甲苯和间戊二烯合成2,6-二甲基萘反应的热力学分析

Thermodynamic Analysis of Reaction Process in the Preparation of 2,6-Dimethylnaphalene from Toluene and 1,3-Pentadiene

摘要: 采用Th inh法对甲苯和间戊二烯为原料合成2,6-二甲基萘过程中烷基化、环化、脱氢及异构化等各步反应进行了热力学计算,验证了其在热力学上的可行性,并得到了不同温度下各步反应的标准摩尔焓和平衡常数,得出热力学条件下各步反应的最佳条件。通过分析认为将脱氢和异构化两步耦合为一步在热力学上是可行的。

Abstract: Preparation of 2,6-dimethylnaphalene from toluene and 1,3-pentadiene is a new reaction process.Thermodynamic calculation on alkylation,cyclization,dehydrogenation and isomerization in this process was carried out via Thinh method.Standard molar enthalpies and equilibrium constants of foregoing reactions were obtained and optimum reaction conditions were investigated.The calculation results(indicate) that the preparation process is feasible,so as the coupling of dehydrogenation and isomerization(processes.)