In Situ Sulfonated Mesoporous Polydivinylbenzene as a Solid Acid Catalyzed the Condensation of Phenol and Acetone

Sulfonated mesoporous polydivinylbenzene solid acid was prepared by in situ sulfonation method, and the physical chemical properties of this solid acid was characterized by XRD, BET, FT-IR, etc. Acid density of sulfonated mesoporous polydivinylbenzene was characterized by acid base titration, and the result showed that the acid density was 1.58 mmol H+/g. The condensation of phenol and acetone was used as a probe reaction to investigate the catalytic performance of sulfonated mesoporous polydivinylbenzene as a solid acid. Results showed that the phenol conversion rate could approach theoretical conversion rate with Bisphenol-A selectivity of 91 % at 90 degrees C. More importantly, sulfonated mesoporous polydivinylbenzene had good stability, and after repeated use for five times, the catalytic performance was not significantly reduced. Sulfonated mesoporous polydivinylbenzene solid acid was prepared by in situ sulfonation method with the acid density of 1.58 mmol H+/g. This solid acid showed good catalytic performance for the synthesis of Bisphenol-A. In addition, the solid acid had excellent reusability due to the sulfonic acid was connected to the support through covalent bond. image