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化工学报 2004年第1期55卷 138-142页

作者：曲济方方莉武志刚山西大学化学化工学院山西太原030006

Ultra fine so 2- 4/tio 2-sio 2 complex catalysts were synthesized by the one-step calcination method,which used titania sulfate and white carbon as raw materials and polyvinyl alcohol as dispersing agent. Catalysts are characterized by XRDIRTDA and BET. Different preparation factors were *** catalysts consisting of so 2- 43.4% and tio 2∶sio 2=1∶6 showed excellent reaction activity and stability for the photocatalytic degradation of *** calcination temperature and time (450℃,2h) could avoid or diminish the formation of Ti-O-Si bond and obtain higher V g and better dispersivity of tio 2 on the surface of sio *** kinetic study on photocatalytic degradation of phenol with the complex catalysts in a suspension system under 40W UV-lamp showed that apparent rate constant k conformed to a zero-order kinetic model at initial concentration solution up to pH=*** pH=10,k=3.32×10 -1 mg·L -1 ·min -1 . solar photocatalytic experiment also gave good results.

关键词： so4^2-/tio2-sio2 光催化苯酚降解直接焙烧法

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so_4^(2-)/tio_2-sio_2固体超强酸的结构及其光催化性能

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高等学校化学学报 2002年第7期23卷 1398-1400页

作者：苏文悦陈亦琳付贤智魏可镁福州大学光催化研究所福州350002

A series of so 2- 4/tio 2 sio 2 catalysts with different mass fractions of sio 2 were prepared by sol gel method. The effect of adding sio 2 on the crystal structure, specific surface area, oxygen adsorption, and acidity of so 2- 4/tio 2 catalyst and its photocatalytic property for degradation of bromomethane was studied. The results showed that the specific surface area and amount of oxygen adsorption of catalyst were increased by addition of sio 2, leading to the obvious increase on photocatalytic activity of so 2- 4/tio 2 sio 2 catalysts and mineralization ratio of bromomethane. Comparing with so 2- 4/tio 2, the acidic strength and anti moisture ability of so 2- 4/tio 2 sio 2 catalyst were decreased.

关键词：结构光催化性能固体超强酸 so4^2-/tio2-sio2 二氧化钛二氧化硅硫酸

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固体超强酸so_4^(2-)/tio_2-sio_2催化合成马来酸二辛酯

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化工进展 2002年第4期21卷 266-269页

作者：华平沙兆林李建华南通工学院化工系南通226007

用H2 so4浸渍钛硅复合氧化物 ,制得固体超强酸so2 -4/tio2 -sio2 ,考察了催化剂对马来酸酐与正辛醇的酯化反应的催化作用及其制备条件对催化剂活性的影响 ,并与硫酸、对甲苯磺酸的催化效果比较。结果表明 :对于给定反应 ,当n(Ti)∶n(Si)... 详细信息

用H2 so4浸渍钛硅复合氧化物 ,制得固体超强酸so2 -4/tio2 -sio2 ,考察了催化剂对马来酸酐与正辛醇的酯化反应的催化作用及其制备条件对催化剂活性的影响 ,并与硫酸、对甲苯磺酸的催化效果比较。结果表明 :对于给定反应 ,当n(Ti)∶n(Si)为 15∶1、用浓度 0 .6mol/L的硫酸浸渍 8h、在 5 5 0℃下焙烧 3h时制得的催化剂so2 -4/tio2 -sio2 具有最高的催化活性 ;用以催化马来酸酐和正辛醇的酯化反应 ,可得无色透明的酯化产物 ,3h内酯化率达 99.1% ;较so2 -4/tio2 催化剂的酯化率提高了约 6 %

关键词：固体超强酸 so4^2-/tio2-sio2 催化合成马来酸二辛酯催化剂

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