The effects of reaction temperature,type of diluent and dilution ratio(mass ratio of diluent to cyclopentadiene)on the dimerization of cyclopentadiene are studied,and the intrinsic kinetic models are developed for the dimerization.Results show that both low temperature and high dilution ratio are beneficial to decrease the polymerization rate of cyclopentadiene.The polymerization rate of cyclopentadiene at 10℃ is about 30 times that at-20℃.The kinetic data are collected at 0-90℃ and 0-105℃ with non-polar xylene and polar acetonitrile as diluent,respectively.According to the dimerization characteristics,the kinetic model is developed for cyclopentadiene dimerization reaction,and the model parameters are obtained by fitting the experimental data.Results show that the rate constant of the polymerization reaction drops but the activation energy for the reaction does not show significant change(from 7.00×104 J·mol-1 to 7.19×104 J·mol-1)when the diluent of cyclopentadiene is changed from xylene to acetonitrile.The model is validated with further experimental data,and it is shown that prediction values are in agreement with the experimental ones,which further confirms the reliability of the model.
维普
万方数据