Confined toluene within InOF-1: CO capture enhancement

The toluene adsorption properties of InOF-1 are studied along with the confinement of small amounts of this non-polar molecule revealing a 1.38-fold increase in CO 2 capture, from 5.26 wt% under anhydrous conditions to 7.28 wt% with a 1.5 wt% of pre-confined toluene at 298 K. The InOF-1 affinity tow...

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Published inRSC advances Vol. 9; no. 56; pp. 32864 - 32872
Main Authors Garrido-Olvera, L. Pamela, Sanchez-Bautista, Jonathan E, Alvarado-Alvarado, Daniel, Landeros-Rivera, Bruno, Álvarez, J. Raziel, Vargas, Rubicelia, González-Zamora, Eduardo, Balmaseda, Jorge, Lara-García, Hugo A, Martínez, Ana, Ibarra, Ilich A
Format Journal Article
Published 15.10.2019
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Summary:The toluene adsorption properties of InOF-1 are studied along with the confinement of small amounts of this non-polar molecule revealing a 1.38-fold increase in CO 2 capture, from 5.26 wt% under anhydrous conditions to 7.28 wt% with a 1.5 wt% of pre-confined toluene at 298 K. The InOF-1 affinity towards toluene was experimentally quantified by Δ H ads (−46.81 kJ mol −1 ). InOF-1 is shown to be a promising material for CO 2 capture under industrial conditions. Computational calculations (DFT and QTAIM) and DRIFTs in situ experiments provided a possible explanation for the experimental CO 2 capture enhancement by showing how the toluene molecule is confined within InOF-1, which constructed a "bottleneck effect". The confinement of small amounts of toluene demonstrated an enhanced CO 2 capture for InOF-1 as a result of a bottleneck effect and synergistic interactions.
Bibliography:Electronic supplementary information (ESI) available: PXRD data, derivation of the isosteric enthalpy of adsorption for toluene and theoretical calculations. See DOI
10.1039/c9ra05991a
ISSN:2046-2069
DOI:10.1039/c9ra05991a