基于非线性拟合原理的β-CD/1-MCP包结物热分解反应动力学研究

Study on the Thermal Decomposition Activation Kinetics of β-Cyclodextrin and 1-Methylcyclopropene In

摘要: 用非线性拟合原理对β-CD/1-MCP的包结物热分解反应动力学进行了研究.结果表明:在10号机理函数下求得的反应活化能随温度升高(降解率增大)呈单调变化.包结物热分解过程只存在着一个阶段,即1-MCP/β-CD之间的作用力被破坏,所包结的1-MCP从β-CD的空腔中脱离出来.这种降解的非阶段性从速率常数的变化同样也得到反映.包结物热降解过程存在着动力学补偿效应:lnAn=0.289 4En-3.531 5(相关系数r为0.999 0).

Abstract: The thermal decomposition activation kinetics of βcyclodextrin and 1-methylcyclopropene inclusion complex was researched by means of the principles of non-linear simulation.The results showed that the activation energy increases with temperature increase monotonously in No.10 mechanism function.The β-CD / 1-MCP occurs only a stage during the thermal decomposition.That is to say,the interaction force between β-CD and 1-MCP was undermined,the 1-MCP enwrapped breaks away from the cavity of the β-CD.The non-pha...