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                            1. 亿网棋牌ZIBOQINGLANHUAGONGXIAOSHOUYOUXIANGONGSI

                              DIANHUA:ZHAOHONGBO

                              DIANHUA:LIUJINGLI

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                              DIZHI:SHANDONGSHENGZIBOSHIYINTAISHIDAIGUANGCHANGCZUO1310

                              三乙胺的蒸馏方法

                                三乙胺用作光气法制取聚碳酸酯的催化剂、有机合成中的催化剂或溶剂和原料、防腐剂、杀菌剂、医药品、高能原料和液体火箭推进剂等。可见三乙胺的用途十分广泛,那么三乙胺应该如何蒸馏呢,下面带大家了解一下:
                                1、可以用硫酸钙、氢化铝锂、4A分子筛、氢化钙、氢氧化钾或碳酸钾干燥后蒸馏。
                                2、也可用氧化钡、钠丝做干燥剂、与乙酐、苯甲酸酐、邻苯二甲酐或对甲苯磺酰氯一起回流,可以除去三乙胺中所含的伯、仲胺,然后蒸馏出不参与反映的三乙胺。
                                3、用片碱多次干燥,取上层清液蒸馏即得水份小于0.2%的三乙胺。
                                4、加入无水Na2SO4等中性干燥剂或CaCl2等碱性干燥剂干燥后重蒸。
                                三乙胺是在室温下为液体简单的均三取代叔胺,因此在有机合成中被广泛用作溶剂和碱使用,一般缩写为Et3N、NEt3或TEA。它是有机合成中常用的有机碱之一。
                                小编:L

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