CAS OpenIR
Mesoscale distribution of adsorbates in ZSM-5 zeolite
Huang, Wen Lai1; Li, Jinghai1; Liu, Zhicheng2; Zhou, Jian2; Ma, Chao1,3; Wen, Li-Xiong3
2019-04-28
Source PublicationCHEMICAL ENGINEERING SCIENCE
ISSN0009-2509
Volume198Pages:253-259
AbstractComplex 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.
KeywordMesoscale structure Heterogeneous catalysis Compromise in competition Steady state Zeolite Channel utilization
DOI10.1016/j.ces.2018.09.050
Language英语
WOS KeywordSPATIOTEMPORAL SELF-ORGANIZATION ; DIFFUSIVITY ; ADLAYER
Funding ProjectNational 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 Research AreaEngineering
WOS SubjectEngineering, Chemical
Funding OrganizationNational 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
WOS IDWOS:000458810700022
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/28011
Collection中国科学院过程工程研究所
Corresponding AuthorHuang, Wen Lai
Affiliation1.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
Recommended Citation
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.
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