In-Situ FT-IR Spectroscopy Investigation of CH4 and CO2 Reaction

被引：6

作者：

Liu, Yongjun ^{[1
]}

Cui, Nan ^{[1
]}

Jia, Penglong ^{[1
]}

Huang, Wei ^{[1
,2
]}

机构：

[1] Taiyuan Univ Technol, Key Lab Coal Sci & Technol, Minist Educ & Shanxi Prov, Taiyuan 030024, Peoples R China

[2] Coal Convers Engn Technol Co TYUT, Taiyuan 030024, Peoples R China

来源：

CATALYSTS | 2020年 / 10卷 / 01期

基金：

中国国家自然科学基金;

关键词：

CH4; CO2; CH3COOH; step-wise route; in-situ FT-IR; Cu-Co; ACETIC-ACID; PARTIAL OXIDATION; DIRECT CONVERSION; CARBON-DIOXIDE; NO ADSORPTION; METHANE; CATALYSTS; ZIRCONIA; DFT;

D O I：

10.3390/catal10010131

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：

An exclusive trace of CH4 direct carboxylation with CO2 by a stepwise technology was investigated using in-situ FT-IR spectroscopy. The results showed that CH4 was dissociated to atomic hydrogen and M-CHx species on catalyst surface when it was first introduced in the system, then CO2 was inserted into the intermediate to direct carboxylate. Finally, the subsequent adsorption of CH4 provided active hydrogen for the species of previous surface reaction, thus leading to the formation of the product. It was also found that the first introduction of CO2 on the surface of the "clean" catalyst might likely react with surface H species, which had an irreversible effect on the catalytic activity of CH4.

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页数：10

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