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：
国家高技术研究发展计划(863计划); 中国国家自然科学基金;
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
收藏
页码：166 / 171
页数：6
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