Synthesis of Cu/Ni-La0.7Sr0.3Cr0.5Mn0.5O3-δ and its catalytic performance on dry methane reforming
来源期刊：Journal of Rare Earths2019年第6期
论文作者：Dingwen Kang Jie Yu Wenhui Ma Min Zheng Yunfei He Pengfei Li
文章页码：585 - 593
摘 要：In this study,Cu/Ni-La0.7Sr0.3Cr0.5Mn0.5O3-δ（LSCM） catalysts were synthesized via the citric acid-nitrate process（CNP） and chemical co-precipitation. The catalytic performance of Cu/Ni-LSCM catalysts on dry methane reforming was evaluated in a fixed-bed reactor at 550/650 ℃ and atmosphere pressure. Cu/Ni loading was investigated as an influencing factor, which led to 5 cases of samples according to the different Cu/Ni mass ratios. The catalysts were characterized by X-ray diffraction（XRD）, field emissionscanning electron microscope（FE-SEM）, Brunauer-Emmett-Teller（BET） measurement, X-ray photoelectron spectroscopy（XPS）, hydrogen-based temperature-programmed reduction（H2-TPR） and thermos gravimetric analyzer（TGA）. The results show that the methane conversion increases, the resistance against metal sintering increases and the carbon deposition drops after the copper is introduced. This optimum performance can be obtained under Case 3（Cu:Ni:LSCM = 1:3:6 in mass ratio）.
Dingwen Kang1,2，Jie Yu1,2，Wenhui Ma1,2，Min Zheng1，Yunfei He1,2，Pengfei Li1,2
1. Faculty of Metallurgical and Energy Engineering,Kunming University of Science and Technology2. National Engineering Laboratory for Vacuum Metallurgy,Kunming University of Science and Technology
摘 要：In this study,Cu/Ni-La0.7Sr0.3Cr0.5Mn0.5O3-δ（LSCM） catalysts were synthesized via the citric acid-nitrate process（CNP） and chemical co-precipitation. The catalytic performance of Cu/Ni-LSCM catalysts on dry methane reforming was evaluated in a fixed-bed reactor at 550/650 ℃ and atmosphere pressure. Cu/Ni loading was investigated as an influencing factor, which led to 5 cases of samples according to the different Cu/Ni mass ratios. The catalysts were characterized by X-ray diffraction（XRD）, field emissionscanning electron microscope（FE-SEM）, Brunauer-Emmett-Teller（BET） measurement, X-ray photoelectron spectroscopy（XPS）, hydrogen-based temperature-programmed reduction（H2-TPR） and thermos gravimetric analyzer（TGA）. The results show that the methane conversion increases, the resistance against metal sintering increases and the carbon deposition drops after the copper is introduced. This optimum performance can be obtained under Case 3（Cu:Ni:LSCM = 1:3:6 in mass ratio）.
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