燃料化学学报（中英文）2026，Vol.54Issue(6)：90-101,12.DOI:10.1016/S1872-5813(25)60628-1
乙酰丙酮钼封装在TS-1分子筛催化剂用于CO2耦合烯烃制环碳酸酯
MoO2(acac)2-encapsulated in TS-1 zeolite catalyst for CO2 coupling with olefins to cyclic carbonates
摘要
Abstract
The coupling of CO2 with olefins to produce cyclic carbonates has emerged as an important research topic in sustainable chemistry,owing to its high atom economy and the wide applicability of the resulting products.However,this reaction faces a significant challenge due to the mismatch between the rates of the epoxidation and cycloaddition steps.In this work,a series of TS-1 zeolite catalysts encapsulating different amounts of molybdenum acetylacetonate were prepared through hydrothermal synthesis followed by post-treatment,with the aim of elucidating the rate balance between the epoxidation and cycloaddition steps and the underlying regulation mechanism.Characterization results show that the Mo species were present as highly dispersed molybdenum acetylacetonate complexes that were stably confined within the TS-1 framework.These complexes interact electronically with the tetra-coordinated Ti sites to form synergistic active centers,while imposing negligible effects on the zeolite structure and porosity.In the CO2-styrene coupling reaction,tuning the Mo loading enabled effective control over the epoxidation rate,thereby achieving an appropriate balance with the subsequent cycloaddition step.The optimized catalyst delivered excellent performance under mild conditions,with a styrene conversion of 83.4％and a selectivity of 75.3％,and also exhibited outstanding recyclability.Overall,this encapsulated catalyst successfully addresses the dual challenges of rate matching and active-site stability in CO2-olefin coupling,providing valuable insights for the rational design of efficient,durable bifunctional catalysts.关键词
TS-1分子筛/乙酰丙酮钼/封装/CO2转化/环碳酸酯Key words
TS-1 zeolite/molybdenyl acetylacetonate/encapsulation/CO2 conversion/cyclic carbonates分类
化学化工引用本文复制引用
邢梦姣,唐健瑜,赵胤迪,蔡育珊,梁幸楷,谢锦霞,张天釜,方奕文,刘粟侥..乙酰丙酮钼封装在TS-1分子筛催化剂用于CO2耦合烯烃制环碳酸酯[J].燃料化学学报（中英文）,2026,54(6):90-101,12.基金项目
Supported by Guangdong Basic and Applied Basic Research Foundation(2023A1515012115)and the National Natural Science Foundation of China(22072174). （2023A1515012115）
