Zeolite shape-selectivity in the gem-methylation of aromatic hydrocarbons

被引：148

作者：

Lesthaeghe, David

De Sterck, Bart

Van Speybroeck, Veronique

Marin, Guy B.

Waroquier, Michel

机构：

[1] Univ Ghent, Ctr Mol Modeling, B-9000 Ghent, Belgium

[2] Univ Ghent, Petrochem Tech Lab, B-9000 Ghent, Belgium

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2007年 / 46卷 / 08期

关键词：

ab initio calculations; arenes; heterogeneous catalysis; methanol-to-olefin process; zeolites;

D O I：

10.1002/anie.200604309

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A glove for the purpose: The kind of olefins obtained from methanol in zeolites is strongly dependent on specific combinations of the intermediate organic hydrocarbon-pool species and zeolite topology (see picture). If the cage is too large, neutral species are favored over reactive cations. If the cage is too small, transition-state-shape selectivity poses severe limitations on the reactivity of bulkier species. (Figure Presented). © 2007 Wiley-VCH Verlag GmbH & Co. KGaA.

引用

页码：1311 / 1314

页数：4

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