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首页> 外文期刊>Catalysis science & technology >Shape-controlled synthesis of Cu2O microparticles and their catalytic performances in the Rochow reaction
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Shape-controlled synthesis of Cu2O microparticles and their catalytic performances in the Rochow reaction

机译：Cu2O微粒的形状控制合成及其在Rochow反应中的催化性能

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摘要

We report the preparation of Cu2O microparticles with different shapes, by simple hydrolyzation and reduction of copper acetate with glucose in a mixture of water-ethanol solvent. The effect of the synthesis conditions on the shape of the Cu2O microparticles and their catalytic properties in the Rochow reaction were investigated. The samples were characterized by X-ray diffraction, transmission electron microscopy, scanning electron microscopy, temperature-programmed reduction, and thermogravimetric analysis. Cu2O microparticles with different shapes, such as hexahedron, ananas-like, sphere-like, and star-like shapes, with particle sizes of 2-4 μm, were obtained by tuning the volume ratio of water: ethanol. The hexahedron Cu2O microparticles were found to exhibit the best catalytic performance for the synthesis of dimethyldichlorosilane via the Rochow reaction. This work should be helpful in the design and development of novel copper catalysts for organosilane synthesis and understanding their catalytic roles.
机译：我们报告了具有不同形状的Cu2O微粒，通过简单的水解和在水乙醇溶剂的混合物中用葡萄糖还原和乙酸铜的还原。研究了合成条件对Rochow反应中Cu2O微粒及其催化特性的形状的影响。样品的特征是X射线衍射，透射电子显微镜，扫描电子显微镜，温度编程还原和热重分析。通过调谐水的体积比，获得了具有不同形状的Cu2O微粒，例如六面体，类似于Ananas样，球形和类似星形的形状，粒度为2-4μm。发现六面体Cu2O微粒通过Rochow反应表现出最佳的催化性能，可通过Rochow反应合成二甲基氯硅烷。这项工作应有助于设计和开发有机硅烷合成及其催化作用的新型铜催化剂。

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