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出 处:《现代化工》2011年第5期53-55,57,共4页Modern Chemical Industry
摘 要:以甘油为原料经氯代、环化、加氧反应3步合成了1,3-丙二醇。较优的反应条件为:氯代反应在醋酸(质量分数为6%)为催化剂、温度90℃反应3.5h;环化反应在n(3-氯-1,2-丙二醇):n(氢氧化钠)=1:1、氢氧化钠的质量分数为40%、温度为0℃反应1.5h;加氢反应在钴-氧化镁/硅胶作催化剂、n(氢气):n(环氧丙醇)=10:1、环氧丙醇的质量分数为20%、温度为100~150℃反应4h;1,3丙二醇的总产率可达58.6%。1,3-Propanediol is synthesized from glycerol by chloration,cyclization and hydrogenization. The structure of the target compound is determined by IR and I H-NMR. The optimal reaction conditions are shown as follows: chloration at 90℃ for 3.5 hours with 6% (by mass) acetic acid as eatalyst,cyclization at 0℃ for 1.5 hours with 1:1 of the ratio of 3-chloro-1,2-propanediol and sodium hydroxide(40% by mass) , and hydrogenization catalyzed by Co-MgO/ silica gel at 100 - 150℃ for 4 hours with 10:1 of the ratio of H2 and glyeido(20% by mass). The overall yield of the reactions is 58.6%.
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