Journal of Industrial and Engineering Chemistry最新文献_第7页

Tailoring the water vapor adsorption properties by thermal performance analysis of post-synthetically ion-exchanged LTA zeolite derived from Cameroonian kaolin 通过对喀麦隆高岭土合成后离子交换LTA沸石的热性能分析来调整水蒸气吸附性能

IF 5.9 3区工程技术 Q1 CHEMISTRY, MULTIDISCIPLINARY

Journal of Industrial and Engineering Chemistry

Pub Date : 2026-03-25 Epub Date: 2025-08-13 DOI: 10.1016/j.jiec.2025.08.017

Cyrille Ghislain Fotsop, Alexandra Lieb, Franziska Scheffler

LTA Zeolite was synthesized from natural kaolin using a mathematical approach and subsequently ion exchanged. XRF, XRD, FT-IR and Raman spectroscopy, TGA-DSC, solid-state NMR analysis, N₂ sorption, EDX and FE-SEM characterization techniques showed cubic-shaped particles with chamfered-edge crystals related to typical zeolite Na-A morphology with a homogeneous ion-exchange distribution. The water vapor adsorption capacity of synthetic zeolite and post-synthetically ion exchanged zeolite were in the sequence: 4A-Mg > 4A-Ca > 4A-Li > 4A-Na > 4A-K, with a maximum adsorption capacity of 10.41, 9.38, 7.75, 7.20 and 5.53 mmol/g, respectively. The heat of desorption, derived from the TGA analyses, was 947.9, 686.1, 641.0, 617.0 and 584.3 J/g for zeolites exchanged with Mg, Ca, Li, K and Na, respectively. GAB and Langmuir-Sips isothermal models presented better fitting performance with higher R² values in the wide range of relative humidity at 20 °C, 30 °C and 40 °C. Isosteric heat of adsorption (Q_st) was found to increase with increasing adsorption capacity and surface coverage. The Q_st of zeolites exchanged with K, Li, Ca and Mg 44.81, 49.82, 56.83 and 58.71 kJ mol⁻¹ for K, Li, Ca and Mg, respectively, in comparison to zeolite Na 47.24 kJ mol⁻¹. Zeolite 4A-Mg showed stable adsorption capacity over eight consecutive adsorption–desorption cycles. Cameroonian kaolin was found suitable as an ecological and cost-effective material for the production of zeolite A.

以天然高岭土为原料，采用数学方法合成了LTA沸石，并进行了离子交换。XRF、XRD、FT-IR和拉曼光谱、TGA-DSC、固体核磁共振分析、N2吸附、EDX和FE-SEM表征技术表明，颗粒呈立方形状，具有典型的Na-A分子筛的倒角边晶体，离子交换分布均匀。合成沸石和合成后离子交换沸石的水蒸气吸附量顺序为：4A-Mg >； 4A-Ca > 4A-Li > 4A-Na > 4A-K，最大吸附量分别为10.41、9.38、7.75、7.20和5.53 mmol/g。与Mg、Ca、Li、K和Na交换的沸石解吸热分别为947.9、686.1、641.0、617.0和584.3 J/g。GAB和Langmuir-Sips等温模型在20°C、30°C和40°C相对湿度较宽范围内具有较高的R2值，拟合性能较好。等容吸附热（Qst）随吸附容量和表面覆盖率的增加而增加。K、Li、Ca和Mg分子筛的交换Qst分别为44.81、49.82、56.83和58.71 kJ mol−1，Na分子筛的交换Qst为47.24 kJ mol−1。4A-Mg沸石在连续8次吸附-解吸循环中表现出稳定的吸附能力。喀麦隆高岭土是生产A型沸石的一种既环保又经济的原料。

{"title":"Tailoring the water vapor adsorption properties by thermal performance analysis of post-synthetically ion-exchanged LTA zeolite derived from Cameroonian kaolin","authors":"Cyrille Ghislain Fotsop, Alexandra Lieb, Franziska Scheffler","doi":"10.1016/j.jiec.2025.08.017","DOIUrl":"10.1016/j.jiec.2025.08.017","url":null,"abstract":"<div><div>LTA Zeolite was synthesized from natural kaolin using a mathematical approach and subsequently ion exchanged. XRF, XRD, FT-IR and Raman spectroscopy, TGA-DSC, solid-state NMR analysis, N<sub>2</sub> sorption, EDX and FE-SEM characterization techniques showed cubic-shaped particles with chamfered-edge crystals related to typical zeolite Na-A morphology with a homogeneous ion-exchange distribution. The water vapor adsorption capacity of synthetic zeolite and post-synthetically ion exchanged zeolite were in the sequence: 4A-Mg > 4A-Ca > 4A-Li > 4A-Na > 4A-K, with a maximum adsorption capacity of 10.41, 9.38, 7.75, 7.20 and 5.53 mmol/g, respectively. The heat of desorption, derived from the TGA analyses, was 947.9, 686.1, 641.0, 617.0 and 584.3 J/g for zeolites exchanged with Mg, Ca, Li, K and Na, respectively. GAB and Langmuir-Sips isothermal models presented better fitting performance with higher R<sup>2</sup> values in the wide range of relative humidity at 20 °C, 30 °C and 40 °C. Isosteric heat of adsorption (Q<sub>st</sub>) was found to increase with increasing adsorption capacity and surface coverage. The Q<sub>st</sub> of zeolites exchanged with K, Li, Ca and Mg 44.81, 49.82, 56.83 and 58.71 kJ mol<sup>−1</sup> for K, Li, Ca and Mg, respectively, in comparison to zeolite Na 47.24 kJ mol<sup>−1</sup>. Zeolite 4A-Mg showed stable adsorption capacity over eight consecutive adsorption–desorption cycles. Cameroonian kaolin was found suitable as an ecological and cost-effective material for the production of zeolite A.</div></div>","PeriodicalId":363,"journal":{"name":"Journal of Industrial and Engineering Chemistry","volume":"155 ","pages":"Pages 683-698"},"PeriodicalIF":5.9,"publicationDate":"2026-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146147598","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Thermostable xylanase from Chenopodium album: kinetic–thermodynamic profiling and stabilization for industrial saccharification Chenopodium相册中的耐热木聚糖酶：工业糖化的动力学-热力学分析和稳定性

