【作者】 周利民； 王一平； 刘峙嵘；

【Author】 ZHOU Li-min~(1,2) WANG Yi-ping~2 LIU Zhi-rong~1 (1.Key Laboratory of Nuclear Resources and Environment (East China Institute of Technology),Ministry of Education,Fuzhou 344000,China;2.School of Chemistry and Chemical Engineering,Tianjin University,Tianjin 300072,China)

【机构】 东华理工学院核资源与环境教育部重点实验室； 天津大学化工学院；

【摘要】 采用溶胶-凝胶法制备纳米 RiO₂/Al₂O₃,考察了陈化温度及络合比对 TiO₂/Al₂O₃比表面积及孔结构参数的影响．结果表明,TiO₂/Al₂O₃平均粒径＜70nm, 比表面积超过210m²/g,平均孔径0．8～1．4nm．适当降低陈化温度及加络合剂有利于 TiO₂/Al₂O₃粒子的分散。 Al₂O₃的存在提高了 TiO₂/Al₂O₃的热稳定性．更多还原

【Abstract】 TiO₂/Al₂O₃ composite nanoparticles were prepared by sol-gol method.The effect of sol aging temperature and complexing ratio on the specific surface area and pore structure parameters of TiO₂/Al₂O₃ was studied.The results showed that TiO₂/Al₂O₃ had the mean diameter of less than 70nm,specific surface area superior to 210m²/g and the pore size range of 0.8-1.4nm.The decrease of aging temperature and the addition of complexing ligand favored the dispersion of TiO₂/Al₂O₃ particles.The thermal stability of TiO₂/Al₂O₃ was improved in the presence of Al₂O₃.更多还原