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学科主题物理化学
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)
关键词Mcm-49 Zeolite Liquid Alkylation Benzene Ethylene Pore System
刊名JOURNAL OF CATALYSIS
2011-10-06
ISSN待补充
DOI10.1016/j.jcat.2011.07.004
283期:1页:68-74
收录类别SCI
文章类型Article
部门归属8
项目归属804
产权排名1,1
WOS标题词Science & Technology ; Physical Sciences ; Technology
类目[WOS]Chemistry, Physical ; Engineering, Chemical
研究领域[WOS]Chemistry ; Engineering
关键词[WOS]M-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
英文摘要Catalytic 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.
语种英语
WOS记录号WOS:000295706400007
引用统计
被引频次:31[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/115346
专题中国科学院大连化学物理研究所
通讯作者Xu LY(徐龙伢)
作者单位1.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
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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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