Watching the Methanol-to-Olefin Process with Time- and Space-Resolved High-Energy Operando X-ray Diffraction

被引：65

作者：

Wragg, David S. ^{[1
,2
]}

Brien, Matthew G. O. ^{[3
]}

Bleken, Francesca L. ^{[1
,2
]}

Di Michiel, Marco ^{[4
]}

Olsbye, Unni ^{[1
,2
]}

Fjellvag, Helmer ^{[1
,2
]}

机构：

[1] Univ Oslo, InGAP Ctr Res Based Innovat, N-0315 Oslo, Norway

[2] Univ Oslo, Dept Chem, Ctr Mat & Nanotechnol, N-0315 Oslo, Norway

[3] Univ Utrecht, Debye Inst Nanomat Sci, NL-3584 CG Utrecht, Netherlands

[4] European Synchrotron Radiat Facil, F-38000 Grenoble, France

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2012年 / 51卷 / 32期

关键词：

heterogeneous catalysis; industrial chemistry; reaction mechanisms; X-ray diffraction; zeolites; REACTION-MECHANISM; MTO REACTION; SAPO-34; HYDROCARBONS; CONVERSION;

D O I：

10.1002/anie.201203462

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The movement of reactants in a large methanol-to-olefin reactor bed was visualized by fast scanning synchrotron X-ray diffraction (see picture). Changes in the structure of the catalyst showed the formation of reaction intermediates and coke, which can be tracked along the reactor bed. The observations lead to a new model for the progress of the reaction and explain the role of methanol in coke formation. Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

引用

页码：7956 / 7959

页数：4

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