title: Rapid, Microwave-Assisted Synthesis of Cubic, Three-Dimensional, Highly Porous MOF-205 for Room Temperature CO2Fixation via Cyclic Carbonate Synthesis.
abstract: A dual-porous, three-dimensional, metal-organic framework [Zn4O(2,6-NDC)(BTB)4/3] (MOF-205, BET = 4200 m2/g) has been synthesized using microwave power as an alternative energy source for the first time, and its catalytic activity has been exploited for CO2-epoxide coupling reactions to produce five-membered cyclic carbonates under solvent-free conditions. Microwave synthesis was performed at different time intervals to reveal the formation of the crystals. Significant conversion of various epoxides was obtained at room temperature, with excellent selectivity toward the desired five-membered cyclic carbonates. The importance of the dual porosity and the synergistic effect of quaternary ammonium salts on efficiently catalyzed CO2conversion were investigated using various experimental and physicochemical characterization techniques, and the results were compared with those of the solvothermally synthesized MOF-205 sample. On the basis of literature and experimental inferences, a rationalized mechanism mediated by the zinc center of MOF-205 for the CO2-epoxide cycloaddition reaction has been proposed.
authors.affiliation: Division of Chemical and Biomolecular Engineering, Pusan National University , Busan, 609-735, Korea.
authors.forename: Robin
authors.initials: R
authors.lastname: Babu
authors.affiliation: Division of Chemical and Biomolecular Engineering, Pusan National University , Busan, 609-735, Korea.
authors.forename: Roshith
authors.initials: R
authors.lastname: Roshan
authors.affiliation: School of Chemistry, University of Dublin, Trinity College , Dublin 2, Ireland.
authors.forename: Amal Cherian
authors.initials: AC
authors.lastname: Kathalikkattil
authors.affiliation: Chemical Industry Development Center, Ulsan Chemical R&D Division, Korea Research Institute of Chemical Technology , Ulsan 681-802, Korea.
authors.forename: Dong Woo
authors.initials: DW
authors.lastname: Kim
authors.affiliation: Division of Chemical and Biomolecular Engineering, Pusan National University , Busan, 609-735, Korea.
authors.forename: Dae-Won
authors.initials: DW
authors.lastname: Park
keywords: carbon dioxide; catalysis; cyclic carbonates; epoxides; metal−organic framework; microwave synthesis