Liquid phase oxidation of 2-methylnaphthalene to 2-methyl-1,4-naphthoquinone over lanthanum doped MCM-41
Liquid phase oxidation of 2-methylnaphthalene to 2-methyl-1,4-naphthoquinone over lanthanum doped MCM-41
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DOI：
10.1016/j.catcom.2014.01.027
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发表时间：
2014-04
影响因子：
3.7
通讯作者：
Guoli Zi;Daomei Chen;Bin Li;Zhiqiang Li;Xia Luo;Jinping Zhang;Lin Li;Jiaqiang Wang
中科院分区：
文献类型：
--
作者：
Guoli Zi;Daomei Chen;Bin Li;Zhiqiang Li;Xia Luo;Jinping Zhang;Lin Li;Jiaqiang Wang
以过氧化氢水溶液（30%）为氧化剂，乙酸为溶剂，在温和的反应条件下，在掺镧的MCM-41上进行2-甲基萘的液相氧化，不添加任何引发剂。该催化剂在温和的条件下表现出很高的底物转化率(95.8%)和合理的产物(2-甲基-1,4-萘醌)选择性(69.3%)。催化剂快速热过滤实验证明该催化剂为非均相催化剂，可重复使用两次而不会较大程度丧失活性。提出了一种可能的机制。
Liquid phase oxidation of 2-methylnaphthalene was carried out under mild reaction conditions over lanthanum doped MCM-41 using aqueous hydrogen peroxide (30%) as oxidant and acetic acid as solvent without adding any initiator. The catalyst exhibited very high substrate conversion (95.8%) and reasonable product (2-methyl-1,4-naphthoquinone) selectivity (69.3%) under mild condition. Fast hot catalyst filtration experiment proved that the catalyst acted as a heterogeneous one and it can be reused two times without losing its activity to a greater extent. A possible mechanism was proposed.