Enhancement of CO₂ Uptake and Selectivity in a Metal-Organic Framework by the Incorporation of Thiophene Functionality.

ABSTRACT: The complex [Zn₂(tdc)₂dabco] (H₂tdc = thiophene-2,5-dicarboxylic acid; dabco = 1,4-diazabicyclooctane) shows a remarkable increase in carbon dioxide (CO₂) uptake and CO₂/dinitrogen (N₂) selectivity compared to the nonthiophene analogue [Zn₂(bdc)₂dabco] (H₂bdc = benzene-1,4-dicarboxylic acid; terephthalic acid). CO₂ adsorption at 1 bar for [Zn₂(tdc)₂dabco] is 67.4 cm³·g^-1 (13.2 wt %) at 298 K and 153 cm³·g^-1 (30.0 wt %) at 273 K. For [Zn₂(bdc)₂dabco], the equivalent values are 46 cm³·g^-1 (9.0 wt %) and 122 cm³·g^-1 (23.9 wt %), respectively. The isosteri

SUBMITTER: Bolotov VA 

PROVIDER: S-EPMC5951605 | biostudies-literature | 2018 May

REPOSITORIES: biostudies-literature