Abstract：The preparation of phenol and cyclohexanone via cyclohexylbenzene process represents a novel process that substitutes the traditional cumene process. The acid-catalyzed decomposition of cyclohexylbenzene hydroperoxide (CHBHP) to produce phenol and cyclohexanone is a critical step in this process. In this study, sodium styrene sulfonate and 2-hydroxyacrylate were copolymerized under solvothermal conditions, and then sulfonic acid-functionalized polymer solid acid catalysts were fabricated through ion exchanging in acid medium. The performance of sulfonic acid-functionalized polymers prepared with varying amounts of olefin monomers in CHBHP decomposition reaction was investigated. The results indicated that the catalyst H-PHEA-0.81-SO3H prepared with a molar ratio of 0.81 of sodium styrene sulfonate to 2-hydroxyacrylate, exhibited the optimal structure and performance. The optimized decomposition reaction conditions were as follows: the concentration of CHBHP in the cyclohexylbenzene oxidation solution was 22.3% (mass fraction), the catalyst dosage was 3.0% of the mass of cyclohexylbenzene oxidation solution, the reaction temperature was 80 ℃ and the acid hydrolysis time was 2 h. Under these conditions, the conversion rate of CHBHP reached 98.2%, the selectivity of phenol was 84.7% and the selectivity of cyclohexanone was 81.7%. This study provided effective reference for the construction of solid acid catalytic system of CHBHP decomposition.
GONG Ping,GONG Zhaoxiang,BAI Ge et al. Solid Acid Catalyzed the Decomposition of Cyclohexyl Benzene Hydroperoxide to Prepare Phenol and Cyclohexanone[J]. Chemical Reaction Engineering and Technology, 2025, 41(4): 466-474.
