Effect of support and acidity of catalyst on direct oxidation of ethylene to acetic acid

	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
刊名	chinese journal of catalysis
	2002-05-01
卷号	23 期号:3 页码:203-206
关键词	palladium acid silica activated carbon acid clay supported catalyst ethylene oxidation acetic acid
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.
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
收录类别	SCI
语种	英语
WOS记录号	WOS:000176236500004
公开日期	2015-11-10
内容类型	期刊论文
源URL	[http://159.226.238.44/handle/321008/139045]
专题	大连化学物理研究所_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
推荐引用方式 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.