Journal of the Taiwan Institute of Chemical Engineers最新文献_第5页

Development of iron-modified activated carbon fiber (Fe-ACF) for organic pollutant removal from reverse osmosis concentrate: Modification conditions optimization and adsorption mechanism 反渗透浓缩物中去除有机污染物的铁改性活性炭纤维（Fe-ACF）的研制：改性条件优化及吸附机理

IF 6.3 3区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of the Taiwan Institute of Chemical Engineers

Pub Date : 2025-12-30 DOI: 10.1016/j.jtice.2025.106608

Xiaohan Wei , Chen Wang , Tianyi Zhao , Wenxian Wang , Wenming Song , Lihua Cheng , Shujuan Huang , Xuejun Bi

Background

A reverse osmosis (RO) —mediated water recovery process generates reverse osmosis concentrate (ROC), a hypersaline byproduct containing retained contaminants. The direct discharge of untreated ROC into aquatic environments results in a significant waste of water resources and poses significant environmental risks.

Methods

To address the challenges posed by refractory organic pollutants in ROC, we developed iron-modified activated carbon fiber (Fe-ACF). An L9(3⁴) orthogonal array was designed to identify the best modification conditions. The best modification conditions were identified as 10% by mass Fe(NO₃)₃, 1 h of ultrasonic impregnation, and activation at 750 °C.Among these, high-temperature activation was the dominant factor affecting the adsorption performance of Fe-ACF (p < 0.05).

Significant findings

The Fe-ACF exhibited a 257% increase in mesopore volume and was loaded with 4.93% iron by mass to form Fe₃O₄/Fe₂O₃ composite oxides on its surface. The Fe-ACF achieved a 22.73% reduction in hydrophilic organics (HPI) and a 49.54% removal of humic acid-like fluorophores. The improved adsorption performance can be attributed to three synergistic mechanisms: expansion of mesoporous structures, chemisorption mediated by Fe-O bonds, and π-π electron interactions. The results of this study may provide a novel approach for the adsorption-based removal of various organic pollutants in ROC.

反渗透（RO）介导的水回收过程产生反渗透浓缩物（ROC），这是一种含有残留污染物的高盐副产物。未经处理的中华民国直接排放到水生环境中，造成了严重的水资源浪费，造成了重大的环境风险。方法为了解决中华民国地区难降解有机污染物的挑战，我们开发了铁改性活性炭纤维（Fe-ACF）。设计L9（3⁴）正交阵列以确定最佳修饰条件。确定了最佳改性条件为：质量为10%的Fe（NO₃）₃，超声浸渍1 h， 750℃活化。其中，高温活化是影响Fe-ACF吸附性能的主要因素（p < 0.05）。Fe- acf的介孔体积增加了257%，并且在其表面负载了4.93%的铁，形成了Fe₃O₄/Fe₂O₃复合氧化物。Fe-ACF对亲水性有机物（HPI）的去除率为22.73%，对腐植酸类荧光团的去除率为49.54%。介孔结构的扩张、Fe-O键介导的化学吸附和π-π电子相互作用是提高吸附性能的三个协同机制。本研究结果可能为吸附法去除ROC中各种有机污染物提供一种新的途径。

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引用次数: 0

Melting process inside a fin equipped energy storage filled by non-Newtonian Nano-phase change material 由非牛顿纳米相变材料填充的储能鳍片内的熔化过程

IF 6.3 3区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of the Taiwan Institute of Chemical Engineers

Pub Date : 2025-12-29 DOI: 10.1016/j.jtice.2025.106589

Alireza Kazemi , Mohsen Izadi , Ehsanolah Assareh , Ali Ershadi

Background

Energy storage systems are essential for the management of renewable energy sources. This study investigates enhancement of heat transfer and melting dynamics in a cylindrical porous storage tank fitted with thermal fins. The molten phase-change nanomaterial is modeled as a non-Newtonian fluid using the Carreau constitutive relation.

