Catalytic role of different pore systems in MCM-49 zeolite for liquid alkylation of benzene with ethylene

	Catalytic role of different pore systems in MCM-49 zeolite for liquid alkylation of benzene with ethylene
	Liu, Kefeng 1,2; Xie, Sujuan 1; Liu, Shenglin 1; Xu, Guoliang 1; Gao, Ningning 1,2; Xu, Longya 1
刊名	journal of catalysis
	2011-10-06
卷号	283 期号:1 页码:68-74
关键词	MCM-49 zeolite Liquid alkylation Benzene Ethylene Pore system
ISSN号	待补充
通讯作者	徐龙伢
产权排序	1,1
中文摘要	catalytic role of different pore systems in mcm-49 zeolite for liquid alkylation of benzene with ethylene
英文摘要	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.
学科主题	物理化学
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
收录类别	SCI
语种	英语
WOS记录号	WOS:000295706400007
公开日期	2012-07-09
内容类型	期刊论文
源URL	[http://159.226.238.44/handle/321008/115346]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
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
推荐引用方式 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,&Xu, Longya.(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.