引用本文:
张文郁, 董庆年, 赵宁, 魏伟, 孙予罕. 环氧丙烷和甲醇在M 上合成1-甲氧基-2-丙醇反应机理[J]. 物理化学学报,
2005, 21(06): 653-657.
doi:
10.3866/PKU.WHXB20050615
Citation: ZHANG Wen-yu, DONG Qing-nian, ZHAO Ning, WEI Wei, SUN Yu-han. The Reaction Mechanism for the Synthesis of 1-methoxy-2-propanol on M Catalyst[J]. Acta Physico-Chimica Sinica, 2005, 21(06): 653-657. doi: 10.3866/PKU.WHXB20050615
Citation: ZHANG Wen-yu, DONG Qing-nian, ZHAO Ning, WEI Wei, SUN Yu-han. The Reaction Mechanism for the Synthesis of 1-methoxy-2-propanol on M Catalyst[J]. Acta Physico-Chimica Sinica, 2005, 21(06): 653-657. doi: 10.3866/PKU.WHXB20050615
环氧丙烷和甲醇在M 上合成1-甲氧基-2-丙醇反应机理
摘要:
应用原位FT-IR详细研究了M 上甲醇对环氧丙烷的加成反应. 结果表明在M 催化剂上甲醇很易解离吸附形成甲氧基, 根据负碳离子机理, 吸附环氧丙烷可形成类丙烯物种. 甲氧基对类丙烯物种的加成反应遵循反-Markownikov法则, 高选择性地合成1-甲氧基-2-丙醇.
English
The Reaction Mechanism for the Synthesis of 1-methoxy-2-propanol on M Catalyst
Abstract:
The addition of propylene oxide with methanol was carried out over M 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 M , and propylene oxide adsorbed on M 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 M .
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