Methods

The governing equations and boundary conditions are formulated in cylindrical coordinates using the enthalpy–porosity method to represent phase change. The equations are then transferred to their dimensionless form. Finally, they are solved by applying the Finite Element Method.

Findings

Key findings reveal that the inclusion of nanoparticles improves thermal energy transfer, yet reduces melting velocity due to increased viscosity compared to pure kerosene. The local thermal equilibrium condition is maintained between the kerosene-alumina nanofluid and the iron foam. This research offers fresh perspectives on enhancing non-Newtonian phase-change nanomaterials for energy storage systems, contributing to the development of more efficient renewable energy technologies.

储能系统对于可再生能源的管理至关重要。本文研究了加装热翅片的圆柱形多孔储罐的传热和熔化动力学。采用卡罗本构关系将熔融相变纳米材料建模为非牛顿流体。方法采用焓-孔隙度法在柱坐标系下建立相变控制方程和边界条件。然后将方程转换为无量纲形式。最后，应用有限元法对其进行求解。主要发现表明，与纯煤油相比，纳米颗粒的加入改善了热能传递，但由于粘度增加，降低了熔化速度。煤油-氧化铝纳米流体与泡沫铁之间保持局部热平衡状态。该研究为增强非牛顿相变纳米材料用于储能系统提供了新的视角，有助于开发更高效的可再生能源技术。

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引用次数: 0

Solar-driven simultaneous tetracycline degradation and hydrogen peroxide production via concave hollow double-layer polymers 太阳能驱动的同时四环素降解和过氧化氢生产通过凹中空双层聚合物

IF 6.3 3区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of the Taiwan Institute of Chemical Engineers

Pub Date : 2025-12-28 DOI: 10.1016/j.jtice.2025.106606

Wen Jiang, Ying Tian, Xinyu Huang, Xinyi Liao, Jiahui Zhu, Chunyi Li, Rongtai Yu

Background

Tetracycline accumulation in nature poses environmental and health risks. This study develops concave hollow double-layer polymers (CHDPs) via modified self-assembly for solar-driven tetracycline degradation and simultaneously produces hydrogen peroxide.

Methods

CHDPs, synthesized from 3-aminophenol and formaldehyde, contain benzoquinone donor-acceptor moieties. This structure enables photocatalytic hydrogen peroxide generation from water and oxygen, as well as the photocatalytic degradation of tetracycline.

Significant findings

CHDP’s polymer has a narrow bandgap, and a concave architecture that enhances light harvesting/charge transfer, which achieves -1390.5 % tetracycline conversion at 447 nm/12 W/pH 10/1 mg l^-1 via acidic intermediate generation, and simultaneous H₂O₂ production was 110.3 mg g^-1, and the ability to inhibit the self-decomposition of hydrogen peroxide. The operational stability was >80 % efficiency retention after 4 cycles. CHDPs enable cost-effective pollutant degradation while overcoming infrared-dependent limitations of conventional photocatalysts.

背景：四环素在自然界的积累会带来环境和健康风险。本研究通过改进的自组装方法制备了凹中空双层聚合物（chdp），用于太阳能驱动四环素降解，同时产生过氧化氢。方法以3-氨基酚和甲醛为原料合成含有苯醌给受体的schdps。这种结构使光催化过氧化氢从水和氧生成，以及光催化降解四环素。结果表明：schdp聚合物具有窄带隙和凹结构，增强了光收集和电荷转移，在447 nm/12 W/pH条件下，通过酸性中间体生成- 1390.5%的四环素转化率，同时H2O2产量为110.3 mg g-1，并具有抑制过氧化氢自分解的能力。4次循环后，运行稳定性为80%。chdp使污染物降解具有成本效益，同时克服了传统光催化剂依赖红外的局限性。

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引用次数: 0

Synergistic engineering of CoMoP@C hierarchical porous nanostructures for superior alkaline overall water splitting CoMoP@C分级多孔纳米结构的协同工程研究

IF 6.3 3区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of the Taiwan Institute of Chemical Engineers

Pub Date : 2025-12-28 DOI: 10.1016/j.jtice.2025.106596

Sreekanth TVM , Yazan M. Allawi , Mohan Reddy Pallavolu , Samikannu Prabu

Background

The development of cost-effective and high-performance bifunctional electrocatalysts is essential for advancing alkaline water electrolysis technologies.