IF 6.1 3区工程技术 Q1 CHEMISTRY, MULTIDISCIPLINARY

Journal of Industrial and Engineering Chemistry

Pub Date : 2026-03-24 DOI: 10.1016/j.jiec.2026.03.025

Khalil ur Rahman, Omar K. Alduaij, Karma M Albalawi, Mohammed Alissa, Abdullah Alghamdi, Suad A. Alghamdi, Ghfren S. Aloraini, Abdulkarim S. Binshaya, Mohamed E. Eissa, Ehab A. Abdelrahman

引用次数: 0

Integral valorization of vine shoots: Production of xylitol, butanol and 2,3-butanediol in a biorefinery context 藤芽的整体增值：木糖醇、丁醇和2,3-丁二醇在生物炼制环境中的生产

IF 6.1 3区工程技术 Q1 CHEMISTRY, MULTIDISCIPLINARY

Journal of Industrial and Engineering Chemistry

Pub Date : 2026-03-24 DOI: 10.1016/j.jiec.2026.03.024

Juan Carlos López-Linares, Juan Miguel Romero-García, Alfonso M. Vidal, Susana Lucas, Mónica Coca, M.Teresa García-Cubero, Inmaculada Romero, Eulogio Castro

引用次数: 0

A high-performance fluorescent deferasirox-functionalized metal-organic framework sensor with spherical morphology and controlled porosity derived from recycled PET for aqueous cadmium sensing 一种高性能荧光去铁氧化铁功能化金属有机框架传感器，具有球形形态和可控孔隙率，源自回收PET，用于水镉传感

IF 5.9 3区工程技术 Q1 CHEMISTRY, MULTIDISCIPLINARY

Journal of Industrial and Engineering Chemistry

Pub Date : 2026-02-25 Epub Date: 2025-07-10 DOI: 10.1016/j.jiec.2025.07.023

Fatemeh Mehdipour , Mostafa Khajeh , Ali Reza Oveisi , Saba Daliran

This work presents the development of a novel fluorescent deferasirox-functionalized metal–organic framework (F-MOF) with spherical morphology and controlled porosity, synthesized through an environmentally conscious approach using polyethylene terephthalate (PET) waste as a precursor. The MOF was functionalized in situ with deferasirox to create a highly sensitive and selective sensor for cadmium detection in aqueous environments. Comprehensive characterization confirmed preserved crystallinity through PXRD analysis, with optimal performance achieved at 0.2 equivalents of drug loading (among tested loadings of 0.2, 0.5, and 1.0 eq). SEM imaging revealed uniform spherical morphology with particle diameters ranging from 50 to 250 nm, while EDS analysis confirmed the expected elemental composition of 56.73 atomic percent carbon and 2.44 atomic percent zirconium. The material showed controlled porosity reduction in BET measurements, with surface area decreasing systematically from 400 to 60 m²/g as drug loading increased. Furthermore, the TGA analysis demonstrated excellent thermal stability with framework integrity maintained up to 360 °C. The material showed notable adsorption capacity (476.2 mg/g) and retained structural stability under environmental conditions. The MOF has a high quantum yield (35.2 %). The sensor revealed excellent selectivity in the presence of competing ions and presented effective performance in real water samples. This effort presents a practical approach to environmental sensing while addressing the critical need for sensitive heavy metal detection in water systems.

这项工作提出了一种新的荧光去铁氧化酶功能化金属有机框架（F-MOF）的发展，具有球形形态和可控孔隙率，通过一种环保的方法合成，利用聚对苯二甲酸乙二醇酯（PET）废物作为前体。用去铁氧化铁原位功能化MOF，创建了一个高灵敏度和选择性的水环境中镉检测传感器。综合表征通过PXRD分析证实了保留的结晶度，在0.2当量载药量（在测试的0.2、0.5和1.0当量载药量中）下达到最佳性能。扫描电镜（SEM）成像结果显示其颗粒直径在50 ~ 250 nm之间，呈均匀的球形，能谱分析证实其元素组成为56.73%的碳和2.44%的锆。在BET测量中，该材料显示出可控的孔隙率降低，随着药物负荷的增加，其表面积从400 m2/g系统地减少到60 m2/g。此外，TGA分析显示了优异的热稳定性，框架完整性保持到360°C。该材料具有显著的吸附能力（476.2 mg/g），并在环境条件下保持了结构稳定性。MOF具有较高的量子产率（35.2%）。该传感器在竞争离子存在下表现出优异的选择性，在实际水样中表现出有效的性能。这项工作提出了一种实用的方法来环境传感，同时解决了水系统中敏感重金属检测的关键需求。

