Porous Metal‐Organic Polyhedral Framework containing Cuboctahedron Cages as SBUs with High Affinity for H2 and CO2 Sorption: A Heterogeneous Catalyst for Chemical Fixation of CO2. Issue 43 (3rd July 2018)

• Record Type: Journal Article
• Authors: Maity, Kartik; Karan, Chandan Kumar; Biradha, Kumar
• Is Part Of: Chemistry. Volume 24:Issue 43(2018)
• Page Start: 10988
• Page End: 10993
• Publication Date: 2018-07-03
• Subjects: carbon dioxide capture -- carbon dioxide fixation -- hydrogen storage -- metal organic polyhedral framework -- stability; Chemistry -- Periodicals; 540
• DOI: 10.1002/chem.201802829
• Languages: English
• ISSNs: 0947-6539

Abstract

Abstract: Development of active porous materials that can efficiently adsorb H2 and CO2 is needed, due to their practical utilities. Here we present the design and synthesis of an interpenetrated Cu II metal‐organic framework (MOF) that is thermally stable, highly porous and can act as a heterogeneous catalyst. The Cu II ‐MOF contains a highly symmetric polyhedral metal cluster (Cu24 ) with cuboctahedron geometry as secondary building unit (SBU). The double interpenetration of such huge cluster‐containing nets provides a high density of open metal sites, due to which it exhibits remarkable H2 storage capacity (313 cm 3 g −1 at 1 bar and 77 K) as well as high CO2 capture ability (159 cm 3 g −1 at 1 bar and 273 K). Further, its propensity towards CO2 sorption can be utilized for the heterogeneous catalysis of the chemical conversion of CO2 into the corresponding cyclic carbonates upon reaction with epoxides, with high turnover number and turnover frequency values. Abstract : Gas affinity : The reported Cu II ‐MOF contains a highly symmetric polyhedral metal cluster (Cu24 ) as secondary building unit (SBU). The double interpenetration provides a high density of open metal sites, due to which it exhibits remarkable H2 storage capacity as well as high CO2 capture ability. It can also catalyse CO2 fixation into cyclic carbonates.