Conversion of actual flue gas CO 2 via cycloaddition to propylene oxide catalyzed by a single-site, recyclable zirconium catalyst
AuthorsKelly, Michael J.
Vummaleti, Sai V.C.
KAUST DepartmentKAUST Catalysis Center (KCC)
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AbstractA reusable zirconium-based catalyst for the cycloaddition of CO2 to propylene oxide (PO) was prepared by the surface organometallic chemistry (SOMC) methodology. Accordingly, well-defined amounts of the ZrCl4·(OEt2)2 precursor were grafted on the surface of silica dehydroxylated at 700°C (SiO2-700) and at 200°C (SiO2-200) in order to afford surface coordination compounds with different podality and chemical environment. The identity of the surface complexes was thoroughly investigated by FT-IR, elemental microanalysis and solid state NMR and applied as a recoverable and reusable heterogeneous catalyst for the title reaction using pure CO2 and flue gas samples from a cement factory. The observed catalytic activity for the isolated zirconium complexes is rationalized by means of systematic DFT calculations.
CitationKelly MJ, Barthel A, Maheu C, Sodpiban O, Dega F-B, et al. (2017) Conversion of actual flue gas CO 2 via cycloaddition to propylene oxide catalyzed by a single-site, recyclable zirconium catalyst. Journal of CO2 Utilization 20: 243–252. Available: http://dx.doi.org/10.1016/j.jcou.2017.05.020.
JournalJournal of CO2 Utilization