Promoting effect of Zr on the catalytic combustion of methane over Pd/γ-Al2O3 catalyst

被引：0
作者：
Hongbo Na
Tianle Zhu
Zhiming Liu
Yifei Sun
机构：
[1] Beihang University,School of Chemistry and Environment, Key Laboratory of Bio
[2] Beijing University of Chemical Technology,Inspired Smart Interfacial Science and Technology of Ministry of Education
来源：
Frontiers of Environmental Science & Engineering | 2014年 / 8卷
关键词：
Pd-Zr/Al; O; methane; catalytic combustion; catalyst regeneration;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The effect of Zr on the catalytic performance of Pd/γ-Al2O3 for the methane combustion was investigated. The results show that the addition of Zr can improve the activity and stability of Pd/γ-Al2O3 catalyst, which, based on the catalyst characterization (N2 adsorption, XRD, CO-Chemisorption, XPS, CH4-TPR and O2-TPO), is ascribed to the interaction between Pd and Zr. The active phase of methane combustion over supported palladium catalyst is the Pd0/Pd2+ mixture. Zr addition inhibits Pd aggregation and enhances the redox properties of active phase Pd0/Pd2+. H2 reduction could effectively reduce the oxidation degree of Pd species and regenerate the active sites (Pd0/Pd2+).
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页码：659 / 665
页数：6
相关论文
共 125 条
[1]  
Gélin P(2002)Complete oxidation of methane at low temperature over noble metal based catalysts: a review Applied Catalysis B: Environmental 39 1-37
[2]  
Primet M(2002)Catalytic combustion of methane over palladium-based catalysts. Catalysis Reviews Science and Engineering 44 593-649
[3]  
Ciuparu D(2009)Catalytic combustion of methane at high temperatures: Cerium effect on PdO/Al Applied Catalysis A: General 360 2-7
[4]  
Lyubovsky M R(2007)O Catalysis Today 126 441-448
[5]  
Altman E(2008) catalysts Applied Catalysis B: Environmental 80 335-342
[6]  
Pfefferle L D(2007)Effects of ZrO Applied Catalysis B: Environmental 71 70-79
[7]  
Datye A(2010)/Al Catalysis Today 150 358-362
[8]  
Altman E(2004)O Applied Catalysis A: General 258 261-267
[9]  
Pfefferle L D(1995) properties on the catalytic activity of Pd catalysts for methane combustion and CO oxidation Catalysis Today 26 345-350
[10]  
Datye A(2008)Effect of alternate CH Applied Catalysis B: Environmental 77 237-247
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