| 常压CO2气流法制D,L-丙交酯 |
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| 引用本文： | 苏涛,覃玉莹,马华,韦磊. 常压CO2气流法制D,L-丙交酯[J]. 精细化工, 1999, 16(3): 41-43 |
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| 作者姓名： | 苏涛 覃玉莹 马华 韦磊 |
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| 作者单位： | 广西大学,化学化工学院化学系,广西,南宁,530004 |
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| 基金项目： | 国家自然科学基金,广西科委匹配资金项目 |
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| 摘 要： | 在ＣＯ２气流中用Ｄ,Ｌ－乳酸为原料,硫酸亚锡为催化剂,包括内外消旋体的粗丙交酯产率可达８２％,外消旋Ｄ,Ｌ－丙交酯约占其中的１／２。作为对比,用Ｎ２气流时的粗丙产酯产率为８３．２％,二者产率相差无几,可用ＣＯ２代替Ｎ２用于丙交酯的制备。
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| 关 键 词： | 丙交酯 二氧化碳 乳酸 |
Preparation of Lactide from Lactic Acid at Normal Pressure by the CO2 Flow Process |
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| SU Tao,QIN Yu-ying,MA Hua,WEI Lei. Preparation of Lactide from Lactic Acid at Normal Pressure by the CO2 Flow Process[J]. Fine Chemicals, 1999, 16(3): 41-43 |
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| Authors: | SU Tao QIN Yu-ying MA Hua WEI Lei |
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| Abstract: | Lactide was prepared in the CO-2 flow starting from lactic acid and using stannous sulfate as catalyst.The yield of raw lactide including the racemic and meso isomers could reach 82% versus a yield of 83.2% in the N-2 flow.The racemic D,L lactide accounted for about half of the yield.The results were very close to CO-2 and N-2 used,suggesting that CO-2 can replace N-2 in lactide producing process.= |
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| Keywords: | lactide CO-2 lactic acid= Foundation item: Granted by state natural science fund (29464011) supported by Guangxi science committee fund(9543004) |
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