中文摘要：

以无机固体硅胶和硫酸钛为原料，利用无机盐在多孔载体表面自发分散的基本原理，通过热处理先形成具有类似于钛硅分子筛Si—O—Ti键的无机SiO2-TiO2前驱体，然后以四丙基氢氧化铵为模板剂，通过水热晶化成功合成了TS-1分子筛．X射线衍射、傅里叶变换红外光谱和紫外-可见光谱表征表明，SiO2-TiO2前驱体中钛主要呈高分散状态，其中高分散的钛在水热晶化过程中基本进入了TS-1分子筛骨架，而以锐钛矿相存在的钛则基本不变．当SiO2-TiO2前驱体处理温度为450℃，SiO2／TiO2摩尔比为40，晶化温度为160～170℃，晶化时间为48～72h时，合成的TS-1分子筛对苯酚羟基化反应的催化活性最好，与经典有机法合成的TS-1分子筛的催化活性相当．

英文摘要：

An inorganic SiO2-TiO2 precursor having Si-O-Ti bonds similar to those present in titaniumsilicate molecular sieve was prepared through spontaneous dispersion of Ti（SO4）2 on amorphous porous silica by thermal treatment. A TS-1 molecular sieve was then synthesized successfully using the inorganic SiO2-TiO2 precursor by hydrothermal crystallization templated by tetrapropylammonium hydroxide. Characterization using X-ray diffraction, Fourier transform infrared spectroscopy, and ultraviolet-visible absorption spectroscopy showed that a higher proportion of titanium species in the precursor with Si-O-Ti bonds was incorporated into the TS-1 framework during the crystallization process, while the titanium species as a bulk TiO2 phase remained unchanged. Conditions affecting the catalytic performance of TS-1 were investigated in detail. The results indicated that the proper conditions were that the treatment temperature for precursor was about 450 ℃, the molar ratio of silica to titanium was 40, the crystallization temperature was about 160-170 ℃, and the crystallization time was about 48-72 h. TS-1 prepared under the above conditions showed that the activity for hydroxylation of phenol was comparable to TS-1 made by the classical method.