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).
Journal of Rare Earths
National Natural Science Foundation of China(51764028)
Nature Science of Yunnan Province(2016FB080).
Corresponding author:Jie Yu.Faculty of Metallurgical and Energy Engineering,Kunming University of Science and Technology,Kunming,650093,China.E-mail address:firstname.lastname@example.org(J.Yu).