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Synthesis of Cu/Ni-La0.7Sr0.3Cr0.5Mn0.5O3-δ and its catalytic performance on dry methane reforming
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作者 Dingwen Kang Jie Yu +3 位作者 Wenhui Ma Min Zheng Yunfei He Pengfei Li 《中国稀土学报:英文版》 SCIE EI CAS CSCD 2019年第6期585-593,共9页
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 r... 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). 展开更多
关键词 Cu/Ni-LSCM Characterization DRY METHANE REFORMING Carbon DEPOSITION Rare earths
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