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丙烷选择氧化反应中钼基催化剂动态结构的研究
Authors
万惠霖
伊晓东
+3 more
张昕
毕盈
翁维正
Publication date
29 March 2002
Publisher
Abstract
用原位共焦显微拉曼光谱技术考察了丙烷选择氧化反应中Ag Mo P O催化剂的结构 ,讨论了催化剂动态结构的成因及其对催化剂性能的影响 .实验结果表明 ,在 773K和n(C3H8) ∶n(O2 ) ∶n(N2 ) =3∶1∶4的反应条件下 ,Ag Mo P O催化剂中的Mo O物种可转化为AgMoO2 PO4中的Mo O物种 (多钼酸根 ) ,此时催化剂对丙烷选择氧化具有较高的催化活性 .催化剂中Mo O物种的转化是由MoO3 中Mo O物种和AgMoO2 PO4中Mo O物种的结构特性决定的 .AgMoO2 PO4中的Mo O物种具有较强的参与MarsvanKrevelen氧化 还原循环的能力 ,可能是丙烷选择氧化反应的活性物
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Last time updated on 16/06/2016