AIChE Journal最新文献_第7页

Discharge reactor for fabricating efficient supported metal catalysts at room temperature in the absence of H2

IF 3.7 3区工程技术

AIChE Journal Pub Date : 2024-11-30 DOI: 10.1002/aic.18669

Peng Liu, Xin-Yu Meng, Xujun Wang, Yiyi Zhao, Yu-Long Men, Yun-Xiang Pan

{"title":"Discharge reactor for fabricating efficient supported metal catalysts at room temperature in the absence of H2","authors":"Peng Liu, Xin-Yu Meng, Xujun Wang, Yiyi Zhao, Yu-Long Men, Yun-Xiang Pan","doi":"10.1002/aic.18669","DOIUrl":"https://doi.org/10.1002/aic.18669","url":null,"abstract":"Supported metal catalysts have been widely applied and commonly fabricated through the H2 reduction process. Herein, we develop a H2-free room-temperature discharge-driven reduction (RT-DR) reactor for fabricating supported metal catalysts at room temperature without H2. By RT-DR reactor, a catalyst with pseudo-boehmite (PB) as support (CdS/Pt/PB) is fabricated. In visible-light-driven photocatalytic H2O splitting to H2, CdS/Pt/PB shows a H2 evolution rate of 1132 μmol h−1, which is greatly enhanced than that on catalyst prepared by traditional H2-reduction (633 μmol h−1). RT-DR reactor is also used to prepare a catalyst with low sodium PB (LSPB) as support (CdS/Pt/LSPB). In visible-light-driven photocatalytic H2O splitting to H2, CdS/Pt/LSPB shows a H2 evolution rate of 2554 μmol h−1, which is 2.5 times higher than that on catalyst prepared by traditional H2-reduction (1029 μmol h−1). Thus, RT-DR reactor has high efficiency and universality in preparing catalysts, thus offering a great potential for commercialization.","PeriodicalId":120,"journal":{"name":"AIChE Journal","volume":"74 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2024-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142756269","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 H2 permeability in F-doped BaZr0.7Ce0.2Y0.1O3−δ perovskite membranes via thermodynamic controlled sintering

IF 3.7 3区工程技术

AIChE Journal Pub Date : 2024-11-29 DOI: 10.1002/aic.18670

Zhenbin Gu, Jinkun Tan, Haoli Zhou, Zhengkun Liu, Lin Ge, Guangru Zhang, Wanqin Jin

{"title":"High H2 permeability in F-doped BaZr0.7Ce0.2Y0.1O3−δ perovskite membranes via thermodynamic controlled sintering","authors":"Zhenbin Gu, Jinkun Tan, Haoli Zhou, Zhengkun Liu, Lin Ge, Guangru Zhang, Wanqin Jin","doi":"10.1002/aic.18670","DOIUrl":"https://doi.org/10.1002/aic.18670","url":null,"abstract":"A raw hydrogen mixture frequently results in a reduction in conversion efficiency and the generation of undesired by-products. The application of advanced membrane technology has the potential to offer an economically viable solution for the recovery of hydrogen from such mixtures. BaZr1−x−yCexYyO3−δ is increasingly regarded as an optimal perovskite hydrogen permeable membrane. Nevertheless, the main drawback to its use in a larger scale is the extremely low hydrogen permeability and stability. An original perovskite material is proposed in this study, BaZr0.7Ce0.2Y0.1O3−δ-Fx. A thermodynamic-controlled sintering strategy (TCS) has been employed to inhibit the evaporation of metals from ceramic solids. The TCS directly caused the hydrogen permeation flux to reach 1.07 ml·min−1 cm−2, representing a fourfold improvement. Furthermore, F-doping demonstrated enhanced performance at low and medium temperatures. The aforementioned successful strategy provides an effective path for the tailoring of perovskite materials and promotes its application for the industrial-scale separation of hydrogen.","PeriodicalId":120,"journal":{"name":"AIChE Journal","volume":"1 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2024-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142756388","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

Stabilization of cuσ+ via strong Cu-O-Si interface for efficient electrocatalytic acetylene semi-hydrogenation

