SnO_2负载硅钨杂多酸盐的制备及催化性能研究  

Study on Preparation and Catalytic Performance of SnO_2 Loaded Silicotungstic Acid Complex

作　　者：白丽梅[1] 刘思晗 乌英嘎[1] 谢立娟[1] 王斌[1] 刘宗瑞[1] 

机构地区：[1]内蒙古民族大学化学化工学院,内蒙古通辽028043

出　　处：《湖北民族学院学报（自然科学版）》2015年第3期326-329,共4页Journal of Hubei Minzu University(Natural Science Edition)

基　　金：国家自然科学基金项目(21261014);内蒙古自然科学基金项目(2012MS0207);内蒙古民族大学硕士研究生科研创新基金项目(NMDSS1422)

摘　　要：制备固载型αK_5H[SiW_(11)Zn(H_20)O_(39)]·15H_2O/SnO_2催化剂,并用IR、XRD对其结构进行了表征.探讨了醇酸摩尔比、催化剂用量、反应时间、带水剂用量等因素对乳酸丁酯酯化率的影响.实验结果表明:在醇酸摩尔比为1.5、50%α-SiW_(11)Zn/SnO_2用量为0.4g、反应时间4h、带水剂用量为13mL时,酯化率可以达到90.0%,且催化剂重复使用性能良好.The supported catalysts αK5H[SiW11Zn（H20）O39]·15H2O/SnO2 were prepared by dipping method and characterized by IR and XRD spectrum.The effect of mole ratio of butanol and lactic acid, a- mount of catalyst, reaction time and volume of cyclohexane on esterification rate of butyl lactate was studied. The esterification rate can be more than 90.0% when mole ratio of butanol and lactic acid was 1.5, amount of 50% α-SiW11Zn/SnO2 was 0.4 g, reaction time was 4 h,volume of cyclohexane was 13 mL. More importantly, the catalyst displayed fine recyclable property.

关 键 词：硅钨酸盐 二氧化锡 乳酸丁酯 

分 类 号：O643.3[理学—物理化学]