Time-resolved 13C MAS NMR investigation of chemical reactions:: the MTG process

被引：0

作者：

Mildner, T ^{[1
]}

Ernst, H ^{[1
]}

Freude, D ^{[1
]}

Kärger, J ^{[1
]}

Winkler, U ^{[1
]}

机构：

[1] Univ Leipzig, Abt Grenzflachenphys, D-04103 Leipzig, Germany

来源：

MAGNETIC RESONANCE IN CHEMISTRY | 1999年 / 37卷

关键词：

NMR; C-13; magic angle spinning; catalysis; zeolite ZSM-5; MTG process;

D O I：

10.1002/(SICI)1097-458X(199912)37:13<S38::AID-MRC535>3.0.CO;2-8

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Sample heating with a laser beam facilitates time-dependent magic angle spinning (MAS) NMR spectroscopy of high-temperature reactions in situ. The methanol-to-gasoline conversion (MTG process) was monitored by C-13 MAS NMR spectroscopy using the stop-and-go method in addition to the continuous heating of sealed samples. It was found that effective alkane formation is forced by interrupted laser heating. With a decrease of the dimethyl ether concentration a constant concentration of methanol was observed under both continuous and interrupted heating conditions. Copyright (C) 1999 John Wiley & Sons, Ltd.

引用

页码：S38 / S42

页数：5

共 17 条

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