Methods

In this work, we present a poly-crystalline cobalt-molybdenum phosphate integrated within a conductive carbon matrix (CoMoP@C), synthesized through a simple and cost-effective co-precipitation process, followed by a phosphidation process. Structural analysis confirms the formation of Co₃Mo(PO₄)₂·4H₂O with Co and Mo homogeneously distributed within a sphere-like, porous nanostructure anchored on carbon. This architecture not only provides a large electrochemically active surface area (ECSA) but also facilitates efficient charge transport.

Findings

Electrochemical evaluation in 1.0 M KOH reveals outstanding bifunctional activity: CoMoP@C exhibits low overpotentials of 106 mV for the hydrogen evolution reaction (HER) and 195 mV for the oxygen evolution reaction (OER) at 10 mA cm⁻², along with favorable Tafel slopes and excellent operational durability. When assembled in a two-electrode configuration (CoMoP@C‖CoMoP@C), the system requires a cell voltage of only 1.594 V to operate overall water splitting, matching commercial benchmarks. The enhanced performance is attributed to the synergistic electronic interaction between Mo and Co, and the structural benefits of the phosphate-carbon hybrid, which together promote rapid kinetics and long-term stability. These findings establish CoMoP@C as a highly promising, earth-abundant bifunctional electrocatalyst for efficient water splitting in alkaline media.

开发高性价比、高性能的双功能电催化剂是推进碱水电解技术发展的必要条件。在这项工作中，我们提出了一种集成在导电碳基体内的多晶钴钼磷酸盐（CoMoP@C），通过简单且具有成本效益的共沉淀工艺合成，然后进行磷化工艺。结构分析证实了Co3Mo(PO4)2·4H2O的形成，Co和Mo均匀分布在锚定在碳上的球状多孔纳米结构中。这种结构不仅提供了一个大的电化学活性表面积（ECSA），而且促进了有效的电荷传输。发现：在1.0 M KOH条件下的电化学评价显示出突出的双功能活性：CoMoP@C在10 mA cm - 2条件下，析氢反应（HER）的过电位为106 mV，析氧反应（OER）的过电位为195 mV，具有良好的塔菲尔斜率和良好的操作耐久性。当组装在一个双电极配置（CoMoP@C‖CoMoP@C），该系统只需要1.594 V的电池电压运行整体水分解，符合商业基准。这种增强的性能归因于Mo和Co之间的协同电子相互作用，以及磷酸盐-碳杂化物的结构优势，它们共同促进了快速动力学和长期稳定性。这些发现表明CoMoP@C是一种非常有前途的、地球上丰富的双功能电催化剂，用于在碱性介质中有效地分解水。

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引用次数: 0

Functional group engineering of UiO-66 MOFs: Dual control of morphology and surface chemistry for high-flux, stable oil–water separation membranes UiO-66 mof的官能团工程：高通量稳定油水分离膜的形态和表面化学双重控制

IF 6.3 3区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of the Taiwan Institute of Chemical Engineers

Pub Date : 2025-12-27 DOI: 10.1016/j.jtice.2025.106597

Fatemeh Sahloroud , Mostafa Lashkarbolooki , Majid Peyravi , Mohsen Jahanshahi

Background

Oily wastes produced by developing industries can cause harmful effects on living organisms and the environment. Metal–organic frameworks (MOFs) have emerged as promising candidates for addressing this issue due to their porosity and tunable surface properties, which enable efficient oil–water separation.

Methods

In this study, UiO-66 and its functionalized derivatives (UiO-66.NO₂, and UiO-66.(COOH)₂) were successfully coated onto stainless steel mesh (SSM) surfaces via a solvothermal method. The resulting membranes were systematically characterized for their crystal structure, surface morphology, roughness, wettability, pore characteristics, and stability under harsh conditions using FESEM, EDS, XRD, TGA, and contact angle measurements.

