摘要
采用溶胶插入法合成了氧化钛柱层状铌酸,并用XRD、IR、BET和TEM等技术进行了表征。所得层柱材料是多孔性的,包含大量的中孔,其BET比表面积高达131.3m2·g-1(450℃)。另外,材料具有较好的热稳定性,经450℃焙烧后其层间距为1.26nm,经550℃焙烧2h后其层柱结构仍然保持。
Hydrated titanium sol particles-intercalated layered niobate was prepared through the reaction between pi-decylamine-intercalated niobate and hydrated product of tetrabutyl titanate. The titania-pillared layered niobic acid then obtained by calcining the titanium sol particles-intercalated niobate at 450degreesC in air. The resulting material has been characterized by means of XRD, IR, BET surface area and pore size distribution measurement techniques. The pillared sample was porous (mainly mesopores), with a high BET surface area of 131.3m(2) . g(-1) and an interlayer distance of 1.26nm at 450degreesC. Test of thermal stability revealed that the structure of the titania-pillared layered niobic acid was stable after this material calcined at 550degreesC for 2h in air.
出处
《无机化学学报》
SCIE
CAS
CSCD
北大核心
2003年第3期273-277,共5页
Chinese Journal of Inorganic Chemistry
基金
国家自然科学基金资助项目(No.29903005)
南京大学现代分析测试中心资助项目。
关键词
层状铌酸
氧化钛
柱撑
溶胶插入法
layered niobic acid
pillaring
titania
sol-intercalation method
