丙烷部分氧化制取丙烯醛Ⅰ.多组份氧化物催化剂的研究

Partial Oxidation of Propane to Acrolein Ⅰ Investigation of Multicomponent Oxide Catalysts

对丙烷氧化制取丙烯醛的多组份氧化物催化剂进行了制备研究和ＴＰＲ、ＸＲＤ表征。结果表明Ｂｉ－Ｖ－Ｍｏ－Ｏ与Ｂｉ－Ｖ－Ｗ－Ｏ催化剂对丙烷氧化制取丙烯醛具有较高的活性与选择性，Ａｇ＋是优良助剂。添加Ａｇ＋调变的Ａｇ－Ｂｉ－Ｖ－Ｍｏ－Ｏ催化剂在４９０℃、０．００４ＭＰａ、３０００ｍｌ／（ｇｃａｔｈ）条件下，丙烷转化率为４６．９％，丙烯醛选择性为５２．８％。ＴＰＲ和ＸＲＤ研究表明。

The multicomponent metal oxide catalysts for partial oxidation of propane to acrolein have been prepared by coprecipitation method The effects of the chemicomponents and preparation methods of catalysts have been investigated and characterized by TPR and XRD techniques Our results showed that Bi V Mo O and Bi V W O catalysts exhibited superior activity and selectivity to desired reaction,and Ag + was a helpful promoter.Under 490℃,0 004MPa and 3000 ml/(gcat·h), the conversion of propane and selectivity of acrolein were 46 9% and 52 8% over Ag Bi V Mo O catalyst respectively XRD analyses as well as TPR studies indicated that Ag Bi V Mo O and Bi V Mo O catalysts which showed advantageous catalytic performance exhibited a scheelite structure