Yong Suo, Shan Wang, Run Liu, Muhammad Naeem ul Hassan, Quanwu Guo, Jianhong Luo
Hydrometallurgy was the dominant process for recycling spent lithium‐ion batteries (LIBs). However, problems such as emulsification and attenuation of mass transfer efficiency in traditional solvent extraction have severely restricted its industrial application. Current studies prioritized extractant design over mass transfer enhancement, and unclear mechanisms of micro‐interfacial–hydrodynamic coupling hindered process optimization. To address these challenges, a reciprocating squeezing microchannel extraction system was constructed, establishing a quantitative structure–performance framework that systematically correlated flow field architectures with interfacial mass transfer dynamics and critical microextraction parameters, ultimately achieving synergistic optimization for sustainable recovery of strategic metals (Ni(II), Co(II), Mn(II)). Experimental validation demonstrated that microfluidic field intensification enabled continuous high‐efficiency separation of metal ions, with multidimensional characterization techniques (FTIR, UV–Vis, XPS, SEM‐EDS) fully proving the causal relationship between different influencing factors through both qualitative identification and quantitative analysis. The established micro‐interfacial–hydrodynamic coupling can effectively improve the defects in traditional processes.
{"title":"Efficient separation mechanism of multi‐metal ions under micro‐interface and fluid coupled mass transfer enhancement","authors":"Yong Suo, Shan Wang, Run Liu, Muhammad Naeem ul Hassan, Quanwu Guo, Jianhong Luo","doi":"10.1002/aic.70157","DOIUrl":"https://doi.org/10.1002/aic.70157","url":null,"abstract":"Hydrometallurgy was the dominant process for recycling spent lithium‐ion batteries (LIBs). However, problems such as emulsification and attenuation of mass transfer efficiency in traditional solvent extraction have severely restricted its industrial application. Current studies prioritized extractant design over mass transfer enhancement, and unclear mechanisms of micro‐interfacial–hydrodynamic coupling hindered process optimization. To address these challenges, a reciprocating squeezing microchannel extraction system was constructed, establishing a quantitative structure–performance framework that systematically correlated flow field architectures with interfacial mass transfer dynamics and critical microextraction parameters, ultimately achieving synergistic optimization for sustainable recovery of strategic metals (Ni(II), Co(II), Mn(II)). Experimental validation demonstrated that microfluidic field intensification enabled continuous high‐efficiency separation of metal ions, with multidimensional characterization techniques (FTIR, UV–Vis, XPS, SEM‐EDS) fully proving the causal relationship between different influencing factors through both qualitative identification and quantitative analysis. The established micro‐interfacial–hydrodynamic coupling can effectively improve the defects in traditional processes.","PeriodicalId":120,"journal":{"name":"AIChE Journal","volume":"103 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145610916","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}
Liming Xia, Gang Hou, Bofeng Zhang, Mingrui Xu, Li Wang, Guozhu Liu
Structured catalysts take advantage of high diffusion efficiency and low heat transfer resistance, effectively boosting reactions in non-adiabatic gas–solid processes. However, traditional coating catalysts face problems of weak bond strength. Nanosized zeolites with rich hydroxyl as crystal seeds could effectively improve the binding strength of zeolite coatings, but their poor crystallinity resulted in low growth content. Here, we designed large-size hollow zeolites and anatase as seeds to prepare metal@Silicalite-1 structured catalysts. Hollow zeolites provided abundant nucleation sites and increased the growth content of zeolite by 1.8 times. Meanwhile, the abundant Si-OH and the enriched surface Ti-OH significantly strengthened the adhesion stability of the coatings. In the propane dehydrogenation reaction, the optimized PtZn@S-1-10HT exhibited a high specific activity of 14.1 molC3H6 molPt−1 s−1 with propylene selectivity up to 96.4% at 600°C. This strategy breaks the inherent contradiction between high loading and strong binding ability of coating catalysts, which broadens the avenues for industrial applications.