{"title":"A high-performance fluorescent deferasirox-functionalized metal-organic framework sensor with spherical morphology and controlled porosity derived from recycled PET for aqueous cadmium sensing","authors":"Fatemeh Mehdipour , Mostafa Khajeh , Ali Reza Oveisi , Saba Daliran","doi":"10.1016/j.jiec.2025.07.023","DOIUrl":"10.1016/j.jiec.2025.07.023","url":null,"abstract":"<div><div>This work presents the development of a novel fluorescent deferasirox-functionalized metal–organic framework (F-MOF) with spherical morphology and controlled porosity, synthesized through an environmentally conscious approach using polyethylene terephthalate (PET) waste as a precursor. The MOF was functionalized in situ with deferasirox to create a highly sensitive and selective sensor for cadmium detection in aqueous environments. Comprehensive characterization confirmed preserved crystallinity through PXRD analysis, with optimal performance achieved at 0.2 equivalents of drug loading (among tested loadings of 0.2, 0.5, and 1.0 eq). SEM imaging revealed uniform spherical morphology with particle diameters ranging from 50 to 250 nm, while EDS analysis confirmed the expected elemental composition of 56.73 atomic percent carbon and 2.44 atomic percent zirconium. The material showed controlled porosity reduction in BET measurements, with surface area decreasing systematically from 400 to 60 m<sup>2</sup>/g as drug loading increased. Furthermore, the TGA analysis demonstrated excellent thermal stability with framework integrity maintained up to 360 °C. The material showed notable adsorption capacity (476.2 mg/g) and retained structural stability under environmental conditions. The MOF has a high quantum yield (35.2 %). The sensor revealed excellent selectivity in the presence of competing ions and presented effective performance in real water samples. This effort presents a practical approach to environmental sensing while addressing the critical need for sensitive heavy metal detection in water systems.</div></div>","PeriodicalId":363,"journal":{"name":"Journal of Industrial and Engineering Chemistry","volume":"154 ","pages":"Pages 574-582"},"PeriodicalIF":5.9,"publicationDate":"2026-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145924063","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Radiation-resistant and biocompatible hydrogels for noninvasive skin health monitoring and wound healing 抗辐射和生物相容性水凝胶，用于无创皮肤健康监测和伤口愈合

IF 5.9 3区工程技术 Q1 CHEMISTRY, MULTIDISCIPLINARY

Journal of Industrial and Engineering Chemistry

Pub Date : 2026-02-25 Epub Date: 2025-07-08 DOI: 10.1016/j.jiec.2025.07.013

Lei Yan , Qiang Wang , Chengcheng Xia , Wei Hou , Tao Han , Cheng Li , Kunzhi Chen , Kexin Chen , Lihua Dong

The skin is the largest organ of the human body, which can protect the tissues and organs in the body. However, the skin suffers damage and interference because of the effects of radiation, leading to roughness, inflammation and loss of elasticity. Here, a bio-based composite hydrogel with excellent radiation resistance and biocompatibility was successfully constructed by introducing graphene into polyvinyl alcohol. The skin exhibited less damage and no inflammation after 16 days radiation because of the protective effect of the hydrogel. The experimental results showed that the hydrogel could effectively protect cells from radiation damage, increase the cell survival rate by 70 %, and significantly accelerate the wound healing process, with a wound closure rate of 84 % within 16 days. Meanwhile, the graphene-doping PVA hydrogels reduces the number of skin cell death after radiation and promotes growth rates of cells. The hydrogels possess sensitivity and responsivity due to the conductivity, and monitor a variety of movement and electromyographic signals. Therefore, graphene-doping PVA hydrogels provide a convenient way to protect the skin, which are expected to achieve applications in radiation therapy, electronic skin, and wearable devices in the future.

皮肤是人体最大的器官，可以保护体内的组织和器官。然而，由于辐射的影响，皮肤受到损伤和干扰，导致粗糙，炎症和失去弹性。本研究通过在聚乙烯醇中引入石墨烯，成功构建了具有优异耐辐射和生物相容性的生物基复合水凝胶。由于水凝胶的保护作用，16天后皮肤损伤较小，无炎症反应。实验结果表明，水凝胶能有效保护细胞免受辐射损伤，使细胞存活率提高70%，并显著加快创面愈合进程，创面在16天内愈合率达84%。同时，石墨烯掺杂的PVA水凝胶减少了辐射后皮肤细胞的死亡数量，促进了细胞的生长速度。由于水凝胶具有电导率，因此具有灵敏度和响应性，可以监测各种运动和肌电信号。因此，掺杂石墨烯的PVA水凝胶提供了一种方便的皮肤保护方式，未来有望在放射治疗、电子皮肤、可穿戴设备等方面实现应用。

{"title":"Radiation-resistant and biocompatible hydrogels for noninvasive skin health monitoring and wound healing","authors":"Lei Yan , Qiang Wang , Chengcheng Xia , Wei Hou , Tao Han , Cheng Li , Kunzhi Chen , Kexin Chen , Lihua Dong","doi":"10.1016/j.jiec.2025.07.013","DOIUrl":"10.1016/j.jiec.2025.07.013","url":null,"abstract":"<div><div><span>The skin is the largest organ of the human body, which can protect the tissues and organs in the body. However, the skin suffers damage and interference because of the effects of radiation, leading to roughness, inflammation and loss of elasticity. Here, a bio-based composite hydrogel<span><span> with excellent radiation resistance and biocompatibility<span><span><span> was successfully constructed by introducing graphene into polyvinyl alcohol. The skin exhibited less damage and no inflammation after 16 days radiation because of the protective effect of the hydrogel. The experimental results showed that the hydrogel could effectively protect cells from radiation damage, increase the cell </span>survival rate by 70 %, and significantly accelerate the </span>wound healing process, with a wound closure rate of 84 % within 16 days. Meanwhile, the graphene-doping PVA hydrogels reduces the number of skin cell death after radiation and promotes growth rates of cells. The hydrogels possess sensitivity and </span></span>responsivity due to the conductivity, and monitor a variety of movement and electromyographic signals. Therefore, graphene-doping PVA hydrogels provide a convenient way to protect the skin, which are expected to achieve applications in </span></span>radiation therapy<span>, electronic skin, and wearable devices in the future.</span></div></div>","PeriodicalId":363,"journal":{"name":"Journal of Industrial and Engineering Chemistry","volume":"154 ","pages":"Pages 497-505"},"PeriodicalIF":5.9,"publicationDate":"2026-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145924069","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mechanical activation coupled pyrolysis prepares Fe/N-doped macadamia biochar: Dual-function sites enable synergistic Cr(VI) adsorption and reduction 机械活化耦合热解制备Fe/ n掺杂夏威夷果生物炭：双功能位点协同吸附和还原Cr(VI

