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MoBiTeO/SiO_2催化剂在丙烷选择氧化反应中的表面结构重组
Authors
万惠霖
伊晓东
+5 more
何益明
应方
章小兵
翁维正
黄传敬
Publication date
28 February 2007
Publisher
Abstract
考察了MoBiTeO/SiO2催化剂对丙烷选择氧化制丙烯醛的催化性能,并采用原位拉曼、X射线衍射和X光电子能谱等技术研究了催化剂在反应过程中的结构重组及其对催化性能的影响.实验结果表明,反应前,MoBiTeO/SiO2催化剂主要由Te多钼酸盐物种组成;在570℃和C3H8/O2/N2=1.2/1/4的反应条件下,MoBiTeO/SiO2催化剂中的部分Te组分被深度还原为金属Te而流失,使部分Te多钼酸盐物种进行了结构重组形成了MoO3物种.Te多钼酸盐和MoO3之间的协同作用使催化剂的催化性能提高
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Last time updated on 16/06/2016