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Received March 6, 2011
Accepted April 25, 2011
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Methylation of methyltrichlorosilane with methyl chloride over active metals and activated carbon
Yanjun Liu
Yiqian Jiang
Hengbo Yin†
Weiguang Chen
Yutang Shen
Yonghai Feng
Lingqin Shen
Aili Wang
Tingshun Jiang
Zhanao Wu
Faculty of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China
Korean Journal of Chemical Engineering, December 2011, 28(12), 2250-2254(5), 10.1007/s11814-011-0114-5
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Abstract
Gas phase methylation of methyltrichlorosilane with methyl chloride to high-valued dimethyldichlorosilane was carried out by using metallic aluminum as a chlorine acceptor in the co-presence of activated carbon, tin, and zinc. The addition of activated carbon in metallic aluminum significantly enhanced the methylation of methyltrichlorosilane, and dimethyldichlorosilane was dominantly produced. Activated carbon played a catalyst role in the methylation reaction. When active metals, such as tin and zinc, were added in the mixture of aluminum and activated carbon, the active metals and activated carbon synergistically catalyzed the methylation of methyltrichlorosilane with methyl chloride toward the formation of dimethyldichlorosilane.
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