IF 5.9 3区工程技术 Q1 CHEMISTRY, MULTIDISCIPLINARY

Journal of Industrial and Engineering Chemistry

Pub Date : 2026-02-25 Epub Date: 2025-10-28 DOI: 10.1016/j.jiec.2025.10.053

Jierong Zhou , Yanjin He , Junzheng Wang , Guixiang He , Caiyao Wang , Likui Huang , Yi Zhao , Guifen Feng

Doping impurity elements into biochar is an effective strategy to enhance its capability for removing Cr(VI) from solution. Traditional methods are complex and inefficient. This study developed an mechanical activation enhanced pyrolysis method, using ball-milled macadamia shell@FeCl₃/urea as a precursor, to prepare iron–nitrogen co-doped biochar (Fe-NMBC) for investigating Cr(VI) adsorption. Characterization reveals that the surface of Fe-NMBC exhibits dense needle-shaped structures, with abundant functional groups (C=O/C-O/C-N) and Fe (II)/Fe (III). It boasts a larger specific surface area and higher O/C and N/C ratios compared to the pristine biochar. The results of the adsorption study demonstrate that Fe-NMBC effectively removes Cr(VI) from solution. The adsorption process was found to the pseudo-second-order kinetic model and Langmuir model, with the saturated adsorption capacity(Q_m) is 40.7 mg·g⁻¹. Both monolayer chemical adsorption and diffusion processes are influential in the adsorption process. The adsorption is a spontaneous reaction driven by entropy. The removal mechanism involves the coupled process of adsorption and reduction with surface complexation and reduction reactions serving as the primary driving forces. It can be readily separated from the solution and regenerated for reuse. The impregnation-free pyrolysis method for producing a novel adsorbent demonstrates potential for the removal of Cr(VI) from aqueous environments.

在生物炭中掺入杂质元素是提高其去除溶液中铬（VI）能力的有效策略。传统的方法既复杂又低效。本研究采用机械活化强化热解方法，以球磨澳洲坚果shell@FeCl3/尿素为前驱体，制备铁氮共掺杂生物炭（Fe-NMBC），研究其对Cr（VI）的吸附。表征结果表明，Fe- nmbc表面呈现致密的针状结构，具有丰富的官能团（C=O/C-O/C- n）和Fe (II)/Fe （III）。与原始生物炭相比，它具有更大的比表面积和更高的O/C和N/C比率。吸附研究结果表明，Fe-NMBC能有效去除溶液中的Cr（VI）。吸附过程符合拟二级动力学模型和Langmuir模型，饱和吸附量（Qm）为40.7 mg·g−1。单层化学吸附和扩散过程都对吸附过程有影响。吸附是一个由熵驱动的自发反应。去除机理是吸附和还原的耦合过程，表面络合和还原反应是主要驱动力。它可以很容易地从溶液中分离出来并再生再利用。无浸渍热解制备新型吸附剂的方法显示了从水环境中去除Cr（VI）的潜力。

{"title":"Mechanical activation coupled pyrolysis prepares Fe/N-doped macadamia biochar: Dual-function sites enable synergistic Cr(VI) adsorption and reduction","authors":"Jierong Zhou , Yanjin He , Junzheng Wang , Guixiang He , Caiyao Wang , Likui Huang , Yi Zhao , Guifen Feng","doi":"10.1016/j.jiec.2025.10.053","DOIUrl":"10.1016/j.jiec.2025.10.053","url":null,"abstract":"<div><div>Doping impurity elements into biochar is an effective strategy to enhance its capability for removing Cr(VI) from solution. Traditional methods are complex and inefficient. This study developed an mechanical activation enhanced pyrolysis method, using ball-milled macadamia shell@FeCl<sub>3</sub>/urea as a precursor, to prepare iron–nitrogen co-doped biochar (Fe-NMBC) for investigating Cr(VI) adsorption. Characterization reveals that the surface of Fe-NMBC exhibits dense needle-shaped structures, with abundant functional groups (C=O/C-O/C-N) and Fe (II)/Fe (III). It boasts a larger specific surface area and higher O/C and N/C ratios compared to the pristine biochar. The results of the adsorption study demonstrate that Fe-NMBC effectively removes Cr(VI) from solution. The adsorption process was found to the pseudo-second-order kinetic model and Langmuir model, with the saturated adsorption capacity(<em>Q</em><sub>m</sub>) is 40.7 mg·g<sup>−1</sup>. Both monolayer chemical adsorption and diffusion processes are influential in the adsorption process. The adsorption is a spontaneous reaction driven by entropy. The removal mechanism involves the coupled process of adsorption and reduction with surface complexation and reduction reactions serving as the primary driving forces. It can be readily separated from the solution and regenerated for reuse. The impregnation-free pyrolysis method for producing a novel adsorbent demonstrates potential for the removal of Cr(VI) from aqueous environments.</div></div>","PeriodicalId":363,"journal":{"name":"Journal of Industrial and Engineering Chemistry","volume":"154 ","pages":"Pages 822-834"},"PeriodicalIF":5.9,"publicationDate":"2026-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145924071","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Study on interfacial reaction between Al2O3-C / ZrO2-C submerged entry nozzle and molten steel with La-Ce alloy Al2O3-C / ZrO2-C浸入式入口喷嘴与La-Ce合金钢液界面反应研究

