环氧丙烷与乙二胺合成2-甲基吡嗪的研究

摘要本文研究了以乙二胺和环氧丙烷为原料,经气固相接触催化合成2-甲基吡嗪的新工艺。试验中采用自制的复合催化剂,最佳工艺条件为:预热温度260℃,反应温度380℃,原料环氧丙烷和乙二胺摩尔比为1 2∶1,流量为6mL h,反应过程中氢气、氮气流量均为4L h。2-甲基吡嗪的反应收率大于89%(质量分数),经分离得到纯度大于99%(质量分数)的2-甲基吡嗪。

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	冯亚青
	吴鹏
	周立山
	孟舒献

关键词： 2-甲基吡嗪乙二胺环氧丙烷气固相接触催化

Abstract： 2-Methylpyrazine has been synthesized by gas-solid contact catalysis of ethylene diamine with propylene oxide in fixed-bed reactor.The optimum conditions are obtained.The preheating temperature is 260℃.The reaction temperature is 380℃.The molar ratio of propylene oxide and ethylene diamine is 12∶1 and its flow rate is 6mL/h.The flow rates of hydrogen and nitrogen are both 4L/h.The yield of 2-methylpyrazine is above 89%.After seperating,the purified of 2-methylpyrazine is above 99%.

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Received 2003-09-15; published 2003-09-15

引用本文:

冯亚青,吴鹏,周立山,孟舒献.环氧丙烷与乙二胺合成2-甲基吡嗪的研究[J]. 化学工业与工程, 2003,20(5): 266-269

FENG Ya-qing, WU Peng,ZHOU Li-shan,MENG Shu-xian.Synthesis of 2-Methylpyrazine by Ethylenediamine and Propylene Oxide[J]. Chemcial Industry and Engineering, 2003,20(5): 266-269