Nd-Ti-V催化剂的制备及在均酐制备上的应用  

Study on Formation of Pyromellitic Acid Dianhydride from Durene by Vapor Oxidation on V Ti Nd Catalyst

作　　者：邓国才[1] 穆瑞才[1] 马洪涛[1] 徐莉[1] 陈荣悌[1] 严纯华[2] 卞江[2] 

机构地区：[1]南开大学化学系 [2]北京大学稀土材料化学及应用国家重点实验室

出　　处：《中国稀土学报》1998年第3期280-283,共4页Journal of the Chinese Society of Rare Earths

基　　金：北京大学稀土材料化学及应用国家重点实验室开放基金

摘　　要：采用喷涂法制备了钕改性的钒系／瓷球五元复合氧化物催化剂，实验表明：使用该催化剂，在反应温度４６０±１０℃、空速６０００～８０００ｈ－１、均四甲苯在空气中的浓度２０±３ｇ／ｍ３时，固体粗酐的收率９５％～１００％，产品的质量好，副产物少，易于精制提纯。该催化剂具有重现性好、稳定性高、使用寿命长的特点。The Nd modified V/porcelain ball five component compound oxidate catalyst was prepared. By using the catalyst, at (460±10) ℃, space veiocity 6000～8000 h -1 and durene concentration in air (20±3) g/m 3, the weight yield of crude pyromellitic acid dianhydride is 95%～100%. The product has good quality containing little by product, and it is easy to be refine. The effect of Nd on catalyst was also studied and discussed.

关 键 词：稀土 均四甲苯 均苯四甲酸二酐 钕 催化剂 氧化 

分 类 号：TQ245.23[化学工程—有机化工]