稀土对钒-钛苯酐催化剂活性的影响  

Effect of Addition of Rare Earth Elements on V 2O 5 TiO 2 Catalyst for Phthalic Anhydride

作　　者：邓国才[1] 殷永泉[1] 马洪涛[1] 徐莉[1] 穆瑞才[1] 陈荣悌[1] 

机构地区：[1]南开大学化学系

出　　处：《中国稀土学报》1997年第2期119-122,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基金

摘　　要：在邻二甲苯气相氧化制苯酐的Ｖ２Ｏ５ＴｉＯ２催化剂中，添加少量Ｌａ、Ｐｒ、Ｓｍ或Ｎｄ后，催化剂活性有不同程度的提高。本文应用ＦＴＩＲ研究了氧化反应前后的苯酐催化剂，明显观察到在ＶＴｉ苯酐催化剂中添加稀土后，Ｖ—Ｏ键的吸收峰发生红移，最大红移达到２３５ｃｍ－１。苯酐催化剂加入稀土后，对分子的活化作用与催化剂活性评价的结果是一致的。The effect of addition of rare earth elements(La, Pr, Sm or Nd) on V 2O 5 TiO 2 catalyst for oxidation of o xylene with air to phthalic anhydride(PA) were studied. The activity of the catalyst was developed and V=O bond in FT IR spectroscopy shifts to long wavelength, with the addition of rare earth elements. V Ti Nd catalyst will be the very suitable catalyst for high load of o xylene in air(60 g/m 3) to PA.

关 键 词：钒 钛 催化剂 催化剂活性 稀土元素 苯酐 

分 类 号：O643.361[理学—物理化学] O625.522[理学—化学]