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Functionalized MOFs for Enhanced CO2 Capture

Torrisi, A; Bell, RG; Mellot-Draznieks, C; (2010) Functionalized MOFs for Enhanced CO2 Capture. CRYST GROWTH DES , 10 (7) 2839 - 2841. 10.1021/cg100646e.

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Based on computational studies, we propose new metal organic framework materials, in which the bridging ligands have been functionalized by different substituents, with the aim of improving the CO2 adsorption capacity of the material. The materials are based on the large-pore form of MIL-53(Al3+), with the following functional groups: OH-, COOH-, NH2-, and CH3-. For each form, adsorption heats and isotherms were simulated using the Grand Canonical Monte Carlo method which were found to be consistent with DFT calculations. The study illustrates the enormous impact of the functional groups in enhancing CO2 capture in the pressure range 0.01-0.5 bar and at room temperature. It also provides important insights into the structural factors which play a key role in the CO2 adsorption process in the functionalized MOFs. We propose the material (OH)(2)-MIL-53(Al3+) as an optimal candidate for improved CO2 capture at low pressures.

Type: Article
Title: Functionalized MOFs for Enhanced CO2 Capture
DOI: 10.1021/cg100646e
UCL classification: UCL > School of BEAMS
UCL > School of BEAMS > Faculty of Maths and Physical Sciences
URI: http://discovery.ucl.ac.uk/id/eprint/131615
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