IF 5.9 3区工程技术 Q1 CHEMISTRY, MULTIDISCIPLINARY

Journal of Industrial and Engineering Chemistry

Pub Date : 2026-02-25 Epub Date: 2025-07-12 DOI: 10.1016/j.jiec.2025.07.031

Kaiwang Chen , Dongxue Wang , Lei Yuan , Tianpeng Wen , Qiang Gu , Guoqi Liu , Hongxia Li

The clogging of submerged entry nozzle (SEN) during continuous casting of rare earth steel has consistently been a primary factor affecting steel production and the service life of SEN. Designing refractory materials to prevent SEN clogging and erosion is a critical concern. In this paper, the interfacial reactions between Al₂O₃-C and ZrO₂-C SEN and La-Ce alloy were systematically studied, and the potential application of ZrO₂-C SEN in rare earth steel casting was investigated. Results showed that Al₂O₃-C SEN had a strong chemical reaction with La-Ce alloy, forming the initial clogging. On the contrary, the formation of the dense protective layer at the ZrO₂-C SEN interface hindered the reaction between the alloy and the nozzle, thereby inhibiting clogging. The formation of the protective layer is mainly related to the diffusion and reaction of fine Al₂O₃ particles inside the nozzle to the interface. Furthermore, due to the addition of excessive La-Ce alloy, the clogging formed at the interface was mainly REAlO₃. In actual production, the application of ZrO₂-C SEN can effectively inhibit clogging, improve rare earth yield and process stability.

稀土钢连铸过程中浸入式入口喷嘴的堵塞一直是影响钢铁生产和SEN使用寿命的主要因素，设计耐火材料以防止SEN堵塞和侵蚀是一个关键问题。本文系统地研究了Al2O3-C与ZrO2-C SEN与La-Ce合金的界面反应，并探讨了ZrO2-C SEN在稀土铸钢件中的潜在应用。结果表明：Al2O3-C SEN与La-Ce合金发生强烈的化学反应，形成初始堵塞；相反，在ZrO2-C SEN界面处形成致密的保护层，阻碍了合金与喷嘴之间的反应，从而抑制了堵塞。保护层的形成主要与喷嘴内细小的Al2O3颗粒向界面扩散反应有关。此外，由于过量的La-Ce合金的加入，在界面处形成的堵塞主要是REAlO3。在实际生产中，应用ZrO2-C SEN可以有效地抑制堵塞，提高稀土收率和工艺稳定性。

{"title":"Study on interfacial reaction between Al2O3-C / ZrO2-C submerged entry nozzle and molten steel with La-Ce alloy","authors":"Kaiwang Chen , Dongxue Wang , Lei Yuan , Tianpeng Wen , Qiang Gu , Guoqi Liu , Hongxia Li","doi":"10.1016/j.jiec.2025.07.031","DOIUrl":"10.1016/j.jiec.2025.07.031","url":null,"abstract":"<div><div><span>The clogging of submerged entry nozzle (SEN) during continuous casting<span> of rare earth steel has consistently been a primary factor affecting steel production and the service life of SEN. Designing refractory materials to prevent SEN clogging and erosion is a critical concern. In this paper, the interfacial reactions between Al</span></span><sub>2</sub>O<sub>3</sub>-C and ZrO<sub>2</sub>-C SEN and La-Ce alloy were systematically studied, and the potential application of ZrO<sub>2</sub><span>-C SEN in rare earth steel casting was investigated. Results showed that Al</span><sub>2</sub>O<sub>3</sub>-C SEN had a strong chemical reaction with La-Ce alloy, forming the initial clogging. On the contrary, the formation of the dense protective layer at the ZrO<sub>2</sub>-C SEN interface hindered the reaction between the alloy and the nozzle, thereby inhibiting clogging. The formation of the protective layer is mainly related to the diffusion and reaction of fine Al<sub>2</sub>O<sub>3</sub> particles inside the nozzle to the interface. Furthermore, due to the addition of excessive La-Ce alloy, the clogging formed at the interface was mainly REAlO<sub>3</sub>. In actual production, the application of ZrO<sub>2</sub>-C SEN can effectively inhibit clogging, improve rare earth yield and process stability.</div></div>","PeriodicalId":363,"journal":{"name":"Journal of Industrial and Engineering Chemistry","volume":"154 ","pages":"Pages 668-681"},"PeriodicalIF":5.9,"publicationDate":"2026-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145924149","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

High inhibition efficiency and hydrogen permeation for novel N-heterocycles of SAE 1020 in HCl solution 新型n -杂环sae1020在HCl溶液中具有较高的缓蚀效率和氢渗透性能

IF 5.9 3区工程技术 Q1 CHEMISTRY, MULTIDISCIPLINARY

Journal of Industrial and Engineering Chemistry

Pub Date : 2026-02-25 Epub Date: 2025-07-22 DOI: 10.1016/j.jiec.2025.07.010

Raquel Leal Silvério , Pedro M. Portugal , Rodrigo G. Amorim , Diego Pereira Sangi , Gabriel Rodrigues Antunes , Lilian Weitzel Coelho , Ravindra Pandey , Elivelton Alves Ferreira

