Selective oxidation of alcohols using novel crystalline Mo-V-O oxide as heterogeneous catalyst in liquid phase with molecular oxygen
Selective oxidation of alcohols using novel crystalline Mo-V-O oxide as heterogeneous catalyst in liquid phase with molecular oxygen
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DOI：
10.1016/j.cattod.2008.12.034
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发表时间：
2009-06-30
期刊：
影响因子：
5.3
通讯作者：
Ueda, Wataru
中科院分区：
文献类型：
--
作者：
Wang, Feng;Ueda, Wataru
以新型晶态Mo-V-O氧化物为催化剂，在温和条件下进行了苯甲醇的分子氧催化选择氧化反应。本论文主要研究了晶态氧化物在液相反应中的回收、再利用和稳定性问题。Mo-V-O氧化物催化剂至少使用4次，其活性与新鲜催化剂相当。催化剂从反应介质中分离可以停止苯甲醇的转化，向反应介质中加入催化剂可以立即触发反应。以2，3，6-三甲基苯酚的催化氧化为参比反应，结果表明反应混合物中没有活性物种的浸出。经电感耦合等离子体质谱分析、X射线衍射和扫描电子显微镜表征，证实了催化剂的结构和组成是稳定的。此外，Mo-V-O氧化物还能高选择性地催化一系列醇的氧化生成相应的羰基化合物。(C)2009爱思唯尔B.V.保留所有权利。
Catalytic selective oxidation of benzyl alcohol with molecular oxygen under mild conditions was carried out over novel crystalline Mo-V-O oxide. The present research is focused on investigation of recycling, reusability and stability of the crystalline oxide in the liquid-phase reaction. The Mo-V-O oxide catalyst was used at least four times with comparable activities to that of fresh catalyst. The separation of the catalyst from reaction medium can stop the conversion of benzyl alcohol, and the addition of the catalyst to the reaction medium can trigger the reaction immediately. The catalytic oxidation of 2,3,6-trimethylphenol as a reference reaction suggested that there were no leached active species in the reaction mixture. The results of the ICP-MS analysis, XRD, and SEM characterization confirmed that the structure and composition of the catalyst were stable. Besides, the Mo-V-O oxide can catalyze the oxidation of a series of alcohols with high selectivities for corresponding carbonyl compounds. (C) 2009 Elsevier B.V. All rights reserved.