作　　者： ; ; ; ; ; ;

机构地区： 广东工业大学轻工化工学院

出　　处： 《工业催化》 2005年第9期28-32,共5页

摘　　要： 合成了一系列组成为MaSibLacCed(M代表碱金属,a=0～1,b=0～50,c=0～1,d=0～1)的多元氧化物催化剂,在常压条件下评价了其对N-羟乙基吡咯烷酮(NHP)脱水反应活性的影响.研究发现,MaSibLacCed对目标反应的活性随组成而变化,含有稀土的多元氧化物活性较高,双稀土具有相互促进的协同效果.以K1Si50La0.1Ce0.1为催化剂,探讨了反应温度和NHP分压等主要因素对反应的影响,重点研究了低压与N2稀释至常压反应两种方法的效果.结果显示,采用N2稀释至常压反应的方法在技术上更具优势. A series of multinary oxides with formula MaSibLacCed（M = metal element, a = 0～1, b =0～50, c =0～1, d =0～1 ） were prepared and their activity for dehydration of N-hydroxylethyl pyrrolidone（NHP） to N-vinyl pyrrolidone（NVP） were tested under ambient pressure. It was found that activity of MaSibLacCed varied with the composition. Multinary oxides containing rare earth elements （such as La and Ce） showed higher activity, and both La and Ce had coordination effects on each other. Influences of reaction conditions （such as reaction temperature and NHP pressure） were investigated. The route of low pressure dehydration and the route of ambient pressure dehydration via dilution by inlet N2 were compared. The results showed that the route of ambient pressure dehydration via dilution by inlet N2 was technologically advantageous over the former.

关 键 词： 羟乙基吡咯烷酮 催化脱水 乙烯基吡咯烷酮 多元氧化物

领　　域： [化学工程] [化学工程]