文献类型：期刊文献

中文题名：两步水解法制备条件对TiO_2/SiO_2混合氧化物孔结构的影响

英文题名：The Influence of Preparation Conditions of the Two Step Hydrolysis Method on Pore Structure

作者：秦俊岭[1];杨景辉[1];陈雪梅[1];於定华[1]

机构：[1]国家超细粉末工程研究中心华东理工大学,上海200237

年份：2004

卷号：45

期号：7

起止页码：339

中文期刊名：化学世界

外文期刊名：Chemical World

收录：北大核心:【北大核心2000】；CSCD:【CSCD2011_2012】；

基金：科技部基础研究重大项目前期研究专项基金资助(CCA0034000)

语种：中文

中文关键词：两步水解法;TiO2/SiO2混合氧化物;孔结构

外文关键词：two step hydrolysis method; TiO_2/SiO_2 composite; pore structure

摘要：采用两步水解法制备了高比表面积的TiO2/SiO2混合氧化物,利用TGA和低温N2的吸附对粉体进行了表征。研究了预水解阶段加水量及醇洗、水洗过程对粉体孔结构的影响,发现加水量较少时,孔径分布变宽,水洗样品的比表面积和孔径均比醇洗样品的大。
The TiO_2/SiO_2 composite with high specific surface area was prepared by a two step hydrolysis method. The structure of the samples is analysed by TGA and low temperture N_2 absorption-desorption method. The influence of the prehydrolysis step with different water amount and the washing with water or ethanol on pore structure is studed. The experimental results show that the pore size distrubition is wide when the water amount is large. In addition, the specific surface area and average pore size of samples washed with water are larger than those washed with ethanol.