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题名: CTAB modification of MCM-49 zeolite containing HMI and its acylation of anisole
作者: Wei, Huijuan1, 2;  Xie, Sujuan1;  Liu, Kefeng1, 3;  Xin, Wenjie1;  Li, Xiujie1;  Liu, Shanhe4;  Gu, Shunming4;  Liu, Shenglin1;  Xu, Longya1
关键词: MCM-49 zeolite ;  Template ;  Post-treatment ;  CTAB ;  Acylation
刊名: CHINESE JOURNAL OF CATALYSIS
发表日期: 2015-10-01
DOI: 10.1016//S1872-2067(15)60887-7
卷: 36, 期:10, 页:1766-1776
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Applied ;  Chemistry, Physical ;  Engineering, Chemical
研究领域[WOS]: Chemistry ;  Engineering
英文摘要: A series of MCM-49 zeolite catalysts containing different amounts of the hexamethyleneimine (HMI) template were calcined at different temperatures, and then modified with cetyltrimethylammonium bromide (CTAB). Changes in structural and acidic properties were investigated by XRD, N-2 adsorption, NH3-TPD, adsorbed pyridine infrared and DRIFTS measurements, and Si-29 and Al-27, MAS NMR. There were cleaning off of amorphous particles and extraframework Al atoms inserted into the framework of the zeolite due to the CTAB modification. These two effects resulted in more framework Al in the CTAB modified samples than the untreated samples, and a higher Bronsted acid concentration, which was confirmed by the acylation of anisole with acetic anhydride. The catalytic roles of the acid sites located in the different pore systems in the zeolite were investigated. It was verified that the active sites after CTAB modification were mainly in the HMI-free regions. (C) 2015, Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by Elsevier B.V. All rights reserved.
关键词[WOS]: LAYER STRUCTURE PRESERVATION ;  MICRO-MESOPOROUS MATERIALS ;  FRIEDEL-CRAFTS ACYLATION ;  DIFFERENT PORE SYSTEMS ;  CATALYTIC PERFORMANCE ;  BETA-ZEOLITE ;  LIQUID ALKYLATION ;  ACETIC-ANHYDRIDE ;  DESILICATION ;  ACID
语种: 英语
WOS记录号: WOS:000362863700016
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/146608
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, Dalian 116023, Liaoning, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.PetroChina Co Ltd, Petrochem Res Inst, Beijing 100029, Peoples R China
4.Anhui Costar Biochem Co Ltd, Dangtu 243100, Anhui, Peoples R China

Recommended Citation:
Wei, Huijuan,Xie, Sujuan,Liu, Kefeng,et al. CTAB modification of MCM-49 zeolite containing HMI and its acylation of anisole[J]. CHINESE JOURNAL OF CATALYSIS,2015,36(10):1766-1776.
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