Direct reaction between silicon and methanol over Cu-based catalysts: investigation of active species and regeneration of CuCl catalyst

作者：Wang, Aili; Zhang, Mingming; Yin, Hengbo^*; Liu, Shuxin; Liu, Mengke; Hu, Tongjie

来源：RSC Advances, 2018, 8(34): 19317-19325.

DOI：10.1039/c8ra03125h

• COPPER(I) CHLORIDE
• PHASE HYDROGENATION
• TRIMETHOXYSILANE
• METHOXYSILANES
• ALCOHOL
• OXALATE

When a CuCl/Si mixture was pretreated at 200-240 degrees C in a N-2 atmosphere, trimethoxysilane was predominantly formed in the direct reaction of silicon with methanol. When the pretreatment temperatures were raised to 260-340 degrees C, tetramethoxysilane was favorably formed. The CuxSiyClz species catalyzed the reaction between silicon and methanol to trimethoxysilane. Chlorination of the spent CuCl/Si mixture promoted the reaction between silicon and methanol to form both trimethoxysilane and tetramethoxysilane due to the recovery of the CuCl phase and the exposure of the metallic Cu-0 phase. When Cu2O, CuO, and Cu-0 were used as the catalysts, tetramethoxysilane was formed as the main product.

• 出版日期2018
• 单位绵阳师范学院; 江苏大学