纳米TiO_2复合载体催化剂的制备及表征  

Preparation and characterization of nano-titania composite-support catalyst

作　　者：赵荣明[1] 詹拥共[1] 蔡炳新[1] 

机构地区：[1]湖南大学化学化工学院,湖南长沙410082

出　　处：《应用化工》2004年第2期32-34,共3页Applied Chemical Industry

摘　　要：采用溶胶 凝胶法分别在γ Al2O3和ZRP 5分子筛上负载纳米TiO2制得复合载体,通过不同的方法在载体上负载纳米V2O5,运用XRD、TEM、IR等对催化剂进行了表征。结果表明:TiO2在载体上分散良好,粒子颗粒均匀,粒径大小在25～35nm之间,TiO2在ZRP 5上粒径比在γ Al2O3小,且Ti Al、Ti Si间存在相互作用,有利于产生新的性能。V2O5粒径大小在8～9nm。The composite supports are prepared from nanosized TiO_2 respectively loaded on γ-Al_2O_3 and ZRP-5 molecular sieve by sol-gel method.Different ways are adopted to load nanosized V_2O_5 on the two composite-supports and catalysts are characterized by XRD?TEM and IR. The results showed that supported TiO_2 had a good dispersion,the size of TiO_2 was between 25～35 nm,the grain size of TiO_2 on the ZRP-5 were smaller than on Al_2O_3.The interaction of Ti-Si and Ti-Al would promote new property.The size of V_2O_5 is about 8～9 nm.

关 键 词：纳米TIO2 复合载体 纳米V2O5 

分 类 号：TQ426.64[化学工程]