CARBON DIOXIDE METHANATION ON ORDERED MESOPOROUS CO/KIT-6 CATALYST |
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| Authors: | Guilin Zhou Tian Wu Haibing Zhang Hongmei Xie Yongcheng Feng |
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| Affiliation: | 1. Key Laboratory of Catalysis Science and Technology of Chongqing Education Commission, Department of Chemistry and Chemical Engineering , Chongqing Technology and Business University , Chongqing , China upczguilin@sohu.com;3. Key Laboratory of Catalysis Science and Technology of Chongqing Education Commission, Department of Chemistry and Chemical Engineering , Chongqing Technology and Business University , Chongqing , China |
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| Abstract: | Mesoporous Co/KIT-6 and Co/SiO2 catalysts were prepared via hydrogen reduction and were subsequently used in CO2 catalytic hydrogenation to produce methane. The properties of the prepared Co/KIT-6 catalyst were investigated by low-angle X-ray diffraction, Brunauer-Emmett-Teller analysis, and transmission electron microscopy. The results indicate that the synthesized Co/KIT-6 catalyst has mesoporous structures with well-dispersed Co species, as well as higher CO2 catalytic hydrogenation activities than that of the Co/SiO2 catalyst. The Co/KIT-6 catalyst has a large specific surface area (368.9 m2 · g?1) and a highly ordered bicontinuous mesoporous structure. This catalyst exhibits excellent CO2 catalytic hydrogenation activity and methane product selectivity; the CO2 conversion and methane selectivity of the Co/KIT-6 catalyst at 280°C are 48.9% and 100%, respectively. The highly ordered, bicontinuous mesoporous structure of the Co/KIT-6 catalyst improves selectivity for the methane product. |
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| Keywords: | Carbon dioxide Catalytic hydrogenation Methanation Ordered mesoporous Co/KIT-6 catalyst |
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