{"title":"Hollow zeolite seed-directed PtZn@Silicalite-1 structured catalysts boosting propane dehydrogenation","authors":"Liming Xia, Gang Hou, Bofeng Zhang, Mingrui Xu, Li Wang, Guozhu Liu","doi":"10.1002/aic.70169","DOIUrl":"https://doi.org/10.1002/aic.70169","url":null,"abstract":"Structured catalysts take advantage of high diffusion efficiency and low heat transfer resistance, effectively boosting reactions in non-adiabatic gas–solid processes. However, traditional coating catalysts face problems of weak bond strength. Nanosized zeolites with rich hydroxyl as crystal seeds could effectively improve the binding strength of zeolite coatings, but their poor crystallinity resulted in low growth content. Here, we designed large-size hollow zeolites and anatase as seeds to prepare metal@Silicalite-1 structured catalysts. Hollow zeolites provided abundant nucleation sites and increased the growth content of zeolite by 1.8 times. Meanwhile, the abundant Si-OH and the enriched surface Ti-OH significantly strengthened the adhesion stability of the coatings. In the propane dehydrogenation reaction, the optimized PtZn@S-1-10HT exhibited a high specific activity of 14.1 mol<sub>C3H6</sub> mol<sub>Pt</sub><sup>−1</sup> s<sup>−1</sup> with propylene selectivity up to 96.4% at 600°C. This strategy breaks the inherent contradiction between high loading and strong binding ability of coating catalysts, which broadens the avenues for industrial applications.","PeriodicalId":120,"journal":{"name":"AIChE Journal","volume":"124 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145613909","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}
Nanofiltration, the leading technology for desalination and industrial water treatment processes, suffers from low permeability and solute–solute selectivity. Inspired by biological cell membranes, we herein report an effective and scalable construction strategy of highly permselective membranes for organic molecules desalination by incorporating vertically aligned macrocycle supramolecular nanochannels into the interfacial polymerized network. The macrocycle supramolecular nanoarchitecture can significantly improve the membrane permeance as well as molecules-ions selectivity due to its well-defined cavity structure and low tortuosity. The monovalent Cl− ion and water can freely pass through the membrane while divalent SO42− and organic molecules are blocked. Furthermore, unprecedentedly high separation performance of organic molecule desalination is achieved, significantly exceeding the permeance-selectivity upper-bound of the state-of-the-art membranes. Our work offers a facile biomimetic strategy that can be extended to the rational design of a large family of artificial nanochannel membranes as a sustainable technology for resource recovery and separation processes.
{"title":"Bioinspired vertical macrocycle nanoarchitecture membranes for high-efficiency organic molecule desalination","authors":"Tiefan Huang, Xiao Han, Langyu Chen, Dibao Zhu, Ailing Yin, Jianxian Zeng, Hu Zhou, Tonghui Wang, Qing Jiang, Suzana P. Nunes","doi":"10.1002/aic.70160","DOIUrl":"https://doi.org/10.1002/aic.70160","url":null,"abstract":"Nanofiltration, the leading technology for desalination and industrial water treatment processes, suffers from low permeability and solute–solute selectivity. Inspired by biological cell membranes, we herein report an effective and scalable construction strategy of highly permselective membranes for organic molecules desalination by incorporating vertically aligned macrocycle supramolecular nanochannels into the interfacial polymerized network. The macrocycle supramolecular nanoarchitecture can significantly improve the membrane permeance as well as molecules-ions selectivity due to its well-defined cavity structure and low tortuosity. The monovalent Cl<sup>−</sup> ion and water can freely pass through the membrane while divalent SO<sub>4</sub><sup>2−</sup> and organic molecules are blocked. Furthermore, unprecedentedly high separation performance of organic molecule desalination is achieved, significantly exceeding the permeance-selectivity upper-bound of the state-of-the-art membranes. Our work offers a facile biomimetic strategy that can be extended to the rational design of a large family of artificial nanochannel membranes as a sustainable technology for resource recovery and separation processes.","PeriodicalId":120,"journal":{"name":"AIChE Journal","volume":"202 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145613865","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}
Solvents that capture gases through high dissolution affinity often face mass transfer challenges due to strong solvent‐solvent interactions. Successful development of high‐performance solvents requires well‐coordinated intermolecular interactions within solvent‐solute systems. In this study, a new solvent, 1‐(2‐(diethylamino)ethoxy)butan‐2‐amine (DEAEBA), was synthesized for the first time and applied for effective organosulfide capture. Solubility measurements confirm the record absorption capability for methyl mercaptan (MeSH), featuring the lowest Henry's constant and the fastest dissolution rate. Interaction characterization combined with theoretical calculations revealed that the unique molecular structure of DEAEBA enhances its affinity toward MeSH while weakening solvent self‐association. Finally, laboratory‐scale absorption and regeneration experiments demonstrate that DEAEBA possesses promising organosulfide removal performance and excellent regenerability. This study demonstrates a rational molecule design to precisely control complex intermolecular interactions in solvent‐solute systems for efficient capture of pollutants and impurities during environmental management as well as energy and chemical production.
