Highly efficient nickel-niobia composite catalysts for hydrogenation of CO2 to methane

被引：56

作者：

Gnanakumar, Edwin S. ^{[1
]}

Chandran, Narendraraj ^{[2
]}

Kozhevnikov, Ivan V. ^{[3
]}

Grau-Atienza, Aida ^{[4
]}

Ramos Fernandez, Enrique V. ^{[4
]}

Sepulveda-Escribano, Antonio ^{[4
]}

Shiju, N. Raveendran ^{[1
]}

机构：

[1] Univ Amsterdam, Vant Hoff Inst Mol Sci, POB 94157, NL-1090 GD Amsterdam, Netherlands

[2] Indian Inst Sci, Ctr Nano Sci & Engn, Bangalore, Karnataka, India

[3] Univ Liverpool, Dept Chem, Liverpool L69 7ZD, Merseyside, England

[4] Univ Alicante, Lab Mat Avanzados, Inst Univ Mat Alicante, Dept Quim Inorgan, Apartado 99, E-03080 Alicante, Spain

来源：

CHEMICAL ENGINEERING SCIENCE | 2019年 / 194卷

关键词：

Niobia; CO2; utilisation; Methanation; Nickel; Heterogeneous catalysis; Methane; POWER-TO-GAS; CARBON-DIOXIDE; CLIMATE-CHANGE; NANOPARTICLES; DEACTIVATION; CONVERSION; OXIDATION; PROGRESS; CAPTURE; SILICA;

D O I：

10.1016/j.ces.2018.08.038

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

We studied the catalytic hydrogenation of CO2 to methane using nickel-niobia composite catalysts. Catalysts containing 10-70 wt% Ni were synthesized by wet impregnation and tested for CO 2 hydrogenation in a flow reactor. 40 wt% was found to be the optimum Ni loading, which resulted in CO2 conversion of 81% at 325 degrees C. We also calcined the Nb2O5 support at different temperatures to study the influence of calcination temperature on the catalytic performance. 40 wt% Ni loaded on Nb-2 O-5, which was calcined at 700 degrees C gave higher methanation activity (91% conversion of CO2). Time on stream study for 50 h showed a stable activity and selectivity; thus confirming the scope for practical application. (C) 2018 Published by Elsevier Ltd.

引用

页码：2 / 9

页数：8

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