石油化工2025，Vol.54Issue(11)：1549-1558,10.DOI:10.3969/j.issn.1000-8144.2025.11.001
表面胺化TS-1催化丙烯CO2一步法制备碳酸丙烯酯
One-step synthesis of propylene carbonate from propylene and CO2 over surface amine-modified TS-1
摘要
Abstract
This work addresses the challenge of propylene oxide hydrolysis during the one-step synthesis of propylene carbonate(PC)from propylene,CO2,and H2O2 by regulating acidic sites in TS-1 zeolite through surface amination.A systematic investigation of the structure-activity relationships in surface amine-modified TS-1 was conducted through comparative analysis of organic amines with different chain lengths,focusing on the regulatory mechanism of diethylenetriamine(DETA)/concentration on Ti coordination states and acid site distribution.Catalytic experiments demonstrate that low-concentration DETA-modified TS-1 achieves more than 93%PC selectivity,which is attributed to the synergistic optimization between acid site suppression and electronic state modulation of Ti active sites.The catalyst exhibits excellent stability with above 90%PC selectivity retention after five consecutive reaction cycles.This work provides an effective strategy for precise regulation of acid sites through surface amination to enhance the performance of one-step PC synthesis systems.关键词
胺化处理/TS-1分子筛/CO2转化/一步法/碳酸丙烯酯Key words
amination process/TS-1 zeolite/CO2 conversion/one-step/propylene carbonate分类
化学化工引用本文复制引用
袁俊聪,王泽平,付然飞,赵辉,杨朝合,冯翔..表面胺化TS-1催化丙烯CO2一步法制备碳酸丙烯酯[J].石油化工,2025,54(11):1549-1558,10.基金项目
国家自然科学基金项目(22322814). （22322814）
