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Aasif Helal,Muhammad Usman,Md. Eyasin Arafat,Mahmoud M Abdelnaby 한국공업화학회 2020 Journal of Industrial and Engineering Chemistry Vol.89 No.-
The conversion of epoxides to cyclic carbonates is one of the most common CO2 fixation reactions. Metalorganicframeworks (MOFs), due to their porosity, easily tunable properties and Lewis acidic sites, areextensively used in heterogeneous catalysis. In this paper, we report the derivatization of the metalorganicframework (MOF) UiO-66 (University of Oslo) with allyloxy groups to give UiO-66-BAT(BAT = bisallyloxyterephthalate). The catalyst was characterized by PXRD, BET, IR, SEM, digestion NMRand CO2 adsorption. UiO-66-BAT had a good CO2 uptake of 84 cc/g at 273K and a Qst value of 27.5 kJ mol 1. Due to the affinity of the allyloxy group toward CO2 and the proximity of the zirconium Lewis acid sites,we applied UiO-66-BAT as a catalyst for the conversion of epoxides to cyclic carbonates by using CO2. Weshowed that UiO-66-BAT converts propylene oxide (PO) to its corresponding cyclic carbonates at 50 C, a5 bar pressure, and a 6 h reaction time with a 95% yield. UiO-66-BAT also gave a good yield in theconversion of numerous aliphatic and aromatic epoxides. The catalysts exhibited a good recyclability forup to 9 cycles.