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首页> 外文期刊>Polyhedron: The International Journal for Inorganic and Organometallic Chemistry >Heterogeneous catalytic oxidation of styrene by an oxo bridged divanadium(V) complex of an acetohydrazide-Schiff base
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Heterogeneous catalytic oxidation of styrene by an oxo bridged divanadium(V) complex of an acetohydrazide-Schiff base

机译：乙酰肼-席夫碱的羰基桥联二价（V）络合物对苯乙烯的非均相催化氧化

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摘要

We have synthesized a l-oxido divanadium compound [(VOL)_2(l-O)] with an aliphatic hydrazone ligand LH_2 = (E)-N'-(1-(2-hydroxyphenyl)ethylidene)acetohydrazide. The complex was characterized by elemental analysis, IR and UV-Vis spectroscopy and the molecular structure was established by single crystal X-ray diffraction technique. The complex has been infused over alumina to prepare a heterogeneous catalyst which was characterized by IR spectroscopy, thermogravimetric and powder XRD analyses. The catalyst has been studied for the oxidation of styrene in presence of H_2O_2 and appears to be easily recyclable. A conversion of 99.7% and selectivity of 88.1% for benzaldehyde formation and a turnover number of 1354 was detected under the most favorable reaction conditions.
机译：我们已经合成了具有脂肪族L配体LH_2 =（E）-N'-（1-（2-羟苯基）亚乙基）乙酰肼的L-氧化二钒化合物[（VOL）_2（1-O）]。通过元素分析，IR和UV-Vis光谱对复合物进行表征，并通过单晶X射线衍射技术确定其分子结构。该配合物已注入氧化铝中以制备非均相催化剂，该催化剂通过红外光谱，热重分析和粉末XRD分析进行了表征。已经研究了该催化剂用于在H_2O_2存在下氧化苯乙烯，并且似乎易于回收利用。在最有利的反应条件下，检测到苯甲醛形成的转化率为99.7％，选择性为88.1％，周转数为1354。

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