Selective synthesis of carbon monoxide via formates in reverse water-gas shift reaction over alumina-supported gold catalyst

被引：50

作者：

Ishito, Nobuhiro ^{[1
,2
]}

Hara, Kenji ^{[1
,3
]}

Nakajima, Kiyotaka ^{[1
,2
]}

Fukuoka, Atsushi ^{[1
,2
]}

机构：

[1] Hokkaido Univ, Inst Catalysis, Sapporo, Hokkaido 0010021, Japan

[2] Hokkaido Univ, Grad Sch Chem Sci & Engn, Sapporo, Hokkaido 0608628, Japan

[3] Tokyo Univ Technol, Sch Engn, Hachioji, Tokyo 1920982, Japan

来源：

JOURNAL OF ENERGY CHEMISTRY | 2016年 / 25卷 / 02期

关键词：

Reverse water-gas shift reaction; Carbon dioxide; Hydrogen; Formate; Carbon monoxide; Alumina; Gold; FORMIC-ACID; DIOXIDE HYDROGENATION; METHANOL SYNTHESIS; CO2; MECHANISM; DECOMPOSITION; CU;

D O I：

10.1016/j.jechem.2015.12.005

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Thermal decomposition of formic acid on SiO2, CeO2 and gamma-Al2O3 was studied as an elementary step of reverse water-gas shit reaction (RWGS) over supported Au catalysts. gamma-Al2O3 showed the highest CO selectivity among the tested oxides in the decomposition of formic acid. Infrared spectroscopy showed the formation of four formate species on gamma-Al2O3: three eta(1)-type and one mu(2)-type species, and these formates decomposed to CO at 473 K or higher. Au-loaded gamma-Al2O3 samples were prepared by a deposition precipitation method and used as catalysts for RWGS. The supported Au catalyst gave CO with high selectivity over 99% from CO2 and H-2, which is attributed to the formation of formates on Au and subsequent decomposition to CO on gamma-Al2O3. (C) 2015 Science Press and Dalian Institute of Chemical Physics. All rights reserved.

引用

页码：306 / 310

页数：5

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