【摘要】 以乙二胺和 1,2 -丙二醇为原料 ,在 Zn- Mn- Cr/活性炭催化剂上 ,研究了合成 2 -甲基吡嗪的反应温度、原料浓度、原料气空速、还原条件等因素 ,确定了最佳条件 .反应产物经色质联机检测 ,分析了乙二胺和 1,2 -丙二醇制备 2 -甲基吡嗪的反应机理 .在最佳反应条件下 ,2 -甲基吡嗪的收率可达 86.7% .更多还原

【Abstract】 This paper studies the process of the catalytic synthesis of 2 methylpyrazine with ethylenediamine and propylene glycol as raw materials,and Zn Mn Cr/charcoal as catalyst.The reaction conditions,such as the reaction temperature,the amount of water in raw material,the flow rate of raw material,the condition of reduction,were optimized.The reaction products were determined by GC MS.The mechanism of the cyclization of ethylenediamine and propylene glycol to 2 methylpyrazine is 86.7% under the optimized reaction conditions.更多还原