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AA/HPHP与AA/NPG聚酯化反应的动力学研究 被引量:3

Reaction Kinetics in Polyesterification of AA/HPHP and AA/NPG
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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 2 1 .5 1 %和 1 1 .3 3 % ;指前因子误差达到 97.40 %和 87.96% . 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.
出处 《高等学校化学学报》 SCIE EI CAS CSCD 北大核心 2004年第8期1545-1548,M007,共5页 Chemical Journal of Chinese Universities
基金 教育部科学技术研究重点项目 (批准号 :2 0 0 110 2 6)资助
关键词 聚酯化反应 动力学 反应级数 己二酸 Polyesterification Kinetics Reaction order Adipic acid
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同被引文献32

  • 1张伟禄,张东,赵雅娟.AA/TMPD与AA/BEPD反应体系的动力学研究[J].长春工业大学学报,2006,27(4):290-292. 被引量:1
  • 2张伟禄,张东,乔迁,赵雅娟.副产物对醇酸缩聚反应动力学参数的影响[J].合成纤维工业,2007,30(3):7-9. 被引量:2
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