To safeguard carbon steel during industrial acid pickling, it is essential to create corrosion and atomic hydrogen embrittlement inhibitors that are effective, non-toxic, and easily produced. Here, we synthesized and investigated the efficacy of 2-(nitromethylene)-1,3-oxazinane (NOX) and 2-(nitromethylene)hexahydropyrimidine (NHE) as corrosion inhibitors for SAE 1020 steel in 1.0 mol L⁻¹ HCl aqueous solutions, within a concentration range of 3.7 mmol L⁻¹ to 4.0 mmol L⁻¹. For both inhibitors were obtained, an efficiency up to 82.7% (91.5%) for NHE (NOX), respectively. The NOX compound exhibited a 42.80% inhibitory efficacy of atomic hydrogen permeation. An anomalous behavior was noted in NOX, depending on its concentrations, leading to efficiency reduction. Theoretical calculations were performed using Density Functional Theory (DFT), where it was demonstrated that NOX is an energetically preferable molecule and has smaller binding energy compared with NHE. Two distinct concentrations of NOX molecules were examined, and at a higher concentration, an oxygen atom is released from the molecule and binds to the Fe surface. This phenomenon does not occur at low concentrations, and is ascribed to the anomalous behavior of the NOX molecule. Our finding paves the way for novel and high-efficiency N-heterocycle inhibitors.

为了在工业酸洗过程中保护碳钢，必须制造有效、无毒且易于生产的腐蚀和原子氢脆抑制剂。本文合成并研究了2-（亚甲基）-1,3-恶嗪烷（NOX）和2-（亚甲基）六氢嘧啶（NHE）在1.0 mol L−1 HCl水溶液中作为SAE 1020钢的缓蚀剂的效果，溶液浓度范围为3.7 ~ 4.0 mmol L−1。两种抑制剂对NHE （NOX）的抑制效率分别高达82.7%（91.5%）。NOX化合物对原子氢渗透的抑制效果为42.80%。在氮氧化物中，根据其浓度，注意到异常行为，导致效率降低。利用密度泛函理论（DFT）进行了理论计算，其中证明了NOX是一种能量更好的分子，与NHE相比具有更小的结合能。研究人员检测了两种不同浓度的氮氧化物分子，在浓度较高的情况下，一个氧原子从分子中释放出来，并与铁表面结合。这种现象不会发生在低浓度，并归因于氮氧化物分子的异常行为。我们的发现为开发新型高效n -杂环抑制剂铺平了道路。

{"title":"High inhibition efficiency and hydrogen permeation for novel N-heterocycles of SAE 1020 in HCl solution","authors":"Raquel Leal Silvério , Pedro M. Portugal , Rodrigo G. Amorim , Diego Pereira Sangi , Gabriel Rodrigues Antunes , Lilian Weitzel Coelho , Ravindra Pandey , Elivelton Alves Ferreira","doi":"10.1016/j.jiec.2025.07.010","DOIUrl":"10.1016/j.jiec.2025.07.010","url":null,"abstract":"<div><div>To safeguard carbon steel during industrial acid pickling, it is essential to create corrosion and atomic hydrogen embrittlement inhibitors that are effective, non-toxic, and easily produced. Here, we synthesized and investigated the efficacy of 2-(nitromethylene)-1,3-oxazinane (NOX) and 2-(nitromethylene)hexahydropyrimidine (NHE) as corrosion inhibitors for SAE 1020 steel in 1.0 mol L<sup>−1</sup> HCl aqueous solutions, within a concentration range of 3.7 mmol L<sup>−1</sup> to 4.0 mmol L<sup>−1</sup>. For both inhibitors were obtained, an efficiency up to 82.7% (91.5%) for NHE (NOX), respectively. The NOX compound exhibited a 42.80% inhibitory efficacy of atomic hydrogen permeation. An anomalous behavior was noted in NOX, depending on its concentrations, leading to efficiency reduction. Theoretical calculations were performed using Density Functional Theory (DFT), where it was demonstrated that NOX is an energetically preferable molecule and has smaller binding energy compared with NHE. Two distinct concentrations of NOX molecules were examined, and at a higher concentration, an oxygen atom is released from the molecule and binds to the Fe surface. This phenomenon does not occur at low concentrations, and is ascribed to the anomalous behavior of the NOX molecule. Our finding paves the way for novel and high-efficiency N-heterocycle inhibitors.</div></div>","PeriodicalId":363,"journal":{"name":"Journal of Industrial and Engineering Chemistry","volume":"154 ","pages":"Pages 473-486"},"PeriodicalIF":5.9,"publicationDate":"2026-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145924233","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Selective oxidation of a lignin model compound using ZnO/TiO2 photocatalysts: A mechanistic study ZnO/TiO2光催化剂选择性氧化木质素模型化合物的机理研究

IF 5.9 3区工程技术 Q1 CHEMISTRY, MULTIDISCIPLINARY

Journal of Industrial and Engineering Chemistry

Pub Date : 2026-02-25 Epub Date: 2025-07-16 DOI: 10.1016/j.jiec.2025.07.036

D. Bhagawan , Nisha Kumari , Ramin R. Farnood , Goutham Rangarajan

Lignin, a complex and recalcitrant polymer composed of phenylpropane units, is a significant by-product in the chemical processing of cellulose and cellulosic ethanol production. Traditional methods for lignin depolymerization, such as thermochemical processes and microbiological treatments, often suffer from low yields, poor selectivity, and high costs. This study explores the photocatalytic degradation of lignin as a promising alternative, leveraging the unique properties of ZnO/TiO₂ nanocatalysts synthesized via a modified sol–gel method. Characterization of the nanocatalysts using XRD, FESEM, FTIR, UV–Vis, DLS, and Zeta Potential confirmed their structural, morphological, and optical properties. The photocatalytic activity was assessed using a lignin model compound, 2-phenoxy-acetophenone, under UV light irradiation (Mercury lamp 350 W). Results indicated that the ZnO/TiO₂ nanocatalysts effectively facilitated the selective oxidation of β-O-4 linkages, resulting in the production of valuable aromatic compounds. The photocatalytic reactions were optimized for various catalyst doses (0.5 g/l, 0.75 g/l and 1.0 g/l), and radical scavenging experiments identified hydroxyl radicals (OH^·) and superoxide radicals (O₂^·-) as the primary reactive oxygen species involved. The conversion rates and product yields were analyzed using UHPLC, revealing significant insights into the mechanistic pathways and intermediate products. This research advances the development of sustainable and economically viable methods for lignin valorisation, enhancing the profitability and sustainability of biorefineries by transforming lignin waste into valuable chemical feedstocks.

木质素是一种由苯丙烷单元组成的复杂难降解聚合物，是纤维素和纤维素乙醇生产化学加工中的重要副产物。传统的木质素解聚方法，如热化学过程和微生物处理，往往存在产率低、选择性差和成本高的问题。本研究利用改性溶胶-凝胶法合成的ZnO/TiO2纳米催化剂的独特性能，探索了光催化降解木质素作为一种有前途的替代方法。利用XRD、FESEM、FTIR、UV-Vis、DLS和Zeta电位对纳米催化剂进行了表征，证实了它们的结构、形态和光学性质。采用木质素模型化合物2-苯氧基-苯乙酮在紫外光（汞灯350w）照射下进行光催化活性评价。结果表明，ZnO/TiO2纳米催化剂能有效促进β-O-4键的选择性氧化，生成有价值的芳香族化合物。在不同催化剂剂量（0.5 g/l、0.75 g/l和1.0 g/l）下对光催化反应进行了优化，自由基清除实验确定羟基自由基（OH·）和超氧自由基（O2·-）是主要参与的活性氧。使用UHPLC分析了转化率和产物收率，揭示了对机理途径和中间产物的重要见解。这项研究促进了可持续和经济上可行的木质素增值方法的发展，通过将木质素废物转化为有价值的化学原料，提高了生物精炼厂的盈利能力和可持续性。

{"title":"Selective oxidation of a lignin model compound using ZnO/TiO2 photocatalysts: A mechanistic study","authors":"D. Bhagawan , Nisha Kumari , Ramin R. Farnood , Goutham Rangarajan","doi":"10.1016/j.jiec.2025.07.036","DOIUrl":"10.1016/j.jiec.2025.07.036","url":null,"abstract":"<div><div>Lignin, a complex and recalcitrant polymer composed of phenylpropane units, is a significant by-product in the chemical processing of cellulose and cellulosic ethanol production. Traditional methods for lignin depolymerization, such as thermochemical processes and microbiological treatments, often suffer from low yields, poor selectivity, and high costs. This study explores the photocatalytic degradation of lignin as a promising alternative, leveraging the unique properties of ZnO/TiO<sub>2</sub> nanocatalysts synthesized via a modified sol–gel method. Characterization of the nanocatalysts using XRD, FESEM, FTIR, UV–Vis, DLS, and Zeta Potential confirmed their structural, morphological, and optical properties. The photocatalytic activity was assessed using a lignin model compound, 2-phenoxy-acetophenone, under UV light irradiation (Mercury lamp 350 W). Results indicated that the ZnO/TiO<sub>2</sub> nanocatalysts effectively facilitated the selective oxidation of β-O-4 linkages, resulting in the production of valuable aromatic compounds. The photocatalytic reactions were optimized for various catalyst doses (0.5 g/l, 0.75 g/l and 1.0 g/l), and radical scavenging experiments identified hydroxyl radicals (OH<sup>·</sup>) and superoxide radicals (O<sub>2</sub><sup>·-</sup>) as the primary reactive oxygen species involved. The conversion rates and product yields were analyzed using UHPLC, revealing significant insights into the mechanistic pathways and intermediate products. This research advances the development of sustainable and economically viable methods for lignin valorisation, enhancing the profitability and sustainability of biorefineries by transforming lignin waste into valuable chemical feedstocks.</div></div>","PeriodicalId":363,"journal":{"name":"Journal of Industrial and Engineering Chemistry","volume":"154 ","pages":"Pages 734-747"},"PeriodicalIF":5.9,"publicationDate":"2026-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145924553","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dual-Function oxygen-vacancy-rich Zn0.98Co0. 02O/GGAC/γ-Al2O3/CeO2/α-MoO3 heterojunction with minimal metal leaching for PMS-Driven 17α-Ethinylestradiol degradation and CO2-to-CH4 conversion 双功能富氧锌0.98 co0。02O/GGAC/γ-Al2O3/CeO2/α-MoO3异质结对pms驱动的17α-炔雌醇降解和CO2-to-CH4转化的最小金属浸出

IF 5.9 3区工程技术 Q1 CHEMISTRY, MULTIDISCIPLINARY

Journal of Industrial and Engineering Chemistry

Pub Date : 2026-02-25 Epub Date: 2025-12-09 DOI: 10.1016/j.jiec.2025.12.007

Umar Farooq , Hadia Noor , Mohammad Ehtisham Khan , Fazlurrahman Khan , Faris Alfifi , Syed Kashif Ali , Gulam Rabbani , Wahid Ali , Abdulrahman Khamaj

