Catalytic Partial Oxidation of Methane over Ni/CeO2-ZrO2-Al2O3
来源期刊：JOURNAL OF RARE EARTHS2007年第3期
论文作者：Zhong Junbo Gong Maochu Wei Zhenling Mei Dajiang Ma Di Chen Yaoqiang
Key words：Ni/CeO2-ZrO2-Al2O3 catalyst; catalytic partial oxidation of methane; carbon deposition; rare earths;
Abstract: Nickel catalysts supported on CeO2-ZrO2-CeO2, ZrO2-Al2O3 and Al2O3 were prepared and characterized by means of X-ray diffraction (XRD), BET areas, H2 temperature-programmed reduction (H2-TPR), and X-ray photoelectron spectroscopy (XPS). Through the test of catalytic partial oxidation of methane (CPOM), Ni/CeO2-ZrO2-Al2O3 displayed the highest activity, which resulted from its largest BET area and best NiO dispersion. Furthermore, Ni/CeO2-ZrO2-Al2O3 maintained a long-time stability in CPOM, which was attributed to its best coking resistance among all the prepared catalysts.
Zhong Junbo1，Gong Maochu1，Wei Zhenling1，Mei Dajiang1，Ma Di1，Chen Yaoqiang1
(1.College of Chemistry, Sichuan University, Chengdu 610064, China)
Abstract:Nickel catalysts supported on CeO2-ZrO2-CeO2, ZrO2-Al2O3 and Al2O3 were prepared and characterized by means of X-ray diffraction (XRD), BET areas, H2 temperature-programmed reduction (H2-TPR), and X-ray photoelectron spectroscopy (XPS). Through the test of catalytic partial oxidation of methane (CPOM), Ni/CeO2-ZrO2-Al2O3 displayed the highest activity, which resulted from its largest BET area and best NiO dispersion. Furthermore, Ni/CeO2-ZrO2-Al2O3 maintained a long-time stability in CPOM, which was attributed to its best coking resistance among all the prepared catalysts.
Key words:Ni/CeO2-ZrO2-Al2O3 catalyst; catalytic partial oxidation of methane; carbon deposition; rare earths;
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