Significant Findings

The introduction of functional groups strongly influenced membrane morphology, hydrophilic/hydrophobic balance, and separation performance. The membranes exhibited superhydrophilicity and underwater superoleophobicity due to the formation of hydrophilic layers within hierarchical structures. The UiO-66.NO₂ membrane (spherical morphology) achieved the highest permeation flux (>130,000 L m⁻² h⁻¹) with a separation efficiency above 98 %, while the UiO-66.(COOH)₂ membrane (irregular morphology) showed superior oil–water separation efficiency. The unmodified UiO-66 (polyhedral morphology) demonstrated intermediate performance. These findings highlight the role of functional groups in tailoring MOF-based membranes for efficient oil–water separation.

发展中的工业产生的垃圾会对生物和环境造成有害影响。金属有机框架（mof）由于其孔隙度和可调的表面特性，可以实现高效的油水分离，因此成为解决这一问题的有希望的候选者。方法本研究将UiO-66及其功能化衍生物（UiO-66）；NO₂和UiO-66。（COOH） 2)通过溶剂热法成功地涂覆在不锈钢网（SSM）表面。通过FESEM、EDS、XRD、TGA和接触角测量，系统地表征了所得膜的晶体结构、表面形貌、粗糙度、润湿性、孔隙特性和恶劣条件下的稳定性。重要发现官能团的引入强烈影响膜形态、亲疏水平衡和分离性能。由于在分层结构中形成亲水层，膜具有超亲水性和水下超疏油性。uio - 66。no2膜（球形形态）达到了最高的渗透通量（>130,000 L m⁻²h⁻¹），分离效率在98%以上。（COOH） 2膜（形态不规则）具有较好的油水分离效果。未修饰的UiO-66（多面体形态）表现出中等的性能。这些发现强调了官能团在定制mof基膜以实现高效油水分离中的作用。

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引用次数: 0

Nanocrystalline copper for thermally efficient Cu-Cu bonding 用于热效率Cu-Cu键合的纳米晶铜

IF 6.3 3区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of the Taiwan Institute of Chemical Engineers

Pub Date : 2025-12-27 DOI: 10.1016/j.jtice.2025.106601

Ankush Kumar , Chih Chen , Nilesh Badwe

Background

Nanocrystalline copper (NC-Cu) is a promising material for submicron via Cu-Cu bonding, where nano-twinned Cu (NT-Cu) cannot be easily deposited. Producing adequate stable NC-Cu requires optimization of plating parameters, Bonding comparisons with highly unstable fine-grained Cu with such NC-Cu are limited, and interface elimination remains challenging.

Methods

FG-Cu (∼150 nm) and NC-Cu (∼85 nm) were prepared via conventional and pulse electroplating, respectively. The effects of additives on bonding quality, thermal stability, and grain growth were examined. Bonding was performed at 200 °C under 20 MPa in vacuum for 1 h, and shear strength was measured.

Significant Findings

Pulse electrodeposition reduced grain size and enhanced bonding. NC-Cu exhibited higher shear strength (50.1 MPa) than FG-Cu (40.0 MPa) due to improved interface elimination.

纳米晶铜（NC-Cu）是一种很有前途的通过Cu-Cu键合制备亚微米级纳米孪晶铜（NT-Cu）的材料。制备足够稳定的NC-Cu需要优化电镀参数，用这种NC-Cu与高度不稳定的细晶Cu进行键合比较是有限的，并且界面消除仍然具有挑战性。方法采用常规电镀法制备sfg - cu (~ 150 nm)，采用脉冲电镀法制备NC-Cu （~ 85 nm）。考察了添加剂对粘接质量、热稳定性和晶粒生长的影响。在200℃、20 MPa、真空条件下粘接1 h，测定抗剪强度。脉冲电沉积减小了晶粒尺寸，增强了键合。NC-Cu的抗剪强度（50.1 MPa）高于FG-Cu （40.0 MPa）。

