Issue 4, 2015

Tuning fluorocarbon adsorption in new isoreticular porous coordination frameworks for heat transformation applications

Abstract

Adsorption heat transformation is one of the most energy-efficient technologies, which relies much on the type and performance of the adsorbent–adsorbate pair. Here, we report adsorption behaviors of a typical fluorocarbon R22 (CHClF2) in a new series of isoreticular porous coordination polymers [Zn4O(bpz)2(ldc)], in which the typical Zn4O clusters are connected by hydrophobic 3,3′,5,5′-tetramethyl-4,4′-bipyrazolate (bpz2−) and different linear dicarboxylates (ldc2−) to form non-interpenetrated pcu networks with variable pore sizes, shapes, and volumes. Fluorocarbon sorption measurements of these materials revealed high R22 uptakes of 0.73–0.97 g g−1 (0.62–0.65 g cm−3) at 298 K and 1 bar and working capacities of 0.41–0.72 g g−1 (0.35–0.47 g cm−3) between 273 and 313 K at about 0.13, 0.11 and 0.52 bar, respectively, as well as very large diffusion coefficients of 5.1–7.3 × 10−7 cm2 s−1. Noteworthily, the R22 sorption performance can be dramatically improved by subtle modification of the pore size and shape, demonstrating porous coordination polymer–fluorocarbon as a promising adsorbent–adsorbate pair for heat transformation applications.

Graphical abstract: Tuning fluorocarbon adsorption in new isoreticular porous coordination frameworks for heat transformation applications

Supplementary files

Article information

Article type
Edge Article
Submitted
23 Dez 2014
Accepted
18 Feb 2015
First published
18 Feb 2015
This article is Open Access

All publication charges for this article have been paid for by the Royal Society of Chemistry
Creative Commons BY license

Chem. Sci., 2015,6, 2516-2521

Author version available

Tuning fluorocarbon adsorption in new isoreticular porous coordination frameworks for heat transformation applications

R. Lin, T. Li, H. Zhou, C. He, J. Zhang and X. Chen, Chem. