铈钼氧化物对甲苯气相选择氧化制苯甲醛的催化性能

SELECTIVE CATALYTIC OXIDATION OF TOLUENE TO BENZALDEHYDE OVER Ce Mo OXIDE CATALYSTS

研究了一系列铈钼复合氧化物对甲苯选择性氧化制苯甲醛反应的催化性能．结果表明，当Ｃｅ／Ｍｏ比为２／１，温度为４５０℃，空气／甲苯比为１０时，反应活性最好．采用ＸＲＤ，ＩＲ，ＸＰＳ和Ｈ２ＴＰＲ等技术对该样品的组成、结构、表面状态以及氧化还原性质进行了表征．

A series of Ce Mo oxide catalysts with different Ce/Mo atomic ratios were prepared and applied to selective oxidation of toluene to benzaldehyde. The best catalytic activity result of 14 3% benzaldehyde yield could be attained with sample n (Ce) / n (Mo)=2 when the measured temperature was 450℃ and the air/toluene ratio was 10. The structure and the surface properties of catalysts were characterized by XRD, IR, XPS and H 2 TPR methods.