二氧化钛如何负载在二氧化硅上？网上例子举不胜举，现给出两例，望楼主有所启发并能够自查文献：【文献一】（1）to obtain the supported tio2/sio2 materials, a solution with the required amount of titanium tetraisopropoxide (ttip) in isopropanol (ttip:i-proh weight ratio = 1:8) to get 20, 40 and 60 tio2 wt% loading was added to each silica support. （2）after stirring the mixture for 45 minutes at room temperature, water was added until a molar ratio 160 h2o:ttip was reached. the stirring was then continued for other 45 minutes. （3）the mixture was centrifuged and the recovered solid was dried at 110 ºc overnight and calcined at 550 ºc for crystallisation. 【文献二】(1) silica??is??suspended in??deionized??water,??to which??an??appropriate amount??of tic13??(merck,??15%??hcl??solution)??is??added??while??the suspension??is??vigorously??stirred??ensuring??a??good homogeneity??during??the precipitation.??(2)then,??the??suspension??is??neutralized??up??to??ph??ca.??7??by??slow??addition of??ammonium??solution.??(3)the??precipitate??is??filtered??and washed??with??deionized??water??several??times. (4)then,??it??is dried??at??373??k??for??12 h and??calcined??at 773??k??in??air??for 12 h. this??procedure??allows??the??deposition??of hydrated ti(iii)??oxide??which??yields??dispersed??tio2??species??on the??silica??surface??after??thermal??treatment，查看更多
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