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	WO_3/钛铝胶体系的表面结构(英文); THE SURFACE STRUCTURE OF WO3/TITANIA-ALUMINA SYSTEM
	颜建华 ; 刘英骏 ; 桂琳琳 ; 唐有祺
	1993
关键词	氧化钨 钛铝胶 分散阈值 表面结构 LRS XPS XRD Tungsten oxide Titania-alumina Dispersion threshold Surface structure LRS XPS XRD
英文摘要	WO_2/钛铝胶系列样品通过浸渍法制备.XRD 和XPS 测定结果表明WO_3单层分散在钛铝胶表面,分散阈值为0.22g WO_3/(100m~2).假定WO_3在钛铝胶表面按照密置单层模型分散,其计算值为0.198g WO_3/(100m~2).表明测定值与理论模型的计算值相接近.LRS测定表明:当WO_3的载量低于0.082g WO_3/(100m~2钛铝胶)时,只有四而体配位的钨存在;当WO_3的载量超过0.082g WO_3/(100m~2钛铝胶)时,钨主要以八面体配位存在.同时,LRS的实验结果也表明,550℃焙烧的WO_3/钛铝胶样品没有Al_2(WO_4)_3生成.对高温焙烧条件...; A series of WO3/titania-alumina samples was prepared by impregnation method. The results of XRD and XPS show that WO3 is dispersed as monolayer on the surface of titania-alumina. The dispersion threshold is 0.22g WO3/(100m(2)). It approximately agrees with the value, 0.198g WO3/100m(2)), calculated from the model on assuming that the WO3 is dispersed as a close-packed monolayer on titania-alumina surface. With LRS measurement, it can be found that as the loading of WO3 is lower that 0.082g WO3/(100m(2) titania-alumina), only distorted tetrahedral coordinated tungsten will be located on the surface, however as the loading of WO3 is higher than 0.082g WO3/(100m(2) titania-alumina), octahedral coordinated tungsten dominates. LRS measurements also show no Al-2(WO4)(3) is formed as the WO3/titania-alumina samples were calcinated at 550 degrees C. The formation Al-2(WO4)(3) at higher temperature also has been studied.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000207577300004&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; SCI(E); 中文核心期刊要目总览(PKU); 中国科学引文数据库(CSCD); 2; 01; 13-20; 9
语种	中文
出处	知网 ; SCI
出版者	物理化学学报
内容类型	其他
源URL	[http://hdl.handle.net/20.500.11897/78640]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	颜建华,刘英骏,桂琳琳,等. WO_3/钛铝胶体系的表面结构(英文), THE SURFACE STRUCTURE OF WO3/TITANIA-ALUMINA SYSTEM. 1993-01-01.

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