| AA/HPHP与AA/NPG聚酯化反应的动力学研究 |
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| 引用本文： | 乔迁,张伟禄,张东,刘春艳,田一光,赵亚娟. AA/HPHP与AA/NPG聚酯化反应的动力学研究[J]. 高等学校化学学报, 2004, 25(8): 1545-1548 |
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| 作者姓名： | 乔迁 张伟禄 张东 刘春艳 田一光 赵亚娟 |
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| 作者单位： | 温州师范学院应用化学研究所, 325027 |
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| 基金项目： | 教育部科学技术研究重点项目 (批准号 :2 0 0 110 2 6)资助 |
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| 摘 要： | 考虑缩合水的排除对反应体系的影响,用体积浓度单位推导出一个新的聚酯反应总包动力学方程,并应用到AA/HPHP和AA/NPG两个聚酯化反应的动力学研究中.研究发现,自催化聚酯反应的反应级数并不是固定值,对于AA/HPHP和AA/NPG两个聚酯化反应而言,低温时反应级数为2.5,高温时反应级数为3.0.此外,忽略缩合水的排除对聚酯化反应的动力学参数会产生较大误差.对于AA/HPHP和AA/NPG聚酯化反应,活化能相对误差分别达21.51%和11.33%;指前因子误差达到97.40%和87.96%.
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| 关 键 词： | 聚酯化反应 动力学 反应级数 己二酸 |
| 文章编号： | 0251-0790(2004)08-1545-04 |
| 收稿时间： | 2003-04-15 |
Reaction Kinetics in Polyesterification of AA/HPHP and AA/NPG |
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| QIAO Qian,ZHANG Wei-Lu,ZHANG Dong ,LIU Chun-Yan,TIAN Yi-Guang,ZHAO Ya-Juan. Reaction Kinetics in Polyesterification of AA/HPHP and AA/NPG[J]. Chemical Research In Chinese Universities, 2004, 25(8): 1545-1548 |
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| Authors: | QIAO Qian ZHANG Wei-Lu ZHANG Dong LIU Chun-Yan TIAN Yi-Guang ZHAO Ya-Juan |
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| Affiliation: | Institute of Applied Chemistry, Wenzhou Normal College, Wenzhou 325027, China |
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| Abstract: | A new general kinetic equation was derived in which the effect of the removal of condensation water was taken into account completely,and was applied to the polyesterification kinetic study of AA/HPHP and AA/NPG. It was found that the reaction order of self-catalyzed polyesterification was not constant. For these polyesterifications,the reaction order was 2.5 at a low temperature ,while 3.0 at a high temperature. Moreover,if the effect of the removal of condensation water was neglected,the kinetic parameter would have more deviation. For polyesterifications of AA/HPHP and AA/NPG,the relative deviation of activation energy was 21.51%,11.33%,respectively. The relative deviation of frequency factor was 97.4%,87.96%,respectively. |
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| Keywords: | Polyesterification Kinetics Reaction order Adipic acid |
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