引用次数: 0

Aspen Simulation and Thermodynamic Analysis for CO2 hydroformylation towards sustainable DMF production 二氧化碳氢甲酰化对可持续生产DMF的模拟和热力学分析

IF 6.3 3区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of the Taiwan Institute of Chemical Engineers

Pub Date : 2025-12-27 DOI: 10.1016/j.jtice.2025.106602

Xiaodi Chen , Shucen Liu , Liping Wang, Xiong Xie, Chuang Chen, Xinpeng Guo, Hongyun Yang

Background

This study compares two pathways for sustainable N, N-dimethylformamide (DMF) production: the homogeneous reaction between CO and dimethyl amine (DMA) catalyzed by sodium methoxide (Process 1) and the heterogeneous reaction between CO₂, H₂, and DMA carried out in a fixed bed reactor (Process 2), assessing their thermodynamic, economic, and environmental performance.

Methods

Thermodynamic equilibrium and yield were calculated with the BWRS equation of state over 100–300 °C and 1–30 atm; Aspen Plus simulated full 100,000 tons per year flowsheets, energy use, carbon tracking and unit-level costing.

Significant Findings

For Process 1, the equilibrium constant and DMF yield decrease with increasing temperature; the thermodynamic optimum occurs at 130 °C, whereas industrial operation at 190 °C and 30 atm delivers the highest yield. In contrast, Process 2 exhibits higher equilibrium constants and DMF yields at lower temperatures and high pressure (150 °C, 30 atm). In addition, Process 2 has demonstrated significantly lower carbon emissions than Process 1, delivering superior environmental merits. Economic analysis further revealed that Process 2 held advantages in equipment investment, raw material costs and utility expenses, and demonstrated overall process economics and sustainability. This approach provided a more promising technical path for heterogenized green production of DMF and other formamides as well.

本研究比较了两种可持续生产N， N-二甲基甲酰胺（DMF）的途径：甲氧基钠催化CO和二甲胺（DMA）的均相反应（过程1）和固定床反应器中CO2、H2和DMA的非均相反应（过程2），评估了它们的热力学、经济和环境性能。方法采用BWRS状态方程计算100-300℃、1-30 atm温度下的热力学平衡和产率；Aspen Plus模拟了整个10万吨/年的流程、能源使用、碳跟踪和单位级成本。工艺1的平衡常数和DMF产率随温度升高而降低；热力学最佳温度为130°C，而工业操作温度为190°C和30 atm时产率最高。相比之下，工艺2在较低温度和高压下（150°C, 30 atm）表现出更高的平衡常数和DMF产率。此外，工艺2的碳排放量明显低于工艺1，具有更好的环保效益。经济分析进一步表明，工艺2在设备投资、原材料成本和公用费用方面具有优势，整体表现出工艺经济性和可持续性。该方法为多相绿色生产DMF和其他甲酰胺提供了一条更有前途的技术途径。

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引用次数: 0

Linker-driven tuning of pore structure and acidity in Zr-MOFs for paraoxon-methyl hydrolysis and efficient oxidative desulfurization 链接器驱动的zr - mof的孔结构和酸度调节对氧氧甲基的水解和高效氧化脱硫

IF 6.3 3区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of the Taiwan Institute of Chemical Engineers

Pub Date : 2025-12-26 DOI: 10.1016/j.jtice.2025.106588

Manh B Nguyen , Le Van Dung , Tan Le Hoang Doan , Pham Tung Son , Sanjit Nayak , Thi Hai Yen Pham , Valeska P. Ting , Huan V. Doan

Background

Zirconium-based metal-organic frameworks are promising candidates for catalytic applications due to their high structural stability, tunable porosity, and acidity. However, the influence of organic linkers on their acid site distribution, pore structure, and catalytic activity, particularly in hydrolysis and oxidative desulfurization reactions, has not been fully explored.

