负载镧固体超强酸SO_4^(2-)/TiO_2催化合成DBS  

Synthesis of DBS by Lanthanum Solid Super Acid SO_4^(2-)/TiO_2

作　　者：陈淑芬[1] 甘黎明[1] 史文权[1] 杨兴楷[1] 索陇宁[1] 马利海[1] 

机构地区：[1]兰州石化职业技术学院石油化学工程系,甘肃兰州730060

出　　处：《兰州石化职业技术学院学报》2008年第2期1-3,共3页Journal of Lanzhou Petrochemical Polytechnic

基　　金：甘肃省科学技术厅攻关项目(2GS035-A52-008-04);甘肃省教育厅科研资助项目(0414-05)

摘　　要：将SO42-/TiO2负载镧制备了新型催化剂SO42-/La2O3-TiO2以癸二酸和正丁醇的酯化反应为探针,考察了不同制备条件对催化剂性能的影响,结果表明:La3+浸渍浓度为0.07 mol/L,经110℃烘干后于500℃焙烧3h所得催化剂活性最好。采用正交实验法对影响酯化反应的因素进行考察,最佳实验条件为n(醇)∶n(酸)=4∶1,反应时间3h,催化剂用量1.5%(总物料),酯化率可达96.5%。且该催化剂具有良好的重复使用和再生能力。A new type solid super acid catalyst with the composition of SO4^2-/TiO2 and added lanthanum was prepared by precipitation and impregnation. The esterification of sebacic acid and n - butanol over the catalyst was studied. The influences of preparation conditions on its catalytic properties were studied. The highest esterification yield was exhibited under the conditions of impregnation 0.07mol/L La2 （ SO4 ）^ 3, dryed at 110℃, calcinations at 500℃ for 3 h . The influence factors were investigated by experiment arranged by orthogonal design for esterification. The best condition was that n（alcohol） -n（acid） was 4：1 , reaction time was 3h, catalyst amount was 1.5% （ the total mass of reactants） and esterification yield of dibutyl sebacate was about 96.5%. And the catalyst was reused and regenerated.

关 键 词：镧 固体超强酸 酯化 癸二酸二丁酯 

分 类 号：TQ225.24[化学工程—有机化工]