Analysis of reaction process in preparation of chlorocyclohexane by direct chlorination of cyclohexane

The yield of chlorocyclohexane increased slowly with rising of reflux rate during the reactive distillation process of chlorocyclohexane preparation by photochlorination of cyclohexane. Thus, the existence of parallel reactions in this system was confirmed tentatively. The chlorinated liquid from the process for preparation of chlorocyclohexane by photochlorination of cyclohexane was analyzed by gas chromatography-mass spectrometry. The structures of 8 main products were determined. 3 parallel reactions were determined through the macroanalysis of reaction process. The consecutive-parallel reaction network mechanism was determined preliminarily. The present work may present a reference for research of reaction kinetics and optimization of preparation of chlorocyclohexane with reactive distillation process.