Acta Phys. -Chim. Sin. ›› 2005, Vol. 21 ›› Issue (06): 653-657.doi: 10.3866/PKU.WHXB20050615

• ARTICLE • Previous Articles     Next Articles

The Reaction Mechanism for the Synthesis of 1-methoxy-2-propanol on MgO Catalyst

ZHANG Wen-yu; DONG Qing-nian; ZHAO Ning; WEI Wei; SUN Yu-han   

  1. State Key Laboratory of Coal Conversion, Shanxi Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001; Graduate School of the Chinese Academy of Sciences, Beijing 100049
  • Received:2004-12-20 Revised:2005-01-25 Published:2005-06-15
  • Contact: SUN Yu-han E-mail:yhsun@sxicc.ac.cn

Abstract: The addition of propylene oxide with methanol was carried out over MgO and a detailed mechanism of the reaction was investigated by using FT-IR method. In-situ FT-IR revealed that methanol dissociation into methoxide and proton took place readily on MgO, and propylene oxide adsorbed on MgO could generate propylenelike species via carbanion intermediate. As a result, methanol dissociated into adsorbed methoxide and reacted with the propylenelike species in antiMarkownikov fashion, which led to the high selectivity to 1-methoxy-2-propanol on MgO.

Key words: Methanol, Poropylene oxide, IR, 1-methoxy-2-propanol, MgO