{"title":"Novel solvent giving well‐coordinated interactions in solvent–solute system: Synthesis and methyl mercaptan absorption","authors":"Chuanlei Liu, Qiyue Zhao, Hao Jiang, Yupeng Cui, Benxian Shen, Hui Sun","doi":"10.1002/aic.70173","DOIUrl":"https://doi.org/10.1002/aic.70173","url":null,"abstract":"Solvents that capture gases through high dissolution affinity often face mass transfer challenges due to strong solvent‐solvent interactions. Successful development of high‐performance solvents requires well‐coordinated intermolecular interactions within solvent‐solute systems. In this study, a new solvent, 1‐(2‐(diethylamino)ethoxy)butan‐2‐amine (DEAEBA), was synthesized for the first time and applied for effective organosulfide capture. Solubility measurements confirm the record absorption capability for methyl mercaptan (MeSH), featuring the lowest Henry's constant and the fastest dissolution rate. Interaction characterization combined with theoretical calculations revealed that the unique molecular structure of DEAEBA enhances its affinity toward MeSH while weakening solvent self‐association. Finally, laboratory‐scale absorption and regeneration experiments demonstrate that DEAEBA possesses promising organosulfide removal performance and excellent regenerability. This study demonstrates a rational molecule design to precisely control complex intermolecular interactions in solvent‐solute systems for efficient capture of pollutants and impurities during environmental management as well as energy and chemical production.","PeriodicalId":120,"journal":{"name":"AIChE Journal","volume":"19 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145610917","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}
Weifan Wang, Qinghua Li, Ye Yuan, Fei Shi, Yi Yang, Hanbo Li, Zhi Wang
Facilitated transport membranes (FTMs) using amine carriers show strong potential for CO 2 capture from flue gas. However, their temperature and humidity‐dependent transport mechanisms remain underexplored. Here, polyvinylamine (PVAm) membranes are employed as representative FTMs to investigate CO 2 /N 2 transport via a multiscale approach. Experiments revealed that the saturated water content of PVAm decreased with temperature, while CO 2 permeance showed a non‐monotonic trend. Molecular dynamics and quantum chemical calculations indicated that rising temperature weakened CO 2 /N 2 separation via the solution‐diffusion pathway but enhanced reversible reaction rates and amine regeneration. A modified transport model incorporating water content and hydrogen bond dynamics successfully captured the observed temperature‐dependent behavior. This work deepens the mechanistic understanding of facilitated transport and offers a predictive framework for the rational design of high‐performance amine‐based CO 2 separation membranes under practical conditions.
