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Thesis Advisor苏发兵
Degree Grantor中国科学院研究生院
Place of Conferral北京
Degree Discipline化学工程
Keyword直接合成反应 二甲基二氯硅烷 铜催化剂 部分氧化


Other Abstract

Organosilicon materials have unique organic and inorganic hybrid properties, which are widely used in many fields such as the bio-medicine, electronics, aerospace, automotive, electrical, cable, solar energy and other fields. Methylchlorosilanes are the most important initial reagents for preparing the organosilicon materials and in which dimethyldichlorosilane is the main sector. It is demonstrated that the direct synthetic reaction is the most economical and effective process for preparing dimethyldichlorosilane. Under the Cu-based catalysts, silicon powder reacts with methyl chloride (CH3Cl) gas in one step, so the copper catalyst is the key problem for this process. Nowadays, the Cu-Cu2O-CuO catalyst technology in domestic is following the world, and the manufacture demands mainly depend on the import, leading to the high cost and technical limitation. So it is necessary to pay more attention on the preparation of low cost and high selectivity catalysts.This work, based on the Rochow reaction, different structures of ternary Cu-based catalysts were prepared by copper powder partial oxdation and copper oxide powder partial reduction. During the process, particle size, surface morphology and composition were investigated. The morphology and composition of the samples were investigated by particle size analysis, scanning electron microscopy(SEM), X-ray diffraction(XRD), temperature-programmed reduction(H2-TPR) and X-ray fluorescence spectrometry(XRF). Furthermore, the catalytic performance of the obtained copper catalyst was also characterized. The results shown the catalyst obtained by the two process routes performed a good selectivity for dimethyldichlorosilane and Si conversion, and the catalytic efficiency was significantly improved, which is more excellent than the imported one. Finally, the process based on partial oxidation of copper powder is facile for operation and has much potential in future. 

Document Type学位论文
Recommended Citation
GB/T 7714
韩振藏. 有机硅单体合成高效三元铜催化剂的研究[D]. 北京. 中国科学院研究生院,2016.
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有机硅单体合成高效三元铜催化剂的研究.p(2322KB)学位论文 限制开放CC BY-NC-SAApplication Full Text
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