Oxidative dehydrogenation of ethane over RE-NiO （RE=La,Nd,Sm,Gd） catalysts
来源期刊：JOURNAL OF RARE EARTHS2013年第7期
论文作者：周琴 周迪珊 吴瑛 吴廷华
文章页码：669 - 673
摘 要：RE-NiO（RE=La,Nd,Sm,Gd） catalysts were prepared by a modified sol-gel method and characterized by X-ray diffraction（XRD）,transmission electron microscopy（TEM）,BET surface area analysis,H 2 temperature-programmed reduction（H 2-TPR）,and O 2 temperature-programmed desorption（O 2-TPD）.The oxidative dehydrogenation of ethane（ODHE） to ethylene was applied to evaluate catalytic performance of the samples.The results showed that the doping of RE affected the physicochemical properties of the catalysts.The strong interaction between Gd and NiO played an important role in the lessened reducibility and the distribution of adsorbed oxygen species,consequently influenced the catalytic performance.The best yield to ethylene of 29% was obtained over the Gd-NiO catalyst with an ethane conversion of 56%.
周琴，周迪珊，吴瑛，吴廷华
Zhejiang Key Laboratory for Reactive Chemistry on Solid Surfaces,Institute of Physical Chemistry,Zhejiang Normal University
摘 要：RE-NiO（RE=La,Nd,Sm,Gd） catalysts were prepared by a modified sol-gel method and characterized by X-ray diffraction（XRD）,transmission electron microscopy（TEM）,BET surface area analysis,H 2 temperature-programmed reduction（H 2-TPR）,and O 2 temperature-programmed desorption（O 2-TPD）.The oxidative dehydrogenation of ethane（ODHE） to ethylene was applied to evaluate catalytic performance of the samples.The results showed that the doping of RE affected the physicochemical properties of the catalysts.The strong interaction between Gd and NiO played an important role in the lessened reducibility and the distribution of adsorbed oxygen species,consequently influenced the catalytic performance.The best yield to ethylene of 29% was obtained over the Gd-NiO catalyst with an ethane conversion of 56%.
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