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Effect of Structure of Pd/WO3-ZrO2 Catalyst on Its Activity for Direct Oxidation of Ethylene to Acetic Acid
Wang Lixia1,2; Xu Shuliang1,2; Chu Wenling1; Yang Weishen1; Chu WL(楚文玲); Yang WS(杨维慎)
关键词Tungstate Zirconia Palladium Ethylene Oxidation Acetic Acid
刊名CHINESE JOURNAL OF CATALYSIS
2009-09-01
30期:9页:864-872
收录类别SCI
文章类型Article
部门归属5
项目归属504
产权排名1;1
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]TUNGSTATED ZIRCONIA CATALYSTS ; SOLID ACID ; SELECTIVE OXIDATION ; OXIDE DOMAINS ; PERFORMANCE ; PALLADIUM ; TRANSESTERIFICATION ; SUPPORTS ; WOX/ZRO2 ; HYDROGEN
英文摘要A series of 1%Pd/WO3-ZrO2 catalysts with different W/Zr ratios and calcination temperatures of WO3-ZrO2 were prepared by an impregnation method. Their crystal structure, surface state, and acidity were determined using X-ray diffraction, N-2 adsorption, NH3 temperature-programmed desorption, pyridine infrared spectroscopy, and temperature-programmed reduction. Special attention was paid to the surface states of tungsten and palladium under different preparation conditions. The results revealed that WOx surface species underwent a transformation from polytungstate species to coexistent polytungstate/crystalline WO3 and further to crystalline WO3 particles with increase of W/Zr ratio and calcination temperature. The W/Zr = 0.2 sample calcined at 1 073 K showed the maximum amount of polytungstates, which were responsible for the excellent activity. Moreover, the state of palladium was only dependent on the calcination temperature. Well-dispersed Pd species were responsible for high selectivity to acetic acid, and large metallic Pd particles were favorable for ethylene combustion.
语种英语
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WOS记录号WOS:000271079600004
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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/321008/101995
专题中国科学院大连化学物理研究所
通讯作者Chu WL(楚文玲); Yang WS(杨维慎)
作者单位1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Liaoning, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
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Wang Lixia,Xu Shuliang,Chu Wenling,et al. Effect of Structure of Pd/WO3-ZrO2 Catalyst on Its Activity for Direct Oxidation of Ethylene to Acetic Acid[J]. CHINESE JOURNAL OF CATALYSIS,2009,30(9):864-872.
APA Wang Lixia,Xu Shuliang,Chu Wenling,Yang Weishen,楚文玲,&杨维慎.(2009).Effect of Structure of Pd/WO3-ZrO2 Catalyst on Its Activity for Direct Oxidation of Ethylene to Acetic Acid.CHINESE JOURNAL OF CATALYSIS,30(9),864-872.
MLA Wang Lixia,et al."Effect of Structure of Pd/WO3-ZrO2 Catalyst on Its Activity for Direct Oxidation of Ethylene to Acetic Acid".CHINESE JOURNAL OF CATALYSIS 30.9(2009):864-872.
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