| H_3PW_(12)O_(40)催化合成三乙酸甘油酯及产物精制 |
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| 引用本文： | 丁斌,金朝辉,张春祥,潘高峰.H_3PW_(12)O_(40)催化合成三乙酸甘油酯及产物精制[J].精细石油化工,2003(2):47-50. |
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| 作者姓名： | 丁斌 金朝辉 张春祥 潘高峰 |
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| 作者单位： | 1. 吉林化工学院化学工程系,吉林,132022
2. 中国石油吉林石化公司企业管理及计划部,吉林,132022 |
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| 摘 要： | 对H3PW12 O4 0 ·xH2 O(PW12 )和PW12 /C催化乙酸和甘油酯化合成三乙酸甘油酯进行了研究。考察了催化剂用量、甘油 /乙酸 (摩尔比 )、反应温度、反应时间等因素对反应结果的影响。固载型杂多酸催化剂重复使用 9次 ,活性没有明显下降。粗产物可用活性炭脱色。较适宜的酯化反应条件是 :甘油 /乙酸 (摩尔比 ) 1∶4.0 ,催化剂 /甘油 (质量比 ) 2 .5 %,醋酐 /甘油 (质量比 ) 2 0 %,总反应时间 4～ 5h ,反应温度 <12 5℃ ,甘油酯化率大于 98%,纯度大于 99%。
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| 关 键 词： | H3PW12O40/C杂多酸催化剂 三乙酸甘油酯 活性炭 酯化 精制 |
| 修稿时间： | 2002年1月11日 |
SYNTHESIS OF GLYCERIN TRIACETATE CATALYZED BY H3PW12O40 AND PURIFIED BY ACTIVATED CARBON |
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| Ding Bin,Jin Zhaohui,Zhang Chunxiang and Pan Gaofeng.SYNTHESIS OF GLYCERIN TRIACETATE CATALYZED BY H3PW12O40 AND PURIFIED BY ACTIVATED CARBON[J].Speciality Petrochemicals,2003(2):47-50. |
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| Authors: | Ding Bin Jin Zhaohui Zhang Chunxiang and Pan Gaofeng |
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| Affiliation: | Ding Bin1,Jin Zhaohui1,Zhang Chunxiang2 and Pan Gaofeng1 |
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| Abstract: | The synthesis of glycerin triacetate from acetic acid and glycerin catalyzed by H 3PW 12O 40·xH 2O(PW 12) or PW 12/C was studied. The effects of reaction conditions such as the amount of catalyst, glycerin/acetic acid (molar ratio), reaction temperature, and reaction time etc. were investigated. The PW 12/C could be used for 9 times without distinct decrease in activity. The raw product could be decolorized by activated carbon. The optimum conditions for the esterification reaction are as follow: glycerin/acetic acid (molar ratio) 1∶4, catalyst/glycerin (mass ratio) 2.5%, acetic anhydride/glycerin (mass ratio) 20%, total reaction time 45 h and reaction temperature <125 ℃. The esterification rate of glycerin is >98%, and the product purity is >99%. |
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| Keywords: | H3PW12O40·xH 2O/C glycerin triacetate activated carbon esterification finishion purificatgion |
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