La2O2CO3 supported Ni-Fe catalysts for hydrogen production from steam reforming of ethanol
来源期刊：Journal of Rare Earths2011年第9期
论文作者：石秋杰 彭子青 谌伟庆 张宁
文章页码：861 - 865
摘 要：La2O2CO3 was prepared by calcination of La2 （CO3）3 in the air. Catalysts Ni-Fe/La2O2CO3 with different mole ratios of Ni to Fe, Ni/La2O2CO3 and Fe/La2O2CO3 were prepared by impregnation method. The catalytic properties were evaluated on steam reforming of ethanol （SRE） from 300 to 700 ℃ under atmospheric pressure and the samples were characterized by Brunauer-Emmett-Teller method （BET）, X-ray diffraction （XRD） and temperature programmed reduction （TPR）. The results showed that Ni-Fe bimetallic catalysts exhibited higher activities than single metallic catalysts, which was attributed to the co-existence of well dispersed Ni, Fe and LaFeyNi1-yO3. It was found that the catalyst Ni-Fe/La2O2CO3 containing 10 wt.% Ni and 3 wt.%-5 wt.% Fe showed the best performance, the conversion of ethanol was 100%, the selectivity of H2 was higher than 90%, and the selectivity of CO was lower than 1.5% at 400 ℃.
石秋杰，彭子青，谌伟庆，张宁
Institute of Applied Chemistry, Nanchang University
摘 要：La2O2CO3 was prepared by calcination of La2 （CO3）3 in the air. Catalysts Ni-Fe/La2O2CO3 with different mole ratios of Ni to Fe, Ni/La2O2CO3 and Fe/La2O2CO3 were prepared by impregnation method. The catalytic properties were evaluated on steam reforming of ethanol （SRE） from 300 to 700 ℃ under atmospheric pressure and the samples were characterized by Brunauer-Emmett-Teller method （BET）, X-ray diffraction （XRD） and temperature programmed reduction （TPR）. The results showed that Ni-Fe bimetallic catalysts exhibited higher activities than single metallic catalysts, which was attributed to the co-existence of well dispersed Ni, Fe and LaFeyNi1-yO3. It was found that the catalyst Ni-Fe/La2O2CO3 containing 10 wt.% Ni and 3 wt.%-5 wt.% Fe showed the best performance, the conversion of ethanol was 100%, the selectivity of H2 was higher than 90%, and the selectivity of CO was lower than 1.5% at 400 ℃.
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