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首页> 外文期刊>RSC Advances >High-performance recyclable V-N-C catalysts for the direct hydroxylation of benzene to phenol using molecular oxygen
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High-performance recyclable V-N-C catalysts for the direct hydroxylation of benzene to phenol using molecular oxygen

机译：高性能可回收的V-N-C催化剂，用于使用分子氧将苯直接羟基化为苯酚

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摘要

In this report, high-performance recyclable V-N-C catalysts for the direct hydroxylation of benzene to phenol using molecular oxygen were designed and prepared. Up to 12.6% yield of phenol with selectivity as high as 97.8% was achieved employing V-N-C-600 catalyst in acetonitrile. The catalytic recycling tests demonstrated that the V-N-C-600 catalyst exhibited high potential for reusability. The catalysts were characterized systematically by thermogravimetric analysis, Fourier transform infrared spectroscopy, N-2 adsorption-desorption, powder X-ray diffraction, Raman spectroscopy, X-ray photoelectron spectroscopy techniques and scanning electron microscopy. It was determined that the interaction between surface nitrogen of the supports and reactive vanadium species played an important role in the excellent stability in recycling of the heterogeneous V-N-C catalysts.
机译：在本报告中，设计并制备了使用分子氧将苯直接羟基化为苯酚的高性能可回收V-N-C催化剂。在乙腈中使用V-N-C-600催化剂，苯酚的收率高达12.6％，选择性高达97.8％。催化循环测试表明，V-N-C-600催化剂具有很高的可重复使用性。通过热重分析，傅立叶变换红外光谱，N-2吸附-脱附，粉末X射线衍射，拉曼光谱，X射线光电子能谱技术和扫描电子显微镜对催化剂进行了系统表征。已经确定，载体的表面氮与反应性钒物种之间的相互作用在非均相V-N-C催化剂的再循环的优异稳定性中起重要作用。

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