Direct observation of olefin homologations on zeolite ZSM-22 and its implications to methanol to olefin conversion

被引：85
作者：
Cui, Zhi-Min [1 ,2 ,3 ]
Liu, Qiang [1 ,2 ,3 ]
Ma, Zhuo [1 ,2 ,3 ]
Bian, Shao-Wei [1 ,2 ,3 ]
Song, Wei-Guo [1 ,2 ]
机构：
[1] Chinese Acad Sci, Inst Chem, Key Lab Mol Nanostruct & Nanotechnol, Beijing 100190, Peoples R China
[2] Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China
[3] Chinese Acad Sci, Grad Sch, Beijing 100190, Peoples R China
来源：
JOURNAL OF CATALYSIS | 2008年 / 258卷 / 01期
基金：
中国国家自然科学基金;
关键词：
ZSM-22; homologation; methanol to olefin; zeolite;
D O I：
10.1016/j.jcat.2008.05.029
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
In this paper, we studied olefin homologation reactions on zeolite ZSM-22, whose one dimensional pore structure inhibited the hydrocarbon pool mechanism and secondary reactions of the methanol to olefin (MTO) conversion. Homologation of ethylene, propylene and styrene were directly observed between C-13 labeled methanol and olefins. isotopic tracking shows high selectivity for homologation reaction, e.g. from ethylene, propene has one C-13 atom, butene has two C-13 atoms, and pentene has three C-13 atoms. Homologation of styrene's side chain also showed very specific isotopic pattern. The role of olefin homologation is speculated as a key reaction during the induction time of MTO process. (C) 2008 Elsevier Inc. All rights reserved.
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页码：83 / 86
页数：4
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