Operational uncertainties and disruptions present significant challenges in maintaining the resilience and sustainability of pharmaceutical supply chains. Ensuring efficient operations, minimizing emissions, and enhancing distribution reliability are essential for sustainable supply chain performance. This work examines the challenges posed by uncertainty and disruption in the pharmaceutical supply chain, utilizing stochastic optimization and downside risk to formulate mitigation strategies. Specifically, the study compares the solutions of risk-neutral and risk-averse objectives across three key areas: cost, environmental impact, and service level. Solutions from each approach highlight trade-offs: the risk-neutral solution offers better objective values, while the risk-averse one ensures robustness across scenarios but at a higher cost. The multiobjective analysis demonstrates that considering risk is advantageous, as the benefits of robustness outweigh the associated costs. Overall, the results highlight that risk-averse optimization offers strategic advantages for developing robust and sustainable pharmaceutical supply chains in the face of uncertainty and disruption.
{"title":"Optimization of pharmaceutical supply chains: Navigating disruptions and operational uncertainty utilizing risk measures","authors":"Oluwadare Badejo, Marianthi Ierapetritou","doi":"10.1002/aic.18770","DOIUrl":"https://doi.org/10.1002/aic.18770","url":null,"abstract":"Operational uncertainties and disruptions present significant challenges in maintaining the resilience and sustainability of pharmaceutical supply chains. Ensuring efficient operations, minimizing emissions, and enhancing distribution reliability are essential for sustainable supply chain performance. This work examines the challenges posed by uncertainty and disruption in the pharmaceutical supply chain, utilizing stochastic optimization and downside risk to formulate mitigation strategies. Specifically, the study compares the solutions of risk-neutral and risk-averse objectives across three key areas: cost, environmental impact, and service level. Solutions from each approach highlight trade-offs: the risk-neutral solution offers better objective values, while the risk-averse one ensures robustness across scenarios but at a higher cost. The multiobjective analysis demonstrates that considering risk is advantageous, as the benefits of robustness outweigh the associated costs. Overall, the results highlight that risk-averse optimization offers strategic advantages for developing robust and sustainable pharmaceutical supply chains in the face of uncertainty and disruption.","PeriodicalId":120,"journal":{"name":"AIChE Journal","volume":"13 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143435677","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}
In this article, a generalized optimization framework is proposed for the synthesis of thermally coupled distillation systems within an equation-oriented environment. The proposed framework consists of three components: an efficient superstructure representation, a novel mathematical formulation, and the associated solution algorithm, encompassing a broad range of alternatives. The mathematical model is developed using conditional statements to activate specific sets of equations, effectively addressing existing zero-flow issues. The synthesis problem is formulated as a Mixed Integer Nonlinear Programming problem, which is optimized using our previously developed Feasible Path-Based Branch and Bound method, coupled with an improved Sequential Quadratic Programming algorithm. The computational studies demonstrate that the proposed optimization framework successfully solves complex benchmark problems for separating zeotropic multicomponent mixtures within reasonable computational time with good convergence performance from easily selected starting points. The optimal configuration generated leads to a reduction in total annualized cost ranging from 3.5% to 45%.