Methods

A series of Zr-MOFs was synthesized using a microwave-assisted solvothermal method at 100 °C for 30 minutes, reducing reaction times by 20–50 times compared to conventional solvothermal approaches. Structural, textural properties, acidity and defect content were characterized using TEM, BET, NH₃-TPD, FTIR-CD₃CN, ESR and XPS. The catalytic activity was evaluated for the hydrolysis of paraoxon-methyl (PM) and the oxidative desulfurization of dibenzothiophene (DBT) under mild conditions. The ODS mechanism of DBT and hydrolysis mechanism of PM are proposed based on the identified degradation products by GC–MS/LC-MC, nuclear magnetic resonance and the role of the Lewis acid sites.

Significant findings

Organic linker variation significantly affected the pore size (0.83–3.68 nm), surface area (1332–1762 m² g^-1), and acid site distribution. Zr-BTC exhibited the highest Lewis acidity (0.311 mmol g^-1) and defect content, achieving complete PM hydrolysis in 2.5 min and 100 % DBT removal within 30 min. Catalytic efficiency strongly correlated with Lewis acid site density modulated by the choice of linker.

锆基金属有机骨架由于其高结构稳定性、可调节的孔隙度和酸度而成为催化应用的有希望的候选者。然而，有机连接剂对其酸位分布、孔结构和催化活性的影响，特别是在水解和氧化脱硫反应中，尚未得到充分的探讨。方法采用微波辅助溶剂热法，在100℃条件下反应30 min，合成一系列zr - mof，反应时间比传统溶剂热法缩短20 ~ 50倍。采用TEM、BET、NH3-TPD、FTIR-CD3CN、ESR和XPS表征了其结构、织构性能、酸度和缺陷含量。在温和条件下考察了对氧磷-甲基（PM）水解和二苯并噻吩（DBT）氧化脱硫的催化活性。基于GC-MS /LC-MC、核磁共振鉴定的降解产物和Lewis酸位点的作用，提出了DBT的ODS机理和PM的水解机理。有机连接剂的变化显著影响了孔隙大小（0.83-3.68 nm）、表面积（1332-1762 m2 g-1）和酸位点分布。Zr-BTC具有最高的Lewis酸度（0.311 mmol g-1）和缺陷含量，在2.5 min内完全水解PM，在30 min内100%去除DBT。催化效率与通过选择连接剂调节的路易斯酸位点密度密切相关。

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引用次数: 0

Preparation process optimization and nanoscale size effects of low-loading Pd/C catalysts for rosin disproportionation 低负载Pd/C松香歧化催化剂的制备工艺优化及纳米尺寸效应

IF 6.3 3区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of the Taiwan Institute of Chemical Engineers

Pub Date : 2025-12-25 DOI: 10.1016/j.jtice.2025.106599

Yifan Niu , Jinhao Zheng , Siyu Gong , Xian Zhou , Shaohua Ju , Xiangguang Bi , Hongbo Peng

Background

Designing cost-effective noble metal catalysts for industrial applications demands precise control over nanoparticles (NPs) size and synthesis protocols. This study focuses on optimizing low-loading (1.00 wt%) Pd/C catalysts for rosin disproportionation (RD), targeting enhanced catalytic efficiency through nanoscale synthesis control.

Methods

Three synthesis strategies (impregnation, hydrosol, and deposition-precipitation) combined with reductants (glycol, hydrazine hydrate, and NaBH₄) were compared to regulate Pd NPs size. The NaBH₄/Pd molar ratio (22.7), temperature (65 °C), and duration (4 h) were systematically optimized via response surface methodology (RSM). Advanced characterization (High-angle annular dark-field scanning transmission electron microscope (HR-TEM), X-ray Diffraction (XRD), specific surface area (SSA), X-ray photoelectron spectroscopy (XPS)) correlated NP size (3.42–6.88 nm) and surface valence states with catalytic performance.

Significant findings

The deposition-precipitation method with NaBH₄ reduction produced relatively small Pd NPs (3.42 nm) with moderate dispersion, achieving a 52.64% dehydroabietic acid (DAA) yield and 0.10% residual abietic acid (AA), meeting LY/T 1357–2008 standards. RSM optimization further increased the DAA yield to 53.54%. A distinct inverse correlation between Pd NP size (3.42–6.88 nm) and DAA productivity highlighted the critical role of nanoscale engineering: Smaller NPs increased accessible surface Pd atoms, accelerating hydrogen transfer kinetics. This work establishes a scalable framework for industrial catalyst design by integrating nanoscale control of Pd NPs with process optimization to minimize precious metal usage while maximizing performance.

为工业应用设计具有成本效益的贵金属催化剂需要精确控制纳米颗粒（NPs）的大小和合成方案。本研究的重点是优化低负荷（1.00 wt%） Pd/C催化剂用于松香歧化（RD），旨在通过纳米级合成控制提高催化效率。方法比较三种合成策略（浸渍、纯溶胶和沉积沉淀）结合还原剂（乙二醇、水合肼和NaBH4）对Pd NPs大小的调节作用。通过响应面法（RSM）对NaBH4/Pd的摩尔比（22.7）、温度（65℃）和持续时间（4 h）进行了系统优化。高级表征（高角度环形暗场扫描透射电子显微镜（HR-TEM）、x射线衍射（XRD）、比表面积（SSA）、x射线光电子能谱（XPS））将NP尺寸（3.42-6.88 nm）和表面价态与催化性能相关联。NaBH4还原沉积-沉淀法制备的Pd NPs尺寸较小（3.42 nm），分散度中等，脱氢枞酸（DAA）收率为52.64%，残留枞酸（AA）为0.10%，符合LY/T 1357-2008标准。RSM优化进一步提高了DAA收率至53.54%。Pd NP尺寸（3.42-6.88 nm）与DAA生产率之间明显的负相关关系突出了纳米工程的关键作用：较小的NP增加了可接近的表面Pd原子，加速了氢转移动力学。这项工作建立了一个可扩展的工业催化剂设计框架，通过将Pd NPs的纳米级控制与工艺优化相结合，以最大限度地减少贵金属的使用，同时最大限度地提高性能。

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引用次数: 0

Synthesis of the new spirocompounds by Tannic acid as a green catalyst and investigation of their antibacterial properties 以单宁酸为绿色催化剂合成新型螺体化合物及其抗菌性能研究

IF 6.3 3区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of the Taiwan Institute of Chemical Engineers

Pub Date : 2025-12-24 DOI: 10.1016/j.jtice.2025.106538

Samira Javadi, Davood Habibi

Background

The use of tannic acid as a green catalyst has a long history and dates back many years.

Methods

The synthesis of various spirocompounds was carried out, following the Grobeck-Blackburn-Benheim and Pictet-Spengler reaction methods, through the four-component condensation reaction of sodium cyanide, isatin, 5-aminothiazolium/2-aminobenzothiazole, and aldehydes under solvent-free conditions and in the presence of tannic acid (TA) as a green and strong catalyst, and they were characterized by different methods.

Significant findings

The desired spirocompounds were prepared in a more environmentally friendly manner with higher yields and shorter reaction times compared to traditional methods, and the antibacterial properties of the two spirocompounds were also evaluated using the Chinese Standard Oscillation Antibacterial Test, which showed significant inhibition against Staphylococcus aureus, Escherichia coli, and Staphylococcus aureus.

单宁酸作为绿色催化剂的使用历史悠久，可以追溯到许多年前。方法采用Grobeck-Blackburn-Benheim反应法和Pictet-Spengler反应法，在无溶剂条件下，以单宁酸（TA）为绿色强催化剂，以氰化钠、isatin、5-氨基噻唑/2-氨基苯并噻唑和醛为原料，进行四组分缩合反应，合成了多种螺体化合物，并采用不同的方法进行表征。与传统方法相比，以更环保的方式制备了所需的螺体化合物，产率更高，反应时间更短，并采用中国标准振荡抗菌试验对两种螺体化合物的抗菌性能进行了评价，结果表明，两种螺体化合物对金黄色葡萄球菌、大肠杆菌和金黄色葡萄球菌均有明显的抑制作用。

引用次数: 0