摘要
Cubic mesoporous titaniumcontaining silica(TiMCM48) can be synthesized by using mixed surfactants CTABC nHN 2(n=8,10,12,14) as templates in basic medium.Characterization results obtained from the determination of XRD,TEM and N 2adsorption show that the products possess highquality TiMCM48.The effect of the chain length of the alkylamine and the ratio of titanium to silicium on the structure of the cubic mesophases were investigated.It was revealed that the mesophase transition from cubic to lamellar structure occurred with increasing alkylamine chain length and Ti/Si ratio.
Cubic mesoporous titaniumcontaining silica(TiMCM48) can be synthesized by using mixed surfactants CTABC nHN 2(n=8,10,12,14) as templates in basic medium.Characterization results obtained from the determination of XRD,TEM and N 2adsorption show that the products possess highquality TiMCM48.The effect of the chain length of the alkylamine and the ratio of titanium to silicium on the structure of the cubic mesophases were investigated.It was revealed that the mesophase transition from cubic to lamellar structure occurred with increasing alkylamine chain length and Ti/Si ratio.
出处
《物理化学学报》
SCIE
CAS
CSCD
北大核心
2000年第5期385-388,共4页
Acta Physico-Chimica Sinica
基金
国家攀登计划!(97021107)
国家自然科学基金重大项目!(299925904)资助
关键词
混合表面活性剂
含钛氧化硅
分子筛
合成
模板法
Mixed surfactant templating, Cubic structure, Mesoporous titanium-containing silica