IF 3.7 3区工程技术

AIChE Journal Pub Date : 2024-11-27 DOI: 10.1002/aic.18663

Xiaoli Jiang, Wangxin Ge, Yu Fan, Xuedi Sheng, Hongliang Jiang, Chunzhong Li

{"title":"Stabilization of cuσ+ via strong Cu-O-Si interface for efficient electrocatalytic acetylene semi-hydrogenation","authors":"Xiaoli Jiang, Wangxin Ge, Yu Fan, Xuedi Sheng, Hongliang Jiang, Chunzhong Li","doi":"10.1002/aic.18663","DOIUrl":"https://doi.org/10.1002/aic.18663","url":null,"abstract":"The development of a high-performance electrocatalytic acetylene semi-hydrogenation catalyst is the key to the selective removal of acetylene from industrial ethylene gas and non-oil route to ethylene production. However, it is still hampered by the deactivation of the catalyst and hydrogen evolution interference. Here, we proposed an interface engineering strategy involving the Cu and cupric oxide nanoparticles dispersed on amorphous SiO2 (Cu/CuOx/SiO2) by a simple stöber method. x-ray photoelectron spectroscopy demonstrated the strong interfacial interaction between cupric oxide nanoparticles and SiO2. The formed Cu-O-Si interface stabilized the Cuσ+ at high reduction potentials, thus improving the activity and stability of the acetylene reduction reaction, as confirmed by in situ Raman spectroscopy. Consequently, the electrochemical test results showed that at 0.5 M KHCO3, the maximum Faraday efficiency (FE) of ethylene on the optimized Cu/CuOx/SiO2 reached 96%. And ethylene FE remains above 85% at −100 mA cm−2 for 40 h.","PeriodicalId":120,"journal":{"name":"AIChE Journal","volume":"196 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2024-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142742796","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

A highly integrated ceramic membrane-based reactor for intensifying the biomass gasification to clean syngas 基于陶瓷膜的高度集成反应器，用于强化生物质气化以产生清洁合成气

IF 3.7 3区工程技术

AIChE Journal Pub Date : 2024-11-26 DOI: 10.1002/aic.18647

Wei Wei, Qiaoqiao Zhou, Ajing Ding, Shuncheng Li, Feng Zeng, Xuerui Wang, Chong Tian, Zhaoxiang Zhong, Huanhao Chen, Xuehong Gu

{"title":"A highly integrated ceramic membrane-based reactor for intensifying the biomass gasification to clean syngas","authors":"Wei Wei, Qiaoqiao Zhou, Ajing Ding, Shuncheng Li, Feng Zeng, Xuerui Wang, Chong Tian, Zhaoxiang Zhong, Huanhao Chen, Xuehong Gu","doi":"10.1002/aic.18647","DOIUrl":"https://doi.org/10.1002/aic.18647","url":null,"abstract":"Biomass gasification for syngas production is a key operating unit in the biomass utilization process. However, its overall efficiency and stability are often restricted by the presence of complex impurities, including particulate matters (PMs) and tars. In this study, a highly integrated ceramic membrane-based reactor was developed for high-temperature syngas cleaning, enabling the efficient in situ removal of PMs and tars from bio-vapors produced by biomass gasification. Specifically, a silicon carbide (SiC) membrane could separate PMs from biomass volatiles in situ, while a structured Ni15La5/S1-SiC catalyst (nickel and lanthanum-laden silicalite-1 zeolite supported on SiC foam) facilitated the catalytic reforming of tars. Compared to other control reactors (i.e., those containing either a membrane or catalyst alone), the integrated reactor showed synergistic intensification in producing clean syngas from biomass gasification, achieving PM and tar removal efficiencies of up to ~97% and ~90%, and exhibited excellent stability in five-cycle evaluations at 800°C.","PeriodicalId":120,"journal":{"name":"AIChE Journal","volume":"38 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142713043","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

Boosting electrocatalytic alcohol oxidation: Efficient d–π interaction with modified TEMPO and bioinspired structure 促进电催化酒精氧化：改性 TEMPO 与生物启发结构的高效 d-π 相互作用

IF 3.7 3区工程技术

AIChE Journal Pub Date : 2024-11-26 DOI: 10.1002/aic.18662

Ying Chen, Shibin Wang, Zaixiang Xu, Yuhang Wang, Jiahui He, Kai Li, Jieyu Wang, Lihao Liu, Linhan Ren, Suiqin Li, Zhengbin Zhang, Xing Zhong, Jianguo Wang