{"title":"Multiscale modeling of temperature‐induced structural effects on facilitated CO 2 transport","authors":"Weifan Wang, Qinghua Li, Ye Yuan, Fei Shi, Yi Yang, Hanbo Li, Zhi Wang","doi":"10.1002/aic.70166","DOIUrl":"https://doi.org/10.1002/aic.70166","url":null,"abstract":"Facilitated transport membranes (FTMs) using amine carriers show strong potential for CO <jats:sub>2</jats:sub> capture from flue gas. However, their temperature and humidity‐dependent transport mechanisms remain underexplored. Here, polyvinylamine (PVAm) membranes are employed as representative FTMs to investigate CO <jats:sub>2</jats:sub> /N <jats:sub>2</jats:sub> transport via a multiscale approach. Experiments revealed that the saturated water content of PVAm decreased with temperature, while CO <jats:sub>2</jats:sub> permeance showed a non‐monotonic trend. Molecular dynamics and quantum chemical calculations indicated that rising temperature weakened CO <jats:sub>2</jats:sub> /N <jats:sub>2</jats:sub> separation via the solution‐diffusion pathway but enhanced reversible reaction rates and amine regeneration. A modified transport model incorporating water content and hydrogen bond dynamics successfully captured the observed temperature‐dependent behavior. This work deepens the mechanistic understanding of facilitated transport and offers a predictive framework for the rational design of high‐performance amine‐based CO <jats:sub>2</jats:sub> separation membranes under practical conditions.","PeriodicalId":120,"journal":{"name":"AIChE Journal","volume":"118 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145608916","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}
Xuan Wei, Shengjun Du, Yanyang Zheng, Junjie Peng, Guang miao, Xiangjun Meng, Xiangyu Li, Xinxin Li, Jing Xiao
Ultrapure fluoride electronic gases (e.g., C 3 F 8 and C 2 HF 5 ) constitute indispensable cleaning and etching gases in semiconductor manufacturing. However, the presence of structurally analogous impurities like C 3 F 6 and C 2 ClF 5 poses great purification challenges. Herein, we explored resin‐derived carbon granules (C‐PR‐ x ) with fine‐tuned ultramicroporosity for adsorptive separation of C 3 F 6 /C 3 F 8 , C 2 ClF 5 /C 3 F 8 , and C 2 ClF 5 /C 2 HF 5 gas pairs. C‐PR‐850 (5.4 Å) performs C 3 F 6 /C 3 F 8 molecular sieving behavior with a C 3 F 6 uptake of 0.72 mmol g −1 at 0.1 kPa. C‐PR‐900 (5.6 Å) exhibits high C 2 ClF 5 /C 3 F 8 IAST selectivity of 49.9 at ambient conditions. Furthermore, C‐PR‐950 (5.9 Å) achieves preferential C 2 ClF 5 impurity removal during C 2 HF 5 purification with a high capacity of 0.79 mmol g −1 via differential confinement effects. Breakthrough experiments validate excellent purification performance, yielding >99.9999% (6 N) grade C 3 F 8 and C 2 HF 5 . The scalability, mechanical stability, and moisture resistance of C‐PR‐ x make them attractive as industrial adsorbents. This work provides a viable solution for developing scalable industrial carbon granules for effective electronic gas purification.
{"title":"Manipulation of ultramicropore sizes of resin‐derived carbon granules for diverse fluoro‐electronic gas purifications","authors":"Xuan Wei, Shengjun Du, Yanyang Zheng, Junjie Peng, Guang miao, Xiangjun Meng, Xiangyu Li, Xinxin Li, Jing Xiao","doi":"10.1002/aic.70155","DOIUrl":"https://doi.org/10.1002/aic.70155","url":null,"abstract":"Ultrapure fluoride electronic gases (e.g., C <jats:sub>3</jats:sub> F <jats:sub>8</jats:sub> and C <jats:sub>2</jats:sub> HF <jats:sub>5</jats:sub> ) constitute indispensable cleaning and etching gases in semiconductor manufacturing. However, the presence of structurally analogous impurities like C <jats:sub>3</jats:sub> F <jats:sub>6</jats:sub> and C <jats:sub>2</jats:sub> ClF <jats:sub>5</jats:sub> poses great purification challenges. Herein, we explored resin‐derived carbon granules (C‐PR‐ <jats:italic>x</jats:italic> ) with fine‐tuned ultramicroporosity for adsorptive separation of C <jats:sub>3</jats:sub> F <jats:sub>6</jats:sub> /C <jats:sub>3</jats:sub> F <jats:sub>8</jats:sub> , C <jats:sub>2</jats:sub> ClF <jats:sub>5</jats:sub> /C <jats:sub>3</jats:sub> F <jats:sub>8</jats:sub> , and C <jats:sub>2</jats:sub> ClF <jats:sub>5</jats:sub> /C <jats:sub>2</jats:sub> HF <jats:sub>5</jats:sub> gas pairs. C‐PR‐850 (5.4 Å) performs C <jats:sub>3</jats:sub> F <jats:sub>6</jats:sub> /C <jats:sub>3</jats:sub> F <jats:sub>8</jats:sub> molecular sieving behavior with a C <jats:sub>3</jats:sub> F <jats:sub>6</jats:sub> uptake of 0.72 mmol g <jats:sup>−1</jats:sup> at 0.1 kPa. C‐PR‐900 (5.6 Å) exhibits high C <jats:sub>2</jats:sub> ClF <jats:sub>5</jats:sub> /C <jats:sub>3</jats:sub> F <jats:sub>8</jats:sub> IAST selectivity of 49.9 at ambient conditions. Furthermore, C‐PR‐950 (5.9 Å) achieves preferential C <jats:sub>2</jats:sub> ClF <jats:sub>5</jats:sub> impurity removal during C <jats:sub>2</jats:sub> HF <jats:sub>5</jats:sub> purification with a high capacity of 0.79 mmol g <jats:sup>−1</jats:sup> via differential confinement effects. Breakthrough experiments validate excellent purification performance, yielding >99.9999% (6 N) grade C <jats:sub>3</jats:sub> F <jats:sub>8</jats:sub> and C <jats:sub>2</jats:sub> HF <jats:sub>5</jats:sub> . The scalability, mechanical stability, and moisture resistance of C‐PR‐ <jats:italic>x</jats:italic> make them attractive as industrial adsorbents. This work provides a viable solution for developing scalable industrial carbon granules for effective electronic gas purification.","PeriodicalId":120,"journal":{"name":"AIChE Journal","volume":"115 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145598686","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}
Guiming Xie, Rongrong Jin, Fei Yu, Chaonan Cui, Zhang‐Jun Bai, Haijiao Lu, Jeong Young Park, Zhou‐jun Wang
Promoter engineering represents a versatile and effective strategy for enhancing the performance of Cu/ZnO‐based catalysts in CO 2 hydrogenation to methanol, with most studies concentrating on metal‐based promoters. This work introduces silicon carbide (SiC) as a non‐metal promoter to fabricate a series of Cu/ZnO/SiC‐ x catalysts (where x = 9/1, 5/5, and 1/9 denotes the ZnO/SiC mass ratio). Significantly, the Cu/ZnO/SiC‐5/5 catalyst demonstrated superior catalytic performance, achieving a space‐time yield of methanol twofold higher than the conventional Cu/ZnO catalyst at 250°C. Structural characterizations reveal that SiC incorporation increased specific surface area, generated positively charged Cu species (Cu δ + , 0 < δ < 1), enhanced metal‐support interactions, and enriched medium basic sites. Mechanism studies indicate that SiC promotes Cu δ + formation and modulates the interfacial structure, thereby facilitating intermediate conversion. This work develops an efficient SiC‐promoted Cu/ZnO catalyst for CO 2 hydrogenation to methanol and provides mechanistic insights into non‐metal promotional effects in heterogeneous catalysis.
{"title":"SiC ‐promoted Cu/ ZnO catalysts for efficient CO 2 hydrogenation to methanol: Mediating role of Cu δ + species","authors":"Guiming Xie, Rongrong Jin, Fei Yu, Chaonan Cui, Zhang‐Jun Bai, Haijiao Lu, Jeong Young Park, Zhou‐jun Wang","doi":"10.1002/aic.70168","DOIUrl":"https://doi.org/10.1002/aic.70168","url":null,"abstract":"Promoter engineering represents a versatile and effective strategy for enhancing the performance of Cu/ZnO‐based catalysts in CO <jats:sub>2</jats:sub> hydrogenation to methanol, with most studies concentrating on metal‐based promoters. This work introduces silicon carbide (SiC) as a non‐metal promoter to fabricate a series of Cu/ZnO/SiC‐ <jats:italic>x</jats:italic> catalysts (where <jats:italic>x</jats:italic> = 9/1, 5/5, and 1/9 denotes the ZnO/SiC mass ratio). Significantly, the Cu/ZnO/SiC‐5/5 catalyst demonstrated superior catalytic performance, achieving a space‐time yield of methanol twofold higher than the conventional Cu/ZnO catalyst at 250°C. Structural characterizations reveal that SiC incorporation increased specific surface area, generated positively charged Cu species (Cu <jats:sup> <jats:italic>δ</jats:italic> + </jats:sup> , 0 < <jats:italic>δ</jats:italic> < 1), enhanced metal‐support interactions, and enriched medium basic sites. Mechanism studies indicate that SiC promotes Cu <jats:sup> <jats:italic>δ</jats:italic> + </jats:sup> formation and modulates the interfacial structure, thereby facilitating intermediate conversion. This work develops an efficient SiC‐promoted Cu/ZnO catalyst for CO <jats:sub>2</jats:sub> hydrogenation to methanol and provides mechanistic insights into non‐metal promotional effects in heterogeneous catalysis.","PeriodicalId":120,"journal":{"name":"AIChE Journal","volume":"62 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145598688","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}