{"title":"Generalized optimization framework for synthesis of thermally coupled distillation columns","authors":"Chao Liu, Yingjie Ma, Jie Li","doi":"10.1002/aic.18776","DOIUrl":"https://doi.org/10.1002/aic.18776","url":null,"abstract":"In this article, a generalized optimization framework is proposed for the synthesis of thermally coupled distillation systems within an equation-oriented environment. The proposed framework consists of three components: an efficient superstructure representation, a novel mathematical formulation, and the associated solution algorithm, encompassing a broad range of alternatives. The mathematical model is developed using conditional statements to activate specific sets of equations, effectively addressing existing zero-flow issues. The synthesis problem is formulated as a Mixed Integer Nonlinear Programming problem, which is optimized using our previously developed Feasible Path-Based Branch and Bound method, coupled with an improved Sequential Quadratic Programming algorithm. The computational studies demonstrate that the proposed optimization framework successfully solves complex benchmark problems for separating zeotropic multicomponent mixtures within reasonable computational time with good convergence performance from easily selected starting points. The optimal configuration generated leads to a reduction in total annualized cost ranging from 3.5% to 45%.","PeriodicalId":120,"journal":{"name":"AIChE Journal","volume":"80 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143435679","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}
One of the challenges to using concentrated solar energy (CSE) is the development of innovative fluids or mixtures of fluid and particle systems to efficiently adsorb concentrated solar radiation and transfer heat. In this article, the large-eddy simulation (LES) model and a computational fluid dynamics (CFD) approach were used to simulate CSE absorption by a fluidized bed of silicon carbide (SiC). Drag-forced modification was developed based on the Clark sub-grid model for fluidized beds. The result of our two-dimensional simulation agreed well with Tregambi et al. experimental data. Our simulation showed that the fluidized bed reduced the surface temperature by convective energy transfer, which is only on the surface for the incipiently fluidized bed and in the entire fluidized bed for the bubbling fluidized bed due to the mixing created by bubbles. The lower temperature on the surface significantly decreased the radiative energy loss from the surface to the environment.
{"title":"Modeling and numerical simulation of concentrated solar energy storage using fluidized bed systems","authors":"Zeyuan Gao, Javad Abbasian, Hamid Arastoopour","doi":"10.1002/aic.18730","DOIUrl":"https://doi.org/10.1002/aic.18730","url":null,"abstract":"One of the challenges to using concentrated solar energy (CSE) is the development of innovative fluids or mixtures of fluid and particle systems to efficiently adsorb concentrated solar radiation and transfer heat. In this article, the large-eddy simulation (LES) model and a computational fluid dynamics (CFD) approach were used to simulate CSE absorption by a fluidized bed of silicon carbide (SiC). Drag-forced modification was developed based on the Clark sub-grid model for fluidized beds. The result of our two-dimensional simulation agreed well with Tregambi et al. experimental data. Our simulation showed that the fluidized bed reduced the surface temperature by convective energy transfer, which is only on the surface for the incipiently fluidized bed and in the entire fluidized bed for the bubbling fluidized bed due to the mixing created by bubbles. The lower temperature on the surface significantly decreased the radiative energy loss from the surface to the environment.","PeriodicalId":120,"journal":{"name":"AIChE Journal","volume":"176 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143435781","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}
Xiaolu Yin, Ronghao Liu, Ying Yue, Jun Li, Yanzhao Yang
This study introduces a pioneering application of triiodide ionic liquids (ILs) for the efficient and sustainable recovery of gold (Au) from real-world, various types of electronic wastes. Our method significantly reduces both environmental impact and reagent expenses, while operating under mild conditions. This technique is ideal for practical applications given its ultra-fast leaching (5 min) and room temperature (35°C) reaction conditions, leading to an unprecedented 11-fold enhancement in the reaction kinetics relative to aqua regia. Notably, more than 99.3% of Au from e-waste can be selectively dissolved while excluding non-target elements like Cu. Compared with conventional dissolution-extraction processes, our method facilitates the process into a single step. Additionally, the triiodide ILs can be reused for up to six cycles, and have an impressive economic output–input ratio of 1969%, which demonstrates promising technoeconomic feasibility. This approach provides a valuable strategy for profit-efficient management of e-waste, promoting a circular economy.
