Optimal Water Coverage on Alumina: A Key to Generate Lewis Acid-Base Pairs that are Reactive Towards the C-H Bond Activation of Methane

被引：181

作者：

Wischert, Raphael ^{[1
,2
]}

Coperet, Christophe ^{[1
]}

Delbecq, Francoise ^{[2
]}

Sautet, Philippe ^{[2
]}

机构：

[1] Univ Lyon, CNRS, Inst Chim Lyon, CPE Lyon,C2P2, F-69616 Villeurbanne, France

[2] Univ Lyon, Inst Chim Lyon, CNRS, Ecole Normale Super Lyon, F-69342 Lyon 07, France

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2011年 / 50卷 / 14期

关键词：

alumina; C-H bond activation; density functional calculations; Lewis acid-base pairs; methane; GAMMA-ALUMINA; CATALYTIC ALUMINAS; EXCHANGE-REACTION; HYDROXYL-GROUPS; SURFACES; SITES; DIFFRACTION; CHEMISTRY; DEUTERIUM; ENERGY;

D O I：

10.1002/anie.201006794

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A low OH coverage, resulting from pretreatment at 700°C, generates metastable three-coordinate AlIII sites and reactive (Al III,O) Lewis acid-base pairs on γ-alumina. Water plays a dual role by increasing the basicity of oxygen atoms without affecting the Lewis acidity of the AlIII sites and by stabilizing the metastable (110) termination, where these sites exist. Copyright © 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

引用

页码：3202 / 3205

页数：4

共 36 条

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