| 溶胶插入法制备高比表面TiO2柱层状铌酸 | |
| Synthesis of Titania-Pillared Layered Niobic Acid with a High Specific Surface Area by using Sol-Intercalation Method | |
| 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。 | |
| 关键词: 层状铌酸 氧化钛 柱撑 溶胶插入法 | |
| 基金项目: | |
| Abstract: Hydrated titanium sol particles-intercalated layered niobate was prepared through the reaction between n-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 450℃ 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 131.3m2·g-1 and an in-terlayer distance of 1.26nm at 450℃. Test of thermal stability revealed that the structure of the titania-pillared layered niobic acid was stable after this material calcined at 550℃ for 2h in air. | |
| Keywords: layered niobic acid pillaring titania sol-intercalation method | |
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| 郭宪吉,侯文华,孔岩,陆春良,姚天扬,颜其洁.溶胶插入法制备高比表面TiO2柱层状铌酸[J].无机化学学报,2003,19(3):273-277. | |
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