对叔丁基甲苯选择性氧化制对叔丁基苯甲醛催化剂研究--助剂T1的添加对催化剂结构及反应性能的影响

对叔丁基苯甲醛是香精香料及其它食用化工行业的重要原料 ,采用对叔丁基甲苯气相选择性氧化制对叔丁基苯甲醛可以克服对叔丁基苯甲醛生产过程中设备腐蚀严重、污染环境、工艺落后繁琐等缺点 ,所以一直是广大科技工作者十分关注的研究课题。迄今为止 ,国内外学者已有不少关于甲苯气相选择性氧化制苯甲醛的报道1～ 3] ,但关于对叔丁基甲苯选择性氧化制对叔丁基苯甲醛的研究几乎未见报道。本文考察了在Ｖ -Ｃｓ -Ｃｕ体系催化剂上引入助剂Ｔ1后对催化剂反应性能的影响 ,结果发现助剂Ｔ1的添加对于提高对叔丁基苯甲醛的选择性具有明显的促进作…

STUDY ON CATALYSIS FOR SELECTIVE OXIDATION OF P-TERT BUTYL TOLUENE TO P-TERT BENZALDELYDE EFFECT OF THE PROMOTER T1 ON THE STRUCTURE AND REACTION PROPERTIES OF CATALYSTS

A series of VCsCuT1 catalysts were prepared by impregnation method The activity and selectivity of the catalysts for selective oxidation of p-tert butyl toluene to p-tert benzaldelyde were studied The effect of different ratio of T1 on the structure and catalytic properties of the catalysts were investigated by means of XRD and IR technology The results indicated that the additive of T1 could obviously raise the selectivity of reaction On V-Cs-Cu-T1 catalyst, the excellent result that conversion of p-tert butyl toluene and the selectivity of p-tert benzaldelyde reach about 12mol% and 85mol% respectively were gained After running 365 h, the catalyst still possesses good catalytic activity