A new method for preparing porous Ti-Si dioxide composite with high surface area

A new method named peptizing-gelation method was used to synthesize Ti-Si d ioxide composite, whose surface area is above 1 000 m(2)/g, The character o f this method is that Ti exists in the form of ion and ion cluster during t he hydrolysis of Si(OC2H5)(4). This is the progress on the cohydrolysis of Si(OC2H5)(4) and Ti(OC4H9)(4). During the calcination of gelation, Ti-O-Si was formed with Ti element in the situation of SiO2 crystal cell. This is c onfirmed by FT-IR analysis, Ti-Si dioxide composite with Ti molar fraction of 13. 1% is mainly in the form of amorphous based on XRD analysis, which r eveals that Ti-Si dioxide composite is uniform in structure, Furthermore, e xtra Ti element presents on the surface layer of Ti-Si dioxide composite ex amined by Raman and EES analysis, Owning to these two characters, Ti-Si dio xide composite prepared by peptizing-gelation method becomes a good catalys t in the field of catalysis.