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Title: Fluorocarbon adsorption in hierarchical porous frameworks

Abstract

Metal-organic frameworks comprise an important class of solid-state materials and have potential for many emerging applications such as energy storage, separation, catalysis and bio-medical. Here we report the adsorption behaviour of a series of fluorocarbon derivatives on a set of microporous and hierarchical mesoporous frameworks. The microporous frameworks show a saturation uptake capacity for dichlorodifluoromethane of >4 mmol g(-1) at a very low relative saturation pressure (P/P-o) of 0.02. In contrast, the mesoporous framework shows an exceptionally high uptake capacity reaching >14 mmol g(-1) at P/P-o of 0.4. Adsorption affinity in terms of mass loading and isosteric heats of adsorption is found to generally correlate with the polarizability and boiling point of the refrigerant, with dichlorodifluoromethane >chlorodifluoromethane >chlorotrifluoromethane >tetrafluoromethane >methane. These results suggest the possibility of exploiting these sorbents for separation of azeotropic mixtures of fluorocarbons and use in eco-friendly fluorocarbon-based adsorption cooling.

Authors:
; ; ; ; ; ; ; ;
Publication Date:
Sponsoring Org.:
USDOE Advanced Research Projects Agency - Energy (ARPA-E)
OSTI Identifier:
1211225
Resource Type:
Journal Article
Journal Name:
Nature Communications
Additional Journal Information:
Journal Volume: 5; Journal ID: ISSN 2041-1723
Country of Publication:
United States
Language:
English

Citation Formats

Motkuri, RK, Annapureddy, HVR, Vijaykumar, M, Schaef, HT, Martin, PF, McGrail, BP, Dang, LX, Krishna, R, and Thallapally, PK. Fluorocarbon adsorption in hierarchical porous frameworks. United States: N. p., 2014. Web. doi:10.1038/ncomms5368.
Motkuri, RK, Annapureddy, HVR, Vijaykumar, M, Schaef, HT, Martin, PF, McGrail, BP, Dang, LX, Krishna, R, & Thallapally, PK. Fluorocarbon adsorption in hierarchical porous frameworks. United States. https://doi.org/10.1038/ncomms5368
Motkuri, RK, Annapureddy, HVR, Vijaykumar, M, Schaef, HT, Martin, PF, McGrail, BP, Dang, LX, Krishna, R, and Thallapally, PK. 2014. "Fluorocarbon adsorption in hierarchical porous frameworks". United States. https://doi.org/10.1038/ncomms5368.
@article{osti_1211225,
title = {Fluorocarbon adsorption in hierarchical porous frameworks},
author = {Motkuri, RK and Annapureddy, HVR and Vijaykumar, M and Schaef, HT and Martin, PF and McGrail, BP and Dang, LX and Krishna, R and Thallapally, PK},
abstractNote = {Metal-organic frameworks comprise an important class of solid-state materials and have potential for many emerging applications such as energy storage, separation, catalysis and bio-medical. Here we report the adsorption behaviour of a series of fluorocarbon derivatives on a set of microporous and hierarchical mesoporous frameworks. The microporous frameworks show a saturation uptake capacity for dichlorodifluoromethane of >4 mmol g(-1) at a very low relative saturation pressure (P/P-o) of 0.02. In contrast, the mesoporous framework shows an exceptionally high uptake capacity reaching >14 mmol g(-1) at P/P-o of 0.4. Adsorption affinity in terms of mass loading and isosteric heats of adsorption is found to generally correlate with the polarizability and boiling point of the refrigerant, with dichlorodifluoromethane >chlorodifluoromethane >chlorotrifluoromethane >tetrafluoromethane >methane. These results suggest the possibility of exploiting these sorbents for separation of azeotropic mixtures of fluorocarbons and use in eco-friendly fluorocarbon-based adsorption cooling.},
doi = {10.1038/ncomms5368},
url = {https://www.osti.gov/biblio/1211225}, journal = {Nature Communications},
issn = {2041-1723},
number = ,
volume = 5,
place = {United States},
year = {Wed Jul 09 00:00:00 EDT 2014},
month = {Wed Jul 09 00:00:00 EDT 2014}
}