制备高比表面多孔Ti-Si复合氧化物材料的新方法  

A New Method for Preparing Porous Ti-Si Dioxide Composite with High Surface Area

作　　者：赵敬哲[1] 杨少凤[1] 王子忱[1] 沙晓祥[1] 赵慕愚[1] 单志军[2] 丁世洲 

机构地区：[1]吉林大学化学系,长春130023 [2]白求恩医科大学附属卫校,长春130023 [3]吉林化学工业公司长松化工厂,吉林132021

出　　处：《高等学校化学学报》2000年第2期292-294,共3页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金!(批准号:29573105)资助

摘　　要：A new method named peptizinggelation method was used to synthesize TiSi dioxide composite, whose surface area is above 1 000 m2/g. The character of this method is that Ti exists in the form of ion and ion cluster during the hydrolysis of Si(OC 2H 5) 4 . This is the progress on the cohydrolysis of Si(OC 2H 5) 4 and Ti(OC 4H 9) 4. During the calcination of gelation, Ti—O—Si was formed with Ti element in the situation of SiO 2 crystal cell. This is confirmed by FTIR analysis. TiSi dioxide composite with Ti molar fraction of 13.1% is mainly in the form of amorphous based on XRD analysis, which reveals that TiSi dioxide composite is uniform in structure. Furthermore, extra Ti element presents on the surface layer of TiSi dioxide composite examined by Raman and EES analysis. Owning to these two characters, TiSi dioxide composite prepared by peptizinggelation method becomes a good catalyst in the field of catalysis.A new method named peptizinggelation method was used to synthesize TiSi dioxide composite, whose surface area is above 1 000 m2/g. The character of this method is that Ti exists in the form of ion and ion cluster during the hydrolysis of Si(OC 2H 5) 4 . This is the progress on the cohydrolysis of Si(OC 2H 5) 4 and Ti(OC 4H 9) 4. During the calcination of gelation, Ti—O—Si was formed with Ti element in the situation of SiO 2 crystal cell. This is confirmed by FTIR analysis. TiSi dioxide composite with Ti molar fraction of 13.1% is mainly in the form of amorphous based on XRD analysis, which reveals that TiSi dioxide composite is uniform in structure. Furthermore, extra Ti element presents on the surface layer of TiSi dioxide composite examined by Raman and EES analysis. Owning to these two characters, TiSi dioxide composite prepared by peptizinggelation method becomes a good catalyst in the field of catalysis.

关 键 词：胶溶-凝胶法 钛硅复合氧化物 多孔材料 

分 类 号：TQ427.26[化学工程] TB333[一般工业技术—材料科学与工程]