{"title":"Ultra-fast and selective recycling of gold from electronic waste based on triiodide ionic liquids","authors":"Xiaolu Yin, Ronghao Liu, Ying Yue, Jun Li, Yanzhao Yang","doi":"10.1002/aic.18773","DOIUrl":"https://doi.org/10.1002/aic.18773","url":null,"abstract":"This study introduces a pioneering application of triiodide ionic liquids (ILs) for the efficient and sustainable recovery of gold (Au) from real-world, various types of electronic wastes. Our method significantly reduces both environmental impact and reagent expenses, while operating under mild conditions. This technique is ideal for practical applications given its ultra-fast leaching (5 min) and room temperature (35°C) reaction conditions, leading to an unprecedented 11-fold enhancement in the reaction kinetics relative to aqua regia. Notably, more than 99.3% of Au from e-waste can be selectively dissolved while excluding non-target elements like Cu. Compared with conventional dissolution-extraction processes, our method facilitates the process into a single step. Additionally, the triiodide ILs can be reused for up to six cycles, and have an impressive economic output–input ratio of 1969%, which demonstrates promising technoeconomic feasibility. This approach provides a valuable strategy for profit-efficient management of e-waste, promoting a circular economy.","PeriodicalId":120,"journal":{"name":"AIChE Journal","volume":"9 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143427402","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}
Weilin Li, Rui Ma, Zheyang Liu, Zhehao Liu, Min Zhou, Baker Rhimi, Qiang Ma, Zhifeng Jiang, Weidong Shi
The insufficient light absorption capacity and severe photogenerated carrier recombination limit the overall efficiency of photocatalysts. Herein, we designed carbon-rich poly(heptazine imide) (PHI) by copolymerization of melamine and 2,4,6-triamine-pyrimidine with KCl/KI. This material has been demonstrated to markedly enhance the utilization rate of photons while simultaneously optimizing the charge efficiency of photogenerated electrons. The carbon-rich PHI showed a higher CO₂ reduction efficiency than the PHI, with a CO generation rate reaching 46.6 μmol g−1 h−1. To overcome the obstacle of slow mass transfer, a flow reactor was designed in-house. The CO yield on carbon-rich PHI in the home-built flow reactor was found to be as high as 153 μmol g−1 h−1, which is 3.3 times that observed in the batch reactor. The findings of the experimental study are in alignment with the results of the theoretical modeling, which was based on the finite volume analysis method.
{"title":"Boosting CO2 photoreduction by creating electron mediator in carbon-enriched poly(heptazine imide)","authors":"Weilin Li, Rui Ma, Zheyang Liu, Zhehao Liu, Min Zhou, Baker Rhimi, Qiang Ma, Zhifeng Jiang, Weidong Shi","doi":"10.1002/aic.18782","DOIUrl":"https://doi.org/10.1002/aic.18782","url":null,"abstract":"The insufficient light absorption capacity and severe photogenerated carrier recombination limit the overall efficiency of photocatalysts. Herein, we designed carbon-rich poly(heptazine imide) (PHI) by copolymerization of melamine and 2,4,6-triamine-pyrimidine with KCl/KI. This material has been demonstrated to markedly enhance the utilization rate of photons while simultaneously optimizing the charge efficiency of photogenerated electrons. The carbon-rich PHI showed a higher CO₂ reduction efficiency than the PHI, with a CO generation rate reaching 46.6 μmol g<sup>−1</sup> h<sup>−1</sup>. To overcome the obstacle of slow mass transfer, a flow reactor was designed in-house. The CO yield on carbon-rich PHI in the home-built flow reactor was found to be as high as 153 μmol g<sup>−1</sup> h<sup>−1</sup>, which is 3.3 times that observed in the batch reactor. The findings of the experimental study are in alignment with the results of the theoretical modeling, which was based on the finite volume analysis method.","PeriodicalId":120,"journal":{"name":"AIChE Journal","volume":"80 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143427351","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 surface effect of certain material such as silicon wafer, quartz or mica on the formation of CO2 hydrate is studied by in situ visual observation of CO2 gas reacting with a water droplet in a restricted space. The results obtained show that the growing process of CO2 hydrate in a restricted space can be divided into two consecutive stages, hydrate covering at gas–liquid interface and hydrate spreading on solid surface. It is indicated that hydrate spreads on solid surface by continuous formation at the advancing frontier, suggesting that water for hydrate formation might be delivered through both lateral and vertical transmitting path, and lateral driving force for water migration might play a dominant role. Qualitative and quantitative analyses show that solid surface properties play a significant role on hydrate spreading process, probably affecting both the interfacial interaction of hydrates with solid surface and water moving process near solid surfaces.