The increasing presence of endocrine-disrupting chemicals (EDCs), particularly 17α-ethinylestradiol (EE2), in aquatic systems poses serious environmental and health risks. In this work, a novel Zn_0.98Co_0.02O/γ-Al₂O₃/CeO₂/α-MoO₃ S-scheme heterojunction, modified with guar gum/activated carbon (GGAC), was fabricated for efficient peroxymonosulfate (PMS) activation and photocatalytic CO₂ reduction. Comprehensive characterization (XRD, FTIR, XPS, SEM, TEM, BET, EIS, AFM, DLS, and zeta potential) confirmed successful synthesis, while high-resolution Ce 3d, Co 2p, and Mo 3d spectra verified oxygen-vacancy formation and interfacial charge modulation. Optimization using the RSM-CCD model identified optimal parameters (1.00 g L⁻¹ catalyst, 2.42 mM PMS, pH 7.23, and 10 mg L⁻¹ EE2), achieving 97.81 % degradation within 1 h (k = 0.169 min⁻¹) and 89.28 % efficiency after 8 cycles. The reaction mechanism involved photo-assisted PMS activation, dominated by SO₄^•− and ^•OH radicals. Moreover, the heterojunction exhibited excellent CO₂ photoreduction, achieving a CH₄ production rate of 5837.49 µmol g⁻¹h⁻¹, far exceeding pristine materials. The enhanced activity arises from defect engineering and surface/interface coupling, providing a sustainable route for simultaneous pollutant degradation and carbon valorization, consistent with the surface science and catalytic materials.

越来越多的内分泌干扰化学物质（EDCs），特别是17α-炔雌醇（EE2）在水生系统中存在，构成严重的环境和健康风险。采用瓜尔胶/活性炭（GGAC）改性zn0.98 co0.020 /γ-Al2O3/CeO2/α-MoO3 S-scheme异质结，制备了一种高效的过氧单硫酸盐（PMS）活化光催化CO2还原材料。综合表征（XRD， FTIR， XPS， SEM， TEM， BET， EIS， AFM， DLS和zeta电位）证实了合成成功，而高分辨率Ce 3d， Co 2p和Mo 3d光谱证实了氧空位的形成和界面电荷调制。利用RSM-CCD模型进行优化，确定了最佳参数（1.00 g L−1催化剂，2.42 mM PMS, pH 7.23, 10 mg L−1 EE2）， 1 h内（k = 0.169 min−1）降解率为97.81%，8次循环后效率为89.28%。反应机理为光辅助PMS活化，以SO4•−和•OH自由基为主。此外，该异质结具有优异的CO2光还原性能，CH4产率达到5837.49µmol g−1h−1，远远超过原始材料。增强的活性源于缺陷工程和表面/界面耦合，为同时降解污染物和碳增值提供了可持续的途径，与表面科学和催化材料相一致。

{"title":"Dual-Function oxygen-vacancy-rich Zn0.98Co0. 02O/GGAC/γ-Al2O3/CeO2/α-MoO3 heterojunction with minimal metal leaching for PMS-Driven 17α-Ethinylestradiol degradation and CO2-to-CH4 conversion","authors":"Umar Farooq , Hadia Noor , Mohammad Ehtisham Khan , Fazlurrahman Khan , Faris Alfifi , Syed Kashif Ali , Gulam Rabbani , Wahid Ali , Abdulrahman Khamaj","doi":"10.1016/j.jiec.2025.12.007","DOIUrl":"10.1016/j.jiec.2025.12.007","url":null,"abstract":"<div><div>The increasing presence of endocrine-disrupting chemicals (EDCs), particularly 17α-ethinylestradiol (EE2), in aquatic systems poses serious environmental and health risks. In this work, a novel Zn<sub>0.98</sub>Co<sub>0.02</sub>O/γ-Al<sub>2</sub>O<sub>3</sub>/CeO<sub>2</sub>/α-MoO<sub>3</sub> S-scheme heterojunction, modified with guar gum/activated carbon (GGAC), was fabricated for efficient peroxymonosulfate (PMS) activation and photocatalytic CO<sub>2</sub> reduction. Comprehensive characterization (XRD, FTIR, XPS, SEM, TEM, BET, EIS, AFM, DLS, and zeta potential) confirmed successful synthesis, while high-resolution Ce 3d, Co 2p, and Mo 3d spectra verified oxygen-vacancy formation and interfacial charge modulation. Optimization using the RSM-CCD model identified optimal parameters (1.00 g L<sup>−1</sup> catalyst, 2.42 mM PMS, pH 7.23, and 10 mg L<sup>−1</sup> EE2), achieving 97.81 % degradation within 1 h (k = 0.169 min<sup>−1</sup>) and 89.28 % efficiency after 8 cycles. The reaction mechanism involved photo-assisted PMS activation, dominated by SO<sub>4</sub><sup>•−</sup> and <sup>•</sup>OH radicals. Moreover, the heterojunction exhibited excellent CO<sub>2</sub> photoreduction, achieving a CH<sub>4</sub> production rate of 5837.49 µmol g<sup>−1</sup>h<sup>−1</sup>, far exceeding pristine materials. The enhanced activity arises from defect engineering and surface/interface coupling, providing a sustainable route for simultaneous pollutant degradation and carbon valorization, consistent with the surface science and catalytic materials.</div></div>","PeriodicalId":363,"journal":{"name":"Journal of Industrial and Engineering Chemistry","volume":"154 ","pages":"Pages 835-854"},"PeriodicalIF":5.9,"publicationDate":"2026-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145924559","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0