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High temperature desorbed hydrogen in Ni/La2O3/alpha-Al(2)O(3)improves the initial reaction rate of CH4/CO2 reforming
Cui Yuehua; Xu Hengyong; Ge Qingjie; Bi Yadong; Wang Yuzhong; Hou Shoufu; Li Wenzhao
关键词High-temperature Desorbed Hydrogen Nickel-based Catalyst Lanthana Methane Reforming Reaction Initial Rate
刊名CHINESE JOURNAL OF CATALYSIS
2006-08-01
27期:8页:659-663
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Physical Sciences ; Technology
类目[WOS]Chemistry, Applied ; Chemistry, Physical ; Engineering, Chemical
研究领域[WOS]Chemistry ; Engineering
关键词[WOS]NI-H ; NICKEL-CATALYSTS ; METHANE ; CARBON ; CO2 ; BEHAVIOR ; CH4 ; ADSORPTION ; SPILLOVER ; MECHANISM
英文摘要The hydrogen desorbed at high temperature (high-temperature hydrogen) over the hydrogen reduced catalyst Ni/La2O3/alpha-Al2O3 was observed by H-2 temperature-programmed desorption. Kinetic experiments show that the activity of the reforming reaction is initially increased with the amount of high-temperature hydrogen in Ni/La2O3/alpha-Al2O3 and finally reaches a constant value due to the in situ generation of the high-temperature hydrogen. Pulse results indicate that the high-temperature hydrogen in Ni/La2O3/alpha-Al2O3 is prone to form CH. species with high x values, which has higher activity for the reaction of CHx with CO2. The Ni/La2O3/alpha-Al2O3 catalyst with plenty of high-temperature hydrogen can increase the x values of CHx species and decrease the activation energy for the reaction between CHx and CO2, leading to a higher reaction rate. The addition of La2O3 on the Ni/alpha-Al2O3 catalyst promotes the reverse water-gas shift reaction and slightly improves the activation of CO2. La2O3 also increases the amount of high-temperature hydrogen and its stability, resulting in higher x values of CHx species and improving the reforming reaction rate.
语种英语
WOS记录号WOS:000240609300005
引用统计
被引频次:4[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/140230
专题中国科学院大连化学物理研究所
作者单位Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Liaoning, Peoples R China
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Cui Yuehua,Xu Hengyong,Ge Qingjie,et al. High temperature desorbed hydrogen in Ni/La2O3/alpha-Al(2)O(3)improves the initial reaction rate of CH4/CO2 reforming[J]. CHINESE JOURNAL OF CATALYSIS,2006,27(8):659-663.
APA Cui Yuehua.,Xu Hengyong.,Ge Qingjie.,Bi Yadong.,Wang Yuzhong.,...&Li Wenzhao.(2006).High temperature desorbed hydrogen in Ni/La2O3/alpha-Al(2)O(3)improves the initial reaction rate of CH4/CO2 reforming.CHINESE JOURNAL OF CATALYSIS,27(8),659-663.
MLA Cui Yuehua,et al."High temperature desorbed hydrogen in Ni/La2O3/alpha-Al(2)O(3)improves the initial reaction rate of CH4/CO2 reforming".CHINESE JOURNAL OF CATALYSIS 27.8(2006):659-663.
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