Tuning performance of Pd/Sn0.9Ce0.1O2 catalyst for methane combustion by optimizing calcination temperature of support
来源期刊：Rare Metals2019年第2期
论文作者：Kai Shen Jia-Pan Lin Qian Xia Lu Dai Guo-Jun Zhou Yang-Long Guo Guan-Zhong Lu Wang-Cheng Zhan
文章页码：107 - 114
摘 要：A series of 0.2 wt% Pd/Sn0.9Ce0.1O2 catalysts were prepared by impregnation method based on the presynthesis of Sn0.9Ce0.1O2 support prepared by co-precipitation method, and then characterized by Brunauer–Emmett–Teller（BET）, X-ray diffraction（XRD）, X-ray photoelectron spectroscopy（XPS）, Raman, CO chemical adsorption and hydrogen temperature-programmed reduction（H2-TPR） techniques. The effect of calcination temperature of the composite oxide support on the catalytic performances of the Pd/Sn0.9Ce0.1O2 catalyst for the CH4 total oxidation was studied. It is found that the catalytic activity of the Pd/Sn0.9Ce0.1O2 catalyst increases with the increase in calcination temperature of the Pd/Sn0.9Ce0.1O2 support. The 0.2 wt% Pd/Sn0.9Ce0.1O2/1100 catalyst(the Pd/Sn0.9Ce0.1O2 support was calcined at 1100 ℃) exhibits the best reactive activity(T10= 255 ℃). The excellent activity of the 0.2 wt% Pd/Sn0.9Ce0.1O2/1100 catalyst should be attributed to the high reducibility of PdO, the excellent oxygen mobility of the support and the high content of active Pd2+ species on the Pd/Sn0.9Ce0.1O2 catalyst.
Kai Shen1，Jia-Pan Lin2，Qian Xia1，Lu Dai1，Guo-Jun Zhou1，Yang-Long Guo2，Guan-Zhong Lu2，Wang-Cheng Zhan2
1. Technology Center, China Tobacco Zhejiang Industrial Co.,Ltd.2. Key Laboratory for Advanced Materials and Research Institute of Industrial Catalysis, East China University of Science and Technology
摘 要：A series of 0.2 wt% Pd/Sn0.9Ce0.1O2 catalysts were prepared by impregnation method based on the presynthesis of Sn0.9Ce0.1O2 support prepared by co-precipitation method, and then characterized by Brunauer–Emmett–Teller（BET）, X-ray diffraction（XRD）, X-ray photoelectron spectroscopy（XPS）, Raman, CO chemical adsorption and hydrogen temperature-programmed reduction（H2-TPR） techniques. The effect of calcination temperature of the composite oxide support on the catalytic performances of the Pd/Sn0.9Ce0.1O2 catalyst for the CH4 total oxidation was studied. It is found that the catalytic activity of the Pd/Sn0.9Ce0.1O2 catalyst increases with the increase in calcination temperature of the Pd/Sn0.9Ce0.1O2 support. The 0.2 wt% Pd/Sn0.9Ce0.1O2/1100 catalyst(the Pd/Sn0.9Ce0.1O2 support was calcined at 1100 ℃) exhibits the best reactive activity(T10= 255 ℃). The excellent activity of the 0.2 wt% Pd/Sn0.9Ce0.1O2/1100 catalyst should be attributed to the high reducibility of PdO, the excellent oxygen mobility of the support and the high content of active Pd2+ species on the Pd/Sn0.9Ce0.1O2 catalyst.
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