Li Yin, Guangren Qu, Lu‐Lu Ma, Fu‐An Guo, Shenfang Li, Meiling Li, Qihan Gong, Fangyuan Gai, Hao Wang
Adsorptive separation of propane and propylene represents a promising technology in the chemical industry for propylene purification with low energy consumption. Carbon molecular sieves hold particular promise in light of their high stability, facile regeneration, and low cost. However, fine engineering of the pore size of carbon molecular sieves remains a notable challenge due to their amorphous nature. Here, we report the synthesis of a PAEK‐N polymer, which is used as a precursor for the preparation of PAEK‐N‐derived carbon molecular sieves (PCMSs). We show, through adjusting the carbonization process, that the pore dimensions as well as the gas adsorption performance of these PCMSs can be effectively regulated. Specifically, PCMS‐700, carbonized at 700°C, exhibits a high C 3 H 6 adsorption capacity of 47.4 cm 3 /g at 303 K and 1 bar while fully excludes C 3 H 8 , enabling precise size‐sieving of C 3 H 6 and C 3 H 8 . The separation capability was further validated through dynamic breakthrough experiments.
丙烷和丙烯的吸附分离技术是一种具有较低能耗的丙烷提纯技术。碳分子筛因其高稳定性、易再生和低成本而具有特殊的前景。然而，由于碳分子筛的无定形性质，其孔径的精细工程仍然是一个显着的挑战。在这里，我们报道了一种PAEK - N聚合物的合成，它被用作制备PAEK - N衍生碳分子筛（PCMSs）的前驱体。研究表明，通过调整碳化工艺，可以有效调节PCMSs的孔隙尺寸和气体吸附性能。具体来说，在700°C碳化的PCMS‐700在303 K和1 bar时表现出47.4 cm 3 /g的高c3h6吸附容量，同时完全排除c3h8，从而能够精确筛选c3h6和c3h8。通过动态突破实验进一步验证了其分离能力。
{"title":"Efficient splitting of C 3 H 6 and C 3 H 8 via pore size regulation of carbon molecular sieves","authors":"Li Yin, Guangren Qu, Lu‐Lu Ma, Fu‐An Guo, Shenfang Li, Meiling Li, Qihan Gong, Fangyuan Gai, Hao Wang","doi":"10.1002/aic.70167","DOIUrl":"https://doi.org/10.1002/aic.70167","url":null,"abstract":"Adsorptive separation of propane and propylene represents a promising technology in the chemical industry for propylene purification with low energy consumption. Carbon molecular sieves hold particular promise in light of their high stability, facile regeneration, and low cost. However, fine engineering of the pore size of carbon molecular sieves remains a notable challenge due to their amorphous nature. Here, we report the synthesis of a PAEK‐N polymer, which is used as a precursor for the preparation of PAEK‐N‐derived carbon molecular sieves (PCMSs). We show, through adjusting the carbonization process, that the pore dimensions as well as the gas adsorption performance of these PCMSs can be effectively regulated. Specifically, PCMS‐700, carbonized at 700°C, exhibits a high C <jats:sub>3</jats:sub> H <jats:sub>6</jats:sub> adsorption capacity of 47.4 cm <jats:sup>3</jats:sup> /g at 303 K and 1 bar while fully excludes C <jats:sub>3</jats:sub> H <jats:sub>8</jats:sub> , enabling precise size‐sieving of C <jats:sub>3</jats:sub> H <jats:sub>6</jats:sub> and C <jats:sub>3</jats:sub> H <jats:sub>8</jats:sub> . The separation capability was further validated through dynamic breakthrough experiments.","PeriodicalId":120,"journal":{"name":"AIChE Journal","volume":"18 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145598687","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}
The efficient separation of para‐xylene from its isomers is critical in the chemical industry. Metal–organic framework membranes like MIL‐160 are promising but often exhibit defects due to poor nucleation and uncontrolled crystal growth. To address this, we fabricated a MIL‐160 membrane using a sodium formate‐activated AlOOH nanoflake template. This strategy directed crystal growth along the template surface, ensuring seamless boundary fusion. The formate ions pre‐coordinated with Al nodes on AlOOH, weakening Al–O bonds and facilitating coordination with the 2,5‐furandicarboxylate linker, which was crucial for promoting efficient heterogeneous nucleation. The resulting membrane achieved a para‐xylene permeance of 4.42 × 10 −7 mol m −2 s −1 Pa −1 and a selectivity of 24.2 for an equimolar para‐xylene/ortho‐xylene mixture. This work provides a scalable approach for high‐performance membrane‐based aromatic isomer separation.
