Exceptional Fluorocarbon Uptake with Mesoporous Metal-Organic Frameworks for Adsorption-Based Cooling Systems

Journal Article · Mon Nov 26 00:00:00 EST 2018 · ACS Applied Energy Materials

DOI:https://doi.org/10.1021/acsaem.8b01282· OSTI ID:1556868

Zheng, Jian  ^[1]; Barpaga, Dushyant ^[1]; Gutierrez, Oliver Y. ^[2]; Browning, Nigel D. ^[3]; Mehdi, Beata L. ^[1]; Farha, Omar ^[4]; Lercher, Johannes A.  ^[1]; McGrail, Bernard P. ^[1]; Motkuri, Radha K.  ^[1]

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1. BATTELLE (PACIFIC NW LAB)
2. Technische Universitat Munchen
3. University of Liverpool
4. Northwestern University

For the first time, a series of well-reported mesoporous metal–organic frameworks (MOFs) have been tested for R134a fluorocarbon adsorption. Differences in sorption behavior were attributed to varying porosities and topologies. All mesoporous MOFs exhibited excellent, reversible R134a adsorption capacities and among them, NU-1000 provided an exceptional fluorocarbon uptake of ~170 wt% near saturation, which is among the highest values reported so far for MOFs. N2 sorption, high-resolution STEM, and micro calorimetry were used to further explore the relation between the features of NU-1000 and the exceptionally high R134a uptake capacity. Such high performance materials with the appropriate equilibrium isotherm behavior provide significant potential for adsorption cooling systems operating on pressure swing cycles. These results provide evidence that mesoporous MOFs, especially those with hierarchical structure, are promising candidates for chiller applications.

• Research Organization: Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-76RL01830
• OSTI ID: 1556868
• Report Number(s): PNNL-SA-132663
• Journal Information: ACS Applied Energy Materials, Vol. 1, Issue 11
• Country of Publication: United States
• Language: English

Related Subjects

adsorption cooling
fluorocarbons
mesoporous
metal-organic frameworks