CO2 methanation on Ni/Ce0.5Zr0.5O2 catalysts for the production of synthetic natural gas

被引：99

作者：

Pan, Qiushi ^{[1
,2
]}

Peng, Jiaxi ^{[1
]}

Sun, Tianjun ^{[1
]}

Gao, Diannan ^{[1
]}

Wang, Sheng ^{[1
]}

Wang, Shudong ^{[1
]}

机构：

[1] Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

来源：

FUEL PROCESSING TECHNOLOGY | 2014年 / 123卷

基金：

中国国家自然科学基金; 国家高技术研究发展计划(863计划);

关键词：

Methanation; Ce0.5Zr0.5O2; Carbon dioxide; Synthetic natural gas; Oxygen vacancy; Surface Ce(III); CEO2-ZRO2 MIXED OXIDES; CARBON-DIOXIDE; SOLID-SOLUTIONS; REDOX BEHAVIOR; SHIFT REACTION; CERIA; ZIRCONIA; CEO2; TEMPERATURE; OXIDATION;

D O I：

10.1016/j.fuproc.2014.01.004

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

A series of nickel catalysts supported on Ce0.5Zr0.5O2 were prepared by impregnation (IMP), deposition-precipitation (DP) and urea combustion (UC) methods. Their performances of CO2 methanation were investigated for the production of synthetic natural gas from coal. The catalysts were characterized by BET, H-2-chemisorption, XRD, Raman, XPS, CO2-TPD and H-2-TPR techniques. The results indicated that Ni/Ce0.5Zr0.5O2 catalysts prepared by impregnation method showed the highest activity. It can attain 73% CO2 conversion at 300 degrees C with a reaction rate of 20.5 mmol CO2/(gcat min) and have a CH4 selectivity of 100%. The higher activity of IMP sample is due to its higher nickel surface area, oxygen vacancies, Ce(III) and basic sites than others. (C) 2014 Published by Elsevier B.V.

引用

页码：166 / 171

页数：6

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