Porous Covalent Organic Polymers for Efficient Fluorocarbon-Based Adsorption Cooling.

Autor: Zheng J; Department of Chemical Engineering, Sichuan University, Chengdu, 610065, P. R. China.; Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA, 99352, USA., Wahiduzzaman M; ICGM, Univ. Montpellier, CNRS, ENSCM, Montpellier, France., Barpaga D; Energy and Environment Directorate, Pacific Northwest National Laboratory, Richland, WA, 99352, USA., Trump BA; Center for Neutron Diffraction, National Institute of Standards and Technology, Gaithersburg, MD, 20899, USA., Gutiérrez OY; Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA, 99352, USA., Thallapally P; Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA, 99352, USA., Ma S; Department of Chemistry, University of North Texas, Denton, TX, 76201, USA., McGrail BP; Energy and Environment Directorate, Pacific Northwest National Laboratory, Richland, WA, 99352, USA., Maurin G; ICGM, Univ. Montpellier, CNRS, ENSCM, Montpellier, France., Motkuri RK; Energy and Environment Directorate, Pacific Northwest National Laboratory, Richland, WA, 99352, USA.
Jazyk: angličtina
Zdroj: Angewandte Chemie (International ed. in English) [Angew Chem Int Ed Engl] 2021 Aug 09; Vol. 60 (33), pp. 18037-18043. Date of Electronic Publication: 2021 Jun 04.
DOI: 10.1002/anie.202102337
Abstrakt: Adsorption-based cooling is an energy-efficient renewable-energy technology that can be driven using low-grade industrial waste heat and/or solar heat. Here, we report the first exploration of fluorocarbon adsorption using porous covalent organic polymers (COPs) for this cooling application. High fluorocarbon R134a equilibrium capacities and unique overall linear-shaped isotherms are revealed for the materials, namely COP-2 and COP-3. The key role of mesoporous defects on this unusual adsorption behavior was demonstrated by molecular simulations based on atomistic defect-containing models built for both porous COPs. Analysis of simulated R134a adsorption isotherms for various defect-containing atomistic models of the COPs shows a direct correlation between higher fluorocarbon adsorption capacities and increasing pore volumes induced by defects. Combined with their high porosities, excellent reversibility, fast kinetics, and large operating window, these defect-containing porous COPs are promising for adsorption-based cooling applications.
(© 2021 Wiley-VCH GmbH.)
Databáze: MEDLINE
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