Aerobic Oxidation of Benzyl Alcohol over Activated Carbon Supported Manganese and Vanadium Catalysts: Effect of Surface Oxygen-Containing Groups
Aerobic Oxidation of Benzyl Alcohol over Activated Carbon Supported Manganese and Vanadium Catalysts: Effect of Surface Oxygen-Containing Groups
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DOI：
10.1007/s10562-010-0447-4
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发表时间：
2011-01-01
影响因子：
2.8
通讯作者：
Su, Fabing
中科院分区：
文献类型：
--
作者：
Chen, Yuanting;Chen, Wan;Su, Fabing
本文研究了负载型锰、钒催化剂上分子氧选择氧化苯甲醇的反应。活性炭载体材料经预氧化处理后，其催化活性明显提高。通过氮气物理吸附、X射线衍射、透射电镜和X射线吸收等表征手段考察了催化剂的物化性能。通过排除比表面积、活性中心分散度、Mn和V活性物种的价态和局部配位等因素的影响，将催化活性的提高归因于活性炭载体表面含氧基团的种类和密度的增加，并通过循环伏安法和傅里叶变换红外光谱法进一步证实了这一点。
In this contribution, the selective oxidation of benzyl alcohol using molecular oxygen over supported manganese and vanadium catalysts was investigated. The catalytic activities were significantly improved after pre-oxidizing the activated carbon support materials. Characterizations of nitrogen physisorption, X-ray diffraction, transmission electron microscopy, and X-ray absorption were involved to examine the physicochemical properties of as-prepared catalysts. By ruling out the effects of specific surface area, active site dispersion, valence and local coordination of Mn and V active species, the improved catalytic activity was attributed to the specific variety and increased density of oxygen-containing groups on activated carbon support surfaces, which was further confirmed by cyclic voltammetry measurements and Fourier transform infrared spectroscopy.