{"title":"Effect of solid surface properties on CO2 hydrate propagation and capillary mechanism","authors":"Shihang Rao, Zhenchao Li, Hailong Lu, Yajun Deng","doi":"10.1002/aic.18753","DOIUrl":"https://doi.org/10.1002/aic.18753","url":null,"abstract":"The surface effect of certain material such as silicon wafer, quartz or mica on the formation of CO<sub>2</sub> hydrate is studied by <i>in situ</i> visual observation of CO<sub>2</sub> gas reacting with a water droplet in a restricted space. The results obtained show that the growing process of CO<sub>2</sub> hydrate in a restricted space can be divided into two consecutive stages, hydrate covering at gas–liquid interface and hydrate spreading on solid surface. It is indicated that hydrate spreads on solid surface by continuous formation at the advancing frontier, suggesting that water for hydrate formation might be delivered through both lateral and vertical transmitting path, and lateral driving force for water migration might play a dominant role. Qualitative and quantitative analyses show that solid surface properties play a significant role on hydrate spreading process, probably affecting both the interfacial interaction of hydrates with solid surface and water moving process near solid surfaces.","PeriodicalId":120,"journal":{"name":"AIChE Journal","volume":"29 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143401680","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}
Photothermal catalytic dry reforming of methane (DRM) provides a sustainable carbon conversion route, but the syngas production rates remain unsatisfactory under low-temperature conditions. This study reported a layered double hydroxide-derived Ni–NiO heterojunction catalyst with optimized electronic environments via Ce doping. The Ce-doped Ni–NiO catalyst exhibited excellent photothermal DRM performance, with H2 and CO production rates of 93.90 and 114.25 mmol g−1 min−1, respectively, and superior 12-h stability. Mechanistic studies revealed that the Ni–NiO heterojunction activated CH4 and CO2 to form CHx* and O* species, while Ce doping promoted the coupling of these intermediates to CH3O*, enhancing syngas generation. This strategy effectively bonded the intermediate species generated from the reactants, thereby enhancing the conversion of CH4 and CO2 into syngas.
{"title":"Photothermal catalytic dry reforming of methane over Ce-promoted Ni/NiO heterostructure","authors":"Yao Xue, Wenjing Dong, Zixian Li, Jing Ren, Zhijia Yang, Yung-Kang Peng, Xianguang Meng, Yufei Zhao","doi":"10.1002/aic.18767","DOIUrl":"https://doi.org/10.1002/aic.18767","url":null,"abstract":"Photothermal catalytic dry reforming of methane (DRM) provides a sustainable carbon conversion route, but the syngas production rates remain unsatisfactory under low-temperature conditions. This study reported a layered double hydroxide-derived Ni–NiO heterojunction catalyst with optimized electronic environments via Ce doping. The Ce-doped Ni–NiO catalyst exhibited excellent photothermal DRM performance, with H<sub>2</sub> and CO production rates of 93.90 and 114.25 mmol g<sup>−1</sup> min<sup>−1</sup>, respectively, and superior 12-h stability. Mechanistic studies revealed that the Ni–NiO heterojunction activated CH<sub>4</sub> and CO<sub>2</sub> to form CH<sub><i>x</i></sub>* and O* species, while Ce doping promoted the coupling of these intermediates to CH<sub>3</sub>O*, enhancing syngas generation. This strategy effectively bonded the intermediate species generated from the reactants, thereby enhancing the conversion of CH<sub>4</sub> and CO<sub>2</sub> into syngas.","PeriodicalId":120,"journal":{"name":"AIChE Journal","volume":"13 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143401681","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}
Ammonia is a carbon‐free energy carrier with 17.6 wt% hydrogen content. The design of an efficient and compact ammonia decomposition reactor based on low‐temperature catalysts is the key to realizing industrial hydrogen production from ammonia. In this work, a multiscale model was developed by bridging the particle‐scale characteristics of catalysts and reactor performances, to fully comprehend the ammonia decomposition process. The effects of catalyst porosity and pore diameters on the reactor size, precious metal loading, and the profile of temperature and heat flux were systematically evaluated. An improved reactor design was further proposed by applying the segmented reactor packed with two‐stage egg‐shell‐type low‐temperature catalysts, which decreased the precious metal usage by 61.6% and the temperature drop by 42.9 K. This segmentation strategy balanced the reaction rate and heat flux, indicating a significant potential in highly efficient, economical, and reliable hydrogen production from ammonia.
