DICP OpenIR
Subject Area物理化学
Catalytic role of different pore systems in MCM-49 zeolite for liquid alkylation of benzene with ethylene
Liu, Kefeng1,2; Xie, Sujuan1; Liu, Shenglin1; Xu, Guoliang1; Gao, Ningning1,2; Xu, Longya1; Xu LY(徐龙伢)
KeywordMcm-49 Zeolite Liquid Alkylation Benzene Ethylene Pore System
Source PublicationJOURNAL OF CATALYSIS
2011-10-06
ISSN待补充
DOI10.1016/j.jcat.2011.07.004
Volume283Issue:1Pages:68-74
Indexed BySCI
SubtypeArticle
Department8
Funding Project804
Contribution Rank1,1
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
WOS SubjectChemistry, Physical ; Engineering, Chemical
WOS Research AreaChemistry ; Engineering
WOS KeywordM-XYLENE TRANSFORMATION ; N-HEPTANE CRACKING ; H-MCM-22 ZEOLITES ; PHASE ALKYLATION ; EXTERNAL ACIDITY ; HMCM-22 ZEOLITE ; COKE FORMATION ; BETA-ZEOLITES ; ZSM-5 ZEOLITE ; P-XYLENE
AbstractCatalytic role of different pore systems in MCM-49 zeolite for liquid alkylation of benzene with ethylene; The properties of three types of pore systems in MCM-49 zeolite have been investigated by precoking to block the supercages and poisoning the surface pockets. Most Lewis acid sites (ca. 73%) are located within the supercages, while 38% of Bronsted acid sites are located in the surface pockets, 28% in the sinusoidal pores and only 34% in the supercages, respectively. Alkylation of benzene with ethylene mainly occurs in the surface pockets, and the contribution from the sinusoidal pores is limited. The generation of heavy aromatics in supercages results in the deactivation of MCM-49 at the early reaction stage. A moderate alkali-treatment process has been demonstrated to enlarge the opening of supercages without affecting the sinusoidal pores, resulting in improved diffusion of big molecules and hence better catalytic performance for liquid alkylation of benzene with ethylene. (C) 2011 Elsevier Inc. All rights reserved.
Language英语
WOS IDWOS:000295706400007
Citation statistics
Cited Times:34[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/115346
Collection中国科学院大连化学物理研究所
Corresponding AuthorXu LY(徐龙伢)
Affiliation1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Liu, Kefeng,Xie, Sujuan,Liu, Shenglin,et al. Catalytic role of different pore systems in MCM-49 zeolite for liquid alkylation of benzene with ethylene[J]. JOURNAL OF CATALYSIS,2011,283(1):68-74.
APA Liu, Kefeng.,Xie, Sujuan.,Liu, Shenglin.,Xu, Guoliang.,Gao, Ningning.,...&徐龙伢.(2011).Catalytic role of different pore systems in MCM-49 zeolite for liquid alkylation of benzene with ethylene.JOURNAL OF CATALYSIS,283(1),68-74.
MLA Liu, Kefeng,et al."Catalytic role of different pore systems in MCM-49 zeolite for liquid alkylation of benzene with ethylene".JOURNAL OF CATALYSIS 283.1(2011):68-74.
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