{"title":"Boosting electrocatalytic alcohol oxidation: Efficient d–π interaction with modified TEMPO and bioinspired structure","authors":"Ying Chen, Shibin Wang, Zaixiang Xu, Yuhang Wang, Jiahui He, Kai Li, Jieyu Wang, Lihao Liu, Linhan Ren, Suiqin Li, Zhengbin Zhang, Xing Zhong, Jianguo Wang","doi":"10.1002/aic.18662","DOIUrl":"https://doi.org/10.1002/aic.18662","url":null,"abstract":"Aminoxyl radicals electrocatalysis presents a sustainable method for oxidizing alcohols into high-value products. Nonetheless, the requirement for high doses of aminoxyl radicals diminishes product purity and economic viability. This study synthesized methylimidazole-functionalized 4-acetylamino-2,2,6,6-tetramethylpiperidine-N-oxyl derivative (MIAcNH-TEMPO) with a strongly electron-withdrawing imidazole group and combined it with bioinspired nickel-supported carbonaceous octopus tentacles for effective electrooxidation of alcohols, achieving high current density of 200 mA cm−2, selectivity of 99%, and turnover frequency of 26,490 h−1. In situ experiments and theoretical calculations indicated that the synergistic effect of Ni-3dxz orbitals on the tentacle surface interacting with the π orbitals of MIAcNH-TEMPO creates a strong d–π interaction, which effectively facilitating the creation of a locally intermediate-enriched microenvironment, decreased the required quantity of aminoxyl radicals. Moreover, the high aqueous solubility of MIAcNH-TEMPO reduces the difficulty of separation process. Scale-up experiments conducted in a continuous flow electrolyzer showcased the potential of this strategy for practical applications.","PeriodicalId":120,"journal":{"name":"AIChE Journal","volume":"38 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142713044","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

Simultaneous optimization of simulated moving bed adsorption and distillation for 2,3-butanediol recovery 同时优化模拟移动床吸附和蒸馏技术以回收 2,3 丁二醇

IF 3.7 3区工程技术

AIChE Journal Pub Date : 2024-11-26 DOI: 10.1002/aic.18642

Marco Avendano, Qiang Fu, Jianpei Lao, Sankar Nair, Matthew J. Realff

引用次数: 0

Doping Si/O to enhance interfacial occupancy of demulsifiers for low-carbon breaking of water-in-heavy oil emulsions

IF 3.7 3区工程技术

AIChE Journal Pub Date : 2024-11-26 DOI: 10.1002/aic.18666

Ying Tian, Changqing He, Xincheng Zhang, Lin He, Zhenghe Xu, Hong Sui, Xingang Li

引用次数: 0

Incorporation of Lewis basic sites into Zn-pyrazolate frameworks for efficient methane/nitrogen separation

IF 3.7 3区工程技术

AIChE Journal Pub Date : 2024-11-26 DOI: 10.1002/aic.18656

Jiaqi Liu, Jiafeng Miao, Lulu Ma, Jinping Li, Jing Li, Hao Wang

引用次数: 0

Dynamic optimization of proton exchange membrane water electrolyzers considering usage-based degradation 质子交换膜水电解槽的动态优化，考虑到基于使用的降解问题

IF 3.5 3区工程技术

AIChE Journal Pub Date : 2024-11-25 DOI: 10.1002/aic.18635

Landon Schofield, Benjamin Paren, Ruaridh Macdonald, Yang Shao-Horn, Dharik Mallapragada

{"title":"Dynamic optimization of proton exchange membrane water electrolyzers considering usage-based degradation","authors":"Landon Schofield, Benjamin Paren, Ruaridh Macdonald, Yang Shao-Horn, Dharik Mallapragada","doi":"10.1002/aic.18635","DOIUrl":"10.1002/aic.18635","url":null,"abstract":"We present a techno-economic optimization model for the design and dynamic operation of proton exchange membrane (PEM) electrolyzers, for enabling cost-effective hydrogen production. This model integrates a 0-D model of the electrolyzer stack, process-wide mass and energy balances, operational constraints, and an empirical relation to characterize degradation as a function of operating current density. Utilizing a decomposition-based solution approach, the model predicts optimal electrolyzer size, operation, and necessary hydrogen storage to satisfy hydrogen demand across various technology and electricity price scenarios. Analysis for 2022 electricity prices and technology costs shows that including use-dependent degradation raises the levelized cost of hydrogen (LCOH) from $4.56/kg to $6.60/kg and increases frequency of stack replacement (2 vs. 7 years). However, by 2030, we anticipate a significant reduction in LCOH to $2.50/kg due to lower capital expenses, leading to longer stack lifetimes and less hydrogen storage. The proposed modeling framework is adaptable to study other electrochemical systems relevant for decarbonization.","PeriodicalId":120,"journal":{"name":"AIChE Journal","volume":"71 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142696708","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

Unlocking electrodialysis efficiency with spacer mesh geometry and material conductivity via finite element analysis 通过有限元分析了解隔板网格几何形状和材料导电性对电渗析效率的影响

IF 3.7 3区工程技术

AIChE Journal Pub Date : 2024-11-25 DOI: 10.1002/aic.18653

Yuyang Yao, Junjie Mu, Yueyue Lu, Edison Huixiang Ang, Jiangnan Shen

引用次数: 0