Mesoscale distribution of adsorbates in ZSM-5 zeolite
文献类型：期刊论文
| 作者 | Huang, Wen Lai1; Li, Jinghai1; Liu, Zhicheng2; Zhou, Jian2; Ma, Chao1,3; Wen, Li-Xiong3 |
| 刊名 | CHEMICAL ENGINEERING SCIENCE
 |
| 出版日期 | 2019-04-28 |
| 卷号 | 198页码:253-259 |
| ISSN号 | 0009-2509 |
| 关键词 | Mesoscale structure Heterogeneous catalysis Compromise in competition Steady state Zeolite Channel utilization |
| DOI | 10.1016/j.ces.2018.09.050 |
| 英文摘要 | Complex distribution of adsorbates can emerge in heterogeneous catalysis due to the compromise among different mechanisms (showing different tendencies of structural evolution) associated with different processes. On two-dimensional catalyst surfaces, all the surfaces are exposed to the gas reservoir (and thus adsorption and desorption processes are accessible to all the surfaces), and we have investigated the effects of adsorption, desorption, diffusion, and reactions on the adlayer structure, and revealed the mechanisms (Huang and Li, 2016). However, in zeolites, only the entrances (or exits) of the pore channels are exposed to the gas reservoir (and thus adsorption and desorption processes are limited there), so the mesoscale behavior might be somewhat different. In this work we explore the influence of adsorption, desorption, diffusion, and reactions on the adsorbate distribution in the ZSM-5 zeolite using kinetic Monte Carlo simulations. Complex distributions of adsorbates (nonlinearly gradient, showing apparent adsorbate shells in some cases) have been revealed, and the channel utilization has been evaluated. The approach and results might be useful to catalyst design, especially determining the optimal thickness of zeolite on a catalyst particle (pellet), since the channel utilization is a measure of effective fraction of the catalyst and is correlated with the practical efficiency of catalysis. (C) 2018 Elsevier Ltd. All rights reserved. |
| WOS关键词 | SPATIOTEMPORAL SELF-ORGANIZATION ; DIFFUSIVITY ; ADLAYER |
| 资助项目 | National Natural Science Foundation of China[91534104] ; National Natural Science Foundation of China[21878300] ; National Natural Science Foundation of China[91434102] ; National Natural Science Foundation of China[91334102] ; State Key Laboratory of Multiphase Complex Systems in China[MPCS-2017-A-02] ; Research Center for Mesoscience at Institute of Process Engineering, Chinese Academy of Sciences[COM2015A002] ; Shanghai Rising-Star Program[18QB1404500] |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| WOS记录号 | WOS:000458810700022 |
| 资助机构 | National Natural Science Foundation of China ; State Key Laboratory of Multiphase Complex Systems in China ; Research Center for Mesoscience at Institute of Process Engineering, Chinese Academy of Sciences ; Shanghai Rising-Star Program |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/28010]  |
| 专题 | 中国科学院过程工程研究所 |
| 通讯作者 | Huang, Wen Lai |
| 作者单位 | 1.Chinese Acad Sci, State Key Lab Multiphase Complex Syst, Inst Proc Engn, POB 353, Beijing 100190, Peoples R China 2.SINOPEC, Shanghai Res Inst Petrochem Technol, Shanghai 201208, Peoples R China 3.Beijing Univ Chem Technol, Coll Chem Engn, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Huang, Wen Lai,Li, Jinghai,Liu, Zhicheng,et al. Mesoscale distribution of adsorbates in ZSM-5 zeolite[J]. CHEMICAL ENGINEERING SCIENCE,2019,198:253-259. |
| APA | Huang, Wen Lai,Li, Jinghai,Liu, Zhicheng,Zhou, Jian,Ma, Chao,&Wen, Li-Xiong.(2019).Mesoscale distribution of adsorbates in ZSM-5 zeolite.CHEMICAL ENGINEERING SCIENCE,198,253-259. |
| MLA | Huang, Wen Lai,et al."Mesoscale distribution of adsorbates in ZSM-5 zeolite".CHEMICAL ENGINEERING SCIENCE 198(2019):253-259. |
入库方式： OAI收割
来源：过程工程研究所
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