东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2006, Vol. 27 ›› Issue (4): 469-472.DOI: -

• 论著 • 上一篇    

升温速率对β-CD/1-MCP热分解反应动力学的影响

何翊;孙挺;   

  1. 东北大学理学院;东北大学理学院 辽宁沈阳110004;辽宁沈阳110004
  • 收稿日期:2013-06-23 修回日期:2013-06-23 出版日期:2006-04-15 发布日期:2013-06-23
  • 通讯作者: He, Y.
  • 作者简介:-
  • 基金资助:
    国家高技术研究发展计划项目(2002AA340640)

Effect of temperature rising rate on thermolysis reaction kinetics of β-CD/1-MCP

He, Yi (1); Sun, Ting (1)   

  1. (1) School of Sciences, Northeastern University, Shenyang 110004, China
  • Received:2013-06-23 Revised:2013-06-23 Online:2006-04-15 Published:2013-06-23
  • Contact: He, Y.
  • About author:-
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摘要： 用程序升温热重法对-βCD与1-MCP包结物的热分解动力学进行了研究,考察了升温速率对TG/DTG谱图的影响,并用单一升温速率法和多个升温速率组合法分别作了动力学分析.结果表明:动力学参数(Tm和(dα/dT)m)均随着升温速率的升高而增大,两种计算方法得到的动力学参数是不同的,单一升温速率法计算出的E和A值遵循关系式:lnA=0.1059E+1.013,即存在动力学补偿效应;多个升温速率组合法对E的计算,则依赖于升温速率的组合.

关键词: β-环糊精, 1-甲基环丙烯, 升温速率, 热分解动力学, 程序升温热重法

Abstract: The inclusion complexes of β-CD and 1-MCP were studied by temperature-programmed themogravimetry, from which the TG/DGT spectra were obtain at a temperature rising rate 10-40 K/min. The DTG parameters, Tm and (dα/dT)m, and kinetic parameters were calculated from Freeman-Carroll method and Kissinger method, respectively, both were affected by temperature rising rate. The results showed that the thermal kinetic parameters Tm and (dα/dT)m increase linearly with the rate. From the results by Freeman-Carroll method, it can be found that there is a kinetic compensation effect which reveals a linear relationship: InA=0.1059E+1.013. However, if by Kissinger method, several temperature rising rates are used to calculate the activation energy depending on how to combine these rates together.

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