Abstract This work deals with a study of the effect of temperature on the cyclohexylamine disproportionation to dicyclohexylamine, conjointly with the thermodynamic analysis of this process. The laboratory experiments were carried out in a glass tubular continuous-flow reactor in a gaseous phase at the reaction temperature 433–463 K over a nickel catalyst. The results show, that the temperature has a trifling effect on equilibrium conversion of cyclohexylamine. However, temperature affects the formation of hydrocarbons, benzene and cyclohexane, and dehydrogenation products of dicyclohexylamine, i.e. N-cyclohexylidenecyclohexanamine and N-phenylcyclohexylamine. The latter one is the dominant product of dicyclohexylamine dehydrogenation. The disproportionation of cyclohexylamine has slightly exothermic character. At the experimental reaction temperature range, the cyclohexylamine disproportionation is spontaneous reaction and other reactions of this process are non-spontaneous.

中文翻译：

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环己胺歧化制二环己胺过程的热力学分析

摘要 这项工作涉及温度对环己胺歧化成二环己胺的影响的研究，并结合该过程的热力学分析。实验室实验是在气相的玻璃管式连续流动反应器中进行的，反应温度为 433-463 K，在镍催化剂上进行。结果表明，温度对环己胺的平衡转化率影响不大。然而，温度影响烃、苯和环己烷的形成，以及二环己胺的脱氢产物，即N-亚环己基环己胺和N-苯基环己胺。后者是二环己胺脱氢的主要产物。环己胺的歧化具有轻微放热特性。