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当前位置: 首页 > 文章 > 1-甲基环丙烯与β-环糊精的相互作用及热分解动力学 食品科学 2006,27 (8) 25-28
Position: Home > Articles > Interaction and Thermal Decomposition Kinetics between 1-Methylcyclopropene and β-Cyclodextrin FOOD SCIENCE 2006,27 (8) 25-28

1-甲基环丙烯与β-环糊精的相互作用及热分解动力学

作  者：
何翊;孙挺
单  位：
东北大学化学系
关键词：
β-环糊精;1-甲基环丙烯;非等温热重法;热分解动力学;包结物
摘  要：
制备了β-环糊精和1-甲基环丙烯的包结配合物,并利用X-射线粉末衍射(X-RPD)和红外吸收光谱(IR)等测试方法对此包结物进行了研究。通过比较β-环糊精及其与1-甲基环丙烯形成的包结物在光谱上的差异,证实了包结物的生成。非等温热重法研究了β-环糊精与1-甲基环丙烯包结物的热分解动力学实验结果表明,β-环糊精与1-甲基环丙烯包结物热分解过程反应级数小于1。用Ozawa(Ⅰ)法和Reich法求得的活化能分别为101.06kJ/mol和100.71kJ/mol,两种方法所得结果基本一致。较低的表观活化能值说明β-环糊精与客体分子1-甲基环丙烯之间没有形成强烈的化学键,而主要是靠范徳华力相结合的。
译  名：
Interaction and Thermal Decomposition Kinetics between 1-Methylcyclopropene and β-Cyclodextrin
作  者：
HE Yi1,2,SUN Ting1,* (1.Department of Chemistry, Northeastern University, Shenyang 110004, China; 2.Department of Environmental Science and Engineering, Jilin Institute of Chemical Technology, Jilin 132022, China)
关键词：
β-cyclodextrin;1-methylcyclopropene;non-isothermal thermogravimetry;thermal decomposition kinetics;inclusion complex
摘  要：
The inclusion complex of 1-methylcyclopropene with β-cyclodextrin was prepared and characterized with X-ray powder diffraction and IR absorption spectrometry. The differences of the inclusion complex were compared in spectral characteristics, which confirmed the formation of the inclusion complex. The thermal decomposition kinetics of β-cyclodextrin and 1-methylcyclopropene inclusion complex has been studied with non-isothermal thermogravimetry. The experimental results showed that the reaction order of thermal decomposition ofβ-cyclodextrin and 1-methylcyclopropene is less than one. The average activation energies of the thermal decomposition calculated with Ozawa(Ⅰ) method and Reich method are 101.06kJ/mol and 100.71kJ/mol respectively. The small value of Ea showed that there are no strong chemical interactions between β-CD and 1- MCP. This is consistent with the reports that the stable energy of inclusion complexes of β-CD with weakly polar guest molecules is mainly Van der Waals interaction.

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