{"title":"Synthesis of MIL ‐160 membrane using formate‐activated AlOOH template for efficient xylene isomer separation","authors":"Yuecheng Wang, Yujie Ban, Weishen Yang","doi":"10.1002/aic.70156","DOIUrl":"https://doi.org/10.1002/aic.70156","url":null,"abstract":"The efficient separation of para‐xylene from its isomers is critical in the chemical industry. Metal–organic framework membranes like MIL‐160 are promising but often exhibit defects due to poor nucleation and uncontrolled crystal growth. To address this, we fabricated a MIL‐160 membrane using a sodium formate‐activated AlOOH nanoflake template. This strategy directed crystal growth along the template surface, ensuring seamless boundary fusion. The formate ions pre‐coordinated with Al nodes on AlOOH, weakening Al–O bonds and facilitating coordination with the 2,5‐furandicarboxylate linker, which was crucial for promoting efficient heterogeneous nucleation. The resulting membrane achieved a para‐xylene permeance of 4.42 × 10 <jats:sup>−7</jats:sup> mol m <jats:sup>−2</jats:sup> s <jats:sup>−1</jats:sup> Pa <jats:sup>−1</jats:sup> and a selectivity of 24.2 for an equimolar para‐xylene/ortho‐xylene mixture. This work provides a scalable approach for high‐performance membrane‐based aromatic isomer separation.","PeriodicalId":120,"journal":{"name":"AIChE Journal","volume":"3 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145593893","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}
Unidirectional ejections in binary and ternary liquid–liquid systems within a diffusion cell were linked to diverse molecular motions driven by energy instability (EI). The nature of the ejected streams varied with time. Still, they were similar across different systems, with ejections occurring from the interface's specific portions over extended durations. Some systems exhibited intermittent ejections. One system exhibited interfacial jerking due to the interface's spreading, caused by extremely low interfacial tension. An improved theory of EI was proposed, incorporating the raffinate phase barrier and the viscosities of both the solute and raffinate phases. This theory explains how molecular clusters form mass ejections larger than the molecular diameter by merging molecules having different energies. The theory was also justified by comparing various phenomena across systems. The significance of this work lies in enhancing the understanding of ejection mechanisms and predicting interfacial mass transfer rates, offering valuable insights for various liquid–liquid applications.
{"title":"Observations and explanations of ejection phenomena in liquid–liquid systems due to interfacial instability","authors":"Amalesh Sirkar, Sauradeep Bhattacharjee, Pallab Ghosh","doi":"10.1002/aic.70165","DOIUrl":"https://doi.org/10.1002/aic.70165","url":null,"abstract":"Unidirectional ejections in binary and ternary liquid–liquid systems within a diffusion cell were linked to diverse molecular motions driven by energy instability (EI). The nature of the ejected streams varied with time. Still, they were similar across different systems, with ejections occurring from the interface's specific portions over extended durations. Some systems exhibited intermittent ejections. One system exhibited interfacial jerking due to the interface's spreading, caused by extremely low interfacial tension. An improved theory of EI was proposed, incorporating the raffinate phase barrier and the viscosities of both the solute and raffinate phases. This theory explains how molecular clusters form mass ejections larger than the molecular diameter by merging molecules having different energies. The theory was also justified by comparing various phenomena across systems. The significance of this work lies in enhancing the understanding of ejection mechanisms and predicting interfacial mass transfer rates, offering valuable insights for various liquid–liquid applications.","PeriodicalId":120,"journal":{"name":"AIChE Journal","volume":"1 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145583093","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}
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