Homogeneous transition metal complex (tBuPNP)Ru(CO)HCl (tBuPNP = 2,6-bis((di-tert-butyl-phosphino)methyl)pyridine) was encapsulated into the robust zirconium-oxo based metal-organic framework (MOF) UiO-66 through aperture opening encapsulation. The resulting encapsulated complex, [Ru]@UiO-66, was an active catalyst for the hydrogenation of carbon dioxide. Compared to its homogeneous counterpart, the hybrid catalyst shows comparable TON, high recyclability, prevention of bimolecular catalyst decomposition, and resistant to bulky thiols. Using dye as an encapsulation guest, the combination study of solvent dependence, size-dependency, and indirect detection of the aperture opened intermediate suggest the dissociative linker exchange mechanism in UiO-66 is necessary for the encapsulation. These results demonstrate the high utility of this aperture-opening encapsulation process as a strategy to synthesize host-guest materials for chemical catalysis

Aperture-opening encapsulation of a transition metal catalyst in a metal-organic framework for CO2 hydrogenation

256th National Meeting (2018)

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