研究了乙酸溶剂中无引发剂条件下,Co掺杂MCM-41催化过氧化氧(30%)氧化4-甲基吡啶的反应,催化剂表现出高底物转化率和产物吡啶甲酸选择性以及良好的再生性.探讨了不同溶剂、反应时间、反应温度、催化剂用量等对H2O2氧化4-甲基吡啶反应的影响,确定较优反应条件为m(4-甲基吡啶):m(催化剂)=10:1,V(4-甲基吡啶):V(冰醋酸)=1:10,温度363 K,时间6 h.该条件下4-甲基吡啶的转化率为96.5%,4-吡啶甲酸的选择性为91.4%.探讨了可能的反应机理.
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