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题名: Alkali-treatment of template-containing MCM-22 zeolite and its application in alkylation and transalkylation reactions
作者: Liu, Kefeng1, 2;  Xie, Sujuan1;  Wei, Huijuan1, 2;  Li, Xiujie1;  Liu, Shenglin1;  Xu, Longya1
关键词: MCM-22 zeolite ;  Alkali-treatment ;  Benzene ;  Alkylation ;  Transalkylation
刊名: APPLIED CATALYSIS A-GENERAL
发表日期: 2013-11-05
DOI: 10.1016/j.apcata.2013.09.009
卷: 468, 页:288-295
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Life Sciences & Biomedicine
类目[WOS]: Chemistry, Physical ;  Environmental Sciences
研究领域[WOS]: Chemistry ;  Environmental Sciences & Ecology
英文摘要: The effects of alkali-treatment on the compositions, acidities, texture properties and pore structures of template-containing MCM-22 zeolite were studied by Py-IR, N-2 adsorption-desorption, o-xylene adsorption, XRD and Si-29 NMR. When template-containing MCM-22 zeolite was alkali-treated, desilication mainly occurred in the Al-poor regions, which broke the crystal sheets into smaller ones. The alkali-treatment process under the moderate conditions had little influence on the microporous properties and crystal structures of MCM-22 zeolite, but improved the diffusion conditions for aromatics mainly by reducing the crystal size. With the preserved framework Al species, the alkali-treated template-containing MCM-22 samples had higher ratio of Bronsted to Lewis acid sites, and exhibited improved catalytic performances in alkylation and transalkylation processes. (C) 2013 Elsevier B.V. All rights reserved.
关键词[WOS]: LIQUID-PHASE ALKYLATION ;  MESOPOROSITY DEVELOPMENT ;  ZSM-5 ZEOLITES ;  PORE SYSTEMS ;  CATALYTIC PERFORMANCES ;  MFI ZEOLITES ;  N-BUTANE ;  P-XYLENE ;  DESILICATION ;  BENZENE
语种: 英语
WOS记录号: WOS:000327804200033
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/137501
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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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

Recommended Citation:
Liu, Kefeng,Xie, Sujuan,Wei, Huijuan,et al. Alkali-treatment of template-containing MCM-22 zeolite and its application in alkylation and transalkylation reactions[J]. APPLIED CATALYSIS A-GENERAL,2013,468:288-295.
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