An in situ Raman study of dimethyl carbonate synthesis from carbon dioxide and methanol over zirconia

被引：46

作者：

Xie, SB ^{[1
]}

Bell, AT

机构：

[1] Lawrence Berkeley Natl Lab, Div Chem Sci, Berkeley, CA 94720 USA

[2] Univ Calif Berkeley, Dept Chem Engn, Berkeley, CA 94720 USA

来源：

CATALYSIS LETTERS | 2000年 / 70卷 / 3-4期

关键词：

dimethyl carbonate; zirconia; methanol; carbon dioxide; Raman spectroscopy;

D O I：

10.1023/A:1018837317910

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：

In situ Raman spectroscopy has been used to investigate the mechanism of dimethyl carbonate (DMC) synthesis via the reaction of methanol with carbon dioxide over zirconia. Methanol adsorption leads to the appearance of adsorbed methoxide groups. whereas CO2 adsorption leads to the formation of carbonate species. Monomethyl carbonate species. (CH3O)COO(Zr)(2). are formed by the reaction of methoxide and monodentate carbonate species and DMC is formed via the further reaction of monomethyl carbonate species with methanol. This sequence is supported by evidence that DMC decomposition on zirconia proceeds via the reverse of the proposed mechanism.

引用

页码：137 / 143

页数：7

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