Co/CeO2 for ethanol steam reforming： effect of ceria morphology

Nanorods （NR） and nanoparticles （NP） of ceria were prepared by hydrothermal synthesis method and used as catalyst support to load cobalt for steam reforming of ethanol （SRE）. The catalysts were characterized by using temperature programmed reduction, X-ray diffraction, transmission electron microsco...

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Bibliographic Details
Published inJournal of rare earths Vol. 31; no. 6; pp. 565 - 571
Main Author 王红 张丽娟 李淼 刘源 白雪
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.06.2013
Subjects
Catalysts
ceria
Cerium oxide
Cobalt
Deposition
Ethanol
Ethyl alcohol
morphology
Nanorods
NP催化剂
Rare earth metals
rare earths
steam reforming
X-射线衍射
乙醇水蒸气重整
催化剂载体
形态
氧化铈
程序升温还原
透射电子显微镜
ceria
cobalt
morphology
steam reforming
ethanol
rare earths
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Summary:Nanorods （NR） and nanoparticles （NP） of ceria were prepared by hydrothermal synthesis method and used as catalyst support to load cobalt for steam reforming of ethanol （SRE）. The catalysts were characterized by using temperature programmed reduction, X-ray diffraction, transmission electron microscopy and thermal analysis techniques. CeO2 NP had relatively smaller particle size and larger surface area, and CeO2 NR could form more oxygen vacancies. For SRE reaction, Co/CeO2 NP was more active and exhibited a little better anti-sintering ability, while Co/CeO2 NR showed obviously better anti-carbon deposition ability. The larger surface area and higher dispersion of cobalt oxide resulted in the higher activity for Co/CeO2 NP catalyst. Meanwhile, the stronger interaction between cobalt species and ceria was attributed to the better anti-sintering ability for Co/CeO2 NP. The improvement of the anti-carbon deposition for Co/CeO2 NR was owing to the generation of oxygen vacancies from the ceria nanorods.
Bibliography:11-2788/TF
WANG Hong , ZHANG Lijuan , LI Miao, LIU Yuan , BAI Xue （1. School of Chemical Engineering, Inner Mongolia University of Technology, Huhhot 010051, China; 2. Tianjin Key Laboratory of Applied Catalysis Science and Engineering, Department of Catalysis Science and Technology, School of Chemical Engineering, Tianjin University, Tianjin 300072, China）
morphology; ceria; cobalt; ethanol; steam reforming; rare earths
Nanorods （NR） and nanoparticles （NP） of ceria were prepared by hydrothermal synthesis method and used as catalyst support to load cobalt for steam reforming of ethanol （SRE）. The catalysts were characterized by using temperature programmed reduction, X-ray diffraction, transmission electron microscopy and thermal analysis techniques. CeO2 NP had relatively smaller particle size and larger surface area, and CeO2 NR could form more oxygen vacancies. For SRE reaction, Co/CeO2 NP was more active and exhibited a little better anti-sintering ability, while Co/CeO2 NR showed obviously better anti-carbon deposition ability. The larger surface area and higher dispersion of cobalt oxide resulted in the higher activity for Co/CeO2 NP catalyst. Meanwhile, the stronger interaction between cobalt species and ceria was attributed to the better anti-sintering ability for Co/CeO2 NP. The improvement of the anti-carbon deposition for Co/CeO2 NR was owing to the generation of oxygen vacancies from the ceria nanorods.
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ISSN:1002-0721
2509-4963
DOI:10.1016/S1002-0721(12)60321-4