Syngas production via combined oxy-CO2 reforming of methane over Gd2O3-modified Ni/SiO2 catalysts in a fluidized-bed reactor |
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| Authors: | Jianzhong Guo Zhaoyin Hou Xiaoming Zheng |
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| Affiliation: | a Institute of Catalysis, Department of Chemistry, Zhejiang University (Xixi Campus), Hangzhou 310028, China
b Department of Chemistry, Zhejiang Forestry University, Lin’an 311300, China |
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| Abstract: | In this research, Ni/SiO2 catalyst was modified with different amount of Gd2O3 and characterized with temperature-programmed desorption of CO2 (CO2-TPD) and NH3 (NH3-TPD), temperature-programmed reduction with H2 (H2-TPR) and X-ray diffraction (XRD). It was found that Gd2O3-modified Ni/SiO2 catalysts possessed higher CO2 adsorption and activation ability due to the formation of surface carbonate species. H2-TPR and XRD characterizations found that the strong interaction among nickel, Gd2O3 and SiO2 took place, which improved the dispersion of Ni. Gd2O3-modified Ni/SiO2 catalysts exhibited higher activity and stability for the combined oxy-CO2 reforming of methane in fluidized-bed reactor. The H2/CO ratio in produced syngas could be controlled via controlling reaction temperature and CO2/O2 ratio in feed. |
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| Keywords: | Methane reforming Ni catalyst Fluidized-bed reactor |
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