有机氯硅烷高沸物催化裂解材料研究进展

doi:10.11896/cldb.21060166

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Abstract Organosiliconmaterials are widely applied in various fields due to their excellent properties, including moisture-proof, corrosion resistance, high and low temperature resistance, non-toxic and physiological inertia. However, the production process of organosilicon monomers will produce about 7% by-products, and they are mainly composed of organochlorosilane high-boiling residues with complex composition and low commercial value. Inflammable, pungent and strong corrosive organochlorosilane high-boiling residues are greatly harmful to our health and environment. With the increasing productivity of organosilicon monomer, the efficient utilization of organochlorosilane high-boiling residues has become a diffcult problem to be solved urgently. The recycle of organochlorosilane high-boiling residues is mainly achieved through the synthesis of organosilicon downstream products and organosilicon monomers by catalytic cracking method. The catalytic cracking process needs to break the Si-Si bond and Si-C-Si bond in the presence of catalysts and convert high-boiling residues into methylchlorosilane monomers by selecting a suitable blocking reagent. Lewis acids, organic amines, transition metal elements, activated carbon and molecular sieves are main catalysts for catalytic cracking, and their operating conditions and catalytic performance are different. The cracking ratio of organochlorosilane high-boiling residues can reach more than 99%. Nevertheless, the high operation cost and complex production technology limit the further industrial application and popularization. This review article offers a retrospection of research works with respect to the catalytic cracking materials for organochlorosilane high-boi-ling residues, and the materials include aluminum-based compounds, organic amines or quaternary ammonium salts, transition metals, molecular sieves or activated carbon and metallic phosphate catalysts. We have summarized the research status and problems of the above catalysts and analyzed the development prospects. It is expected to provide an available summary for development prospect of catalytic cracking industrialization.

Key words： organochlorosilane high-boiling residues catalytic cracking catalyst industrialization

Published: 30 November 2021

CLC number:

O643.3

Fund:National Key Research and Development Program of China(2019YFC1907601).

About author:: Yuechang Wei received his B.S.and M.S. degrees in Environmental Engineering from University of Jinan in 2005 and 2008, respectively. In 2012, he received his Ph.D. degree in Chemical Engineering and Technology from China University of Petroleum (Beijing). After postdoctoral research of one-year at the University of Kansas in 2015, he is currently a full professor in China University of Petroleum (Beijing). His research inte-rests are environmental catalysis in the process of petroleum processing and utilization, including oxidation and elimination catalysts of motor vehicle exhaust PM and catalysts of photocatalytic reduction of CO₂. In recent years, he has published more than 140 papers in the field of Environmental Catalysis, including Energy & Environmental Science、Acs Catalysis、Applied Catalysis B:Environmental、Angewandte Chemie International Edition、Journal of the American Chemical Society and Journal of Catalysis, etc.
Kezhen Lai received her B.S. degree in Applied Che-mistry from Hunan Agriculture University in 2019. She is currently pursuing her M.E. at the College of Science, China University of Petroleum (Beijing) under the supervision of Prof. Yuechang Wei. Her research has focused on catalytic cracking of chlorosilane high-boiling residues.

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	WEI Yuechang
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Cite this article:

WEI Yuechang,LAI Kezhen,XIONG Jing, et al. Research on Advances of Catalytic Cracking Materials for Organochlorosilane High-boiling Residues[J]. Materials Reports, 2021, 35(21): 21022-21027.

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http://www.mater-rep.com/EN/10.11896/cldb.21060166 OR http://www.mater-rep.com/EN/Y2021/V35/I21/21022

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