{"title":"Multiscale modeling of a low‐temperature NH3 decomposition reactor for precious metal reduction and temperature control","authors":"Lixuan Zhang, Yifan Wu, Wenshi Huang, Li Lin, Luqiang Wang, Zeyun Wu, Huihuang Fang, Dabiao Wang, Chongqi Chen, Yu Luo, Lilong Jiang","doi":"10.1002/aic.18781","DOIUrl":"https://doi.org/10.1002/aic.18781","url":null,"abstract":"Ammonia is a carbon‐free energy carrier with 17.6 wt% hydrogen content. The design of an efficient and compact ammonia decomposition reactor based on low‐temperature catalysts is the key to realizing industrial hydrogen production from ammonia. In this work, a multiscale model was developed by bridging the particle‐scale characteristics of catalysts and reactor performances, to fully comprehend the ammonia decomposition process. The effects of catalyst porosity and pore diameters on the reactor size, precious metal loading, and the profile of temperature and heat flux were systematically evaluated. An improved reactor design was further proposed by applying the segmented reactor packed with two‐stage egg‐shell‐type low‐temperature catalysts, which decreased the precious metal usage by 61.6% and the temperature drop by 42.9 K. This segmentation strategy balanced the reaction rate and heat flux, indicating a significant potential in highly efficient, economical, and reliable hydrogen production from ammonia.","PeriodicalId":120,"journal":{"name":"AIChE Journal","volume":"18 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143401403","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}
Here, the effect of ionic liquid (IL) on the kinetics of CO2 desorption in amine solutions was investigated. N-(2-aminoethyl) ethanolamine (AEEA) and N,N-diethylethanolamine (DEEA) were used as representatives of primary/secondary and tertiary amines. Results indicated that IL had a promoting effect on AEEA, but not on DEEA. The initial desorption rate of AEEA can be improved by up to 36.4%. Kinetics for IL-activated AEEA was developed through a modified Arrhenius equation, and the activation energy was 38.48 kJ/mol, which was 10.7% lower than that of AEEA. The species distribution was monitored by 13C NMR, which showed that the IL was not directly involved in the reaction, but might activate desorption through hydrogen bonding. Furthermore, theoretical calculations revealed that the IL can form hydrogen bonding with carbamate during the desorption of primary/secondary amines to lower the energy barrier for the zwitterion formation reaction, while only weaker hydrogen bonding was formed during the desorption of tertiary amines.
{"title":"The effect of ionic liquid [Bmim][BF4] on the kinetics of CO2 desorption in amine solutions","authors":"Rui-Qi Jia, Zhi-Yuan Xue, Shuang Liang, Guang-Wen Chu, Liang-Liang Zhang, Jian-Feng Chen","doi":"10.1002/aic.18780","DOIUrl":"https://doi.org/10.1002/aic.18780","url":null,"abstract":"Here, the effect of ionic liquid (IL) on the kinetics of CO<sub>2</sub> desorption in amine solutions was investigated. N-(2-aminoethyl) ethanolamine (AEEA) and N,N-diethylethanolamine (DEEA) were used as representatives of primary/secondary and tertiary amines. Results indicated that IL had a promoting effect on AEEA, but not on DEEA. The initial desorption rate of AEEA can be improved by up to 36.4%. Kinetics for IL-activated AEEA was developed through a modified Arrhenius equation, and the activation energy was 38.48 kJ/mol, which was 10.7% lower than that of AEEA. The species distribution was monitored by <sup>13</sup>C NMR, which showed that the IL was not directly involved in the reaction, but might activate desorption through hydrogen bonding. Furthermore, theoretical calculations revealed that the IL can form hydrogen bonding with carbamate during the desorption of primary/secondary amines to lower the energy barrier for the zwitterion formation reaction, while only weaker hydrogen bonding was formed during the desorption of tertiary amines.","PeriodicalId":120,"journal":{"name":"AIChE Journal","volume":"57 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143385838","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}
Achieving seamless integration between polymer-filler remains a significant challenge in gas separation mixed matrix membranes (MMMs), particularly with glassy polymers of intrinsic microporosity (PIMs). Here, we report a homointerface strategy for fabricating high-performance MMMs by the modulated synthesis of zeolitic imidazolate framework ZIF-8 fillers with amidoxime-modified polymer of intrinsic microporosity (AOPIM-1) oligomers, followed by being encapsulated within the long-chain AOPIM-1 polymer matrix. These AOPIM-1 oligomers serve a dual role: precisely modulating the crystal growth of ZIF-8 and establishing intimate homointerfaces between polymer-filler due to their intervening linker function. This strategy ensures excellent filler dispersion while preserving their interconnected network structure within MMMs, offering abundant percolating nanochannels. The resulting MMMs exhibited remarkably enhanced C3H6/C3H8 separation performance, with optimal combinations of C3H6 permeability (184.5–267.6 Barrer) and C3H6/C3H8 selectivity (23.9–28.9) outperforming state-of-the-art metal–organic frameworks (MOF)-based MMMs. This strategy presents an alternative strategy for the design of efficient MOFs/PIMs MMMs in the separation of challenging gas mixtures.
{"title":"Engineering homointerface-mediated mixed matrix membrane for propylene/propane separation","authors":"Xinpu Niu, Zongkai Liu, Haofan Zhao, Jing Wang, Guanying Dong, Yatao Zhang","doi":"10.1002/aic.18768","DOIUrl":"https://doi.org/10.1002/aic.18768","url":null,"abstract":"Achieving seamless integration between polymer-filler remains a significant challenge in gas separation mixed matrix membranes (MMMs), particularly with glassy polymers of intrinsic microporosity (PIMs). Here, we report a homointerface strategy for fabricating high-performance MMMs by the modulated synthesis of zeolitic imidazolate framework ZIF-8 fillers with amidoxime-modified polymer of intrinsic microporosity (AOPIM-1) oligomers, followed by being encapsulated within the long-chain AOPIM-1 polymer matrix. These AOPIM-1 oligomers serve a dual role: precisely modulating the crystal growth of ZIF-8 and establishing intimate homointerfaces between polymer-filler due to their intervening linker function. This strategy ensures excellent filler dispersion while preserving their interconnected network structure within MMMs, offering abundant percolating nanochannels. The resulting MMMs exhibited remarkably enhanced C<sub>3</sub>H<sub>6</sub>/C<sub>3</sub>H<sub>8</sub> separation performance, with optimal combinations of C<sub>3</sub>H<sub>6</sub> permeability (184.5–267.6 Barrer) and C<sub>3</sub>H<sub>6</sub>/C<sub>3</sub>H<sub>8</sub> selectivity (23.9–28.9) outperforming state-of-the-art metal–organic frameworks (MOF)-based MMMs. This strategy presents an alternative strategy for the design of efficient MOFs/PIMs MMMs in the separation of challenging gas mixtures.","PeriodicalId":120,"journal":{"name":"AIChE Journal","volume":"208 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143385841","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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