Hydrogen/Deuterium-Exchange Reactions of Methane with Aromatics and Cyclohexane Catalyzed by a Nanoscopic Aluminum Chlorofluoride

被引：6
作者：
Calvo, Beatriz [1 ]
Braun, Thomas [1 ]
Kemnitz, Erhard [1 ]
机构：
[1] Humboldt Univ, Book Taylor Str 2, D-12489 Berlin, Germany
来源：
CHEMCATCHEM | 2018年 / 10卷 / 02期
关键词：
aluminum; deuterium; exchange reactions; fluorine; heterogeneous catalysis; H BOND ACTIVATION; BRONSTED ACID SITES; SOLID-STATE NMR; ROOM-TEMPERATURE; H/D EXCHANGE; GAS-PHASE; HETEROGENEOUS CATALYSIS; HYDROGEN-EXCHANGE; CARBON-DIOXIDE; GAMMA-ALUMINA;
D O I：
10.1002/cctc.201701327
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：
H/D-exchange reactions between methane and deuterated solvents such as [D-6]benzene and [D-12]cyclohexane were heterogeneously catalyzed by nanoscopic aluminum chlorofluoride (ACF=AlClxF3-x, x approximate to 0.05-0.3) under very mild conditions. (CNMR)-C-13 spectroscopy experiments at labeled methane revealed the formation of all isotopologues. AlCl3, AlBr3, HS-AlF3, -Al2O3, and -Al2O3 preheated at 700 degrees C did not show any H/D-exchange reaction of methane or [D-6]benzene. Mechanistically, electrophilic activation of methane was suggested at the ACF surface.
引用
收藏
页码：403 / 406
页数：4
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