硫化异丁烯的一步法合成反应动力学研究

Research on Reaction Kinetics of Sulfurized Isobutylene by One-Step Synthesis

以氨水为催化剂,以硫磺和异丁烯为原料一步法合成了硫化异丁烯.采用红外、拉曼光谱和气相色谱-质谱联用分析了硫化异丁烯的化学组成,并对其结构进行了表征,建立了各集总组分相对含量的气相色谱测定方法.考察了产物组成随反应时间（0～180 min）和反应温度（160～200℃）的变化规律,根据实验结果提出了简化的硫化异丁烯合成反应网络,并以线性曲线拟合法求解参数,建立了动力学模型,为全面剖析烯烃硫化反应过程和进一步的反应器设计奠定了基础.

The sulfurized isobutylene was synthesized with sulfur and isobutylene as reactants and ammonia as catalyst in a batch reactor. The specific structure and the composition of sulfurized isobutylene were characterized by using FT-IR, Raman spectra and MS-GC, and the GC method to measure the content of each lumped component was established. The product distribution of the sulfurized isobutylene synthesis was investigated at the reaction time range of 0- 180 min and temperature range of 160--200℃. From the experimental results, a simplified reaction network of sulfurized isobutylene synthesis, and three parallel kinetic models were proposed. The parameters of the kinetic models were obtained by the linear curve fitting. The reliability of the models was verified by a statistical test. The proposed kinetic models can lay a foundation for comprehensive analysis of olefin vulcanization orocess and fnrthor reactor design.