title: Three-dimensional pillar-layered copper(II) metal-organic framework with immobilized functional OH groups on pore surfaces for highly selective CO2/CH4 and C2H2/CH4 gas sorption at room temperature.
abstract: A new three-dimensional microporous metal-organic framework Cu(BDC-OH)(4,4'-bipy)·G(x) (UTSA-15; H(2)BDC-OH = 2-hydroxy-benzenedicarboxylic acid, 4,4'-bipy =4,4'-bipyridine, G = guest molecules) with functional -OH groups on the pore surfaces was solvothermally synthesized and structurally characterized. UTSA-15 features a three-dimensional structure having 2D intercrossed channels of about 4.1 × 7.8 and 3.7 × 5.1 Å(2), respectively. The small pores and the functional -OH groups on the pore surfaces within the activated UTSA-15a have enabled their strong interactions with CO(2) and C(2)H(2) which have been revealed in their large adsorption enthalpies of 39.5 and 40.6 kJ/mol, respectively, highlighting UTSA-15a as the highly selective microporous metal-organic framework for the CO(2)/CH(4) and C(2)H(2)/CH(4) gas separation with separation selectivity of 24.2 and 55.6, respectively, at 296 K.
authors.affiliation: Department of Chemistry, Fudan University, Shanghai 200433, P. R. China.
authors.forename: Zhenxia
authors.initials: Z
authors.lastname: Chen
authors.forename: Shengchang
authors.initials: S
authors.lastname: Xiang
authors.forename: Hadi D
authors.initials: HD
authors.lastname: Arman
authors.forename: Jalal U
authors.initials: JU
authors.lastname: Mondal
authors.forename: Peng
authors.initials: P
authors.lastname: Li
authors.forename: Dongyuan
authors.initials: D
authors.lastname: Zhao
authors.forename: Banglin
authors.initials: B
authors.lastname: Chen