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Effect of support and acidity of catalyst on direct oxidation of ethylene to acetic acid
Zhang, JL; Wang, XP; Cai, TX; Cheng, MJ; Bao, XH
关键词Palladium Acid Silica Activated Carbon Acid Clay Supported Catalyst Ethylene Oxidation Acetic Acid
刊名CHINESE JOURNAL OF CATALYSIS
2002-05-01
23期:3页:203-206
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]HETEROPOLY
英文摘要The direct oxidation of ethylene to acetic acid over Pd-acid/support catalysts in a fixed-bed reactor was studied The results showed that when the phospho-tungstic acid ( H3PW12), phospho-molybdic acid (H3PMo12) I phosphoric acid, sulfuric acid, silicotungstic acid (H4SiW12) or its soldium salts were supported on Pd/SiO2, the acid strength influences the catalytic activity strongly, and the catalyst with stronger acid strength has higher activity. The acidity of Pd-H4SiW12 catalysts supported respectively on SiO2, activated carbon (AC), and acid clay (ACy) was characterized by NH3-TPD and i-C3H7OH dehydration. The results showed that the supports affect the catalytic activity through influencing the acid strength. The more the strong acid sites on catalyst, the higher the catalytic activity. When the silica, AC or ACy was used as support, the influence of Pd dispersion determined by hydrogen adsorption on the catalytic activity can not be observed. Therefore, it can be deduced that the decisive factor to the activity of catalysts is the acid strength but not the Pet dispersion.
语种英语
WOS记录号WOS:000176236500004
引用统计
被引频次:6[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/321008/139045
专题中国科学院大连化学物理研究所
作者单位1.Dalian Univ Technol, State Key Lab Fine Chem, Dalian 116012, Liaoning, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Liaoning, Peoples R China
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GB/T 7714
Zhang, JL,Wang, XP,Cai, TX,et al. Effect of support and acidity of catalyst on direct oxidation of ethylene to acetic acid[J]. CHINESE JOURNAL OF CATALYSIS,2002,23(3):203-206.
APA Zhang, JL,Wang, XP,Cai, TX,Cheng, MJ,&Bao, XH.(2002).Effect of support and acidity of catalyst on direct oxidation of ethylene to acetic acid.CHINESE JOURNAL OF CATALYSIS,23(3),203-206.
MLA Zhang, JL,et al."Effect of support and acidity of catalyst on direct oxidation of ethylene to acetic acid".CHINESE JOURNAL OF CATALYSIS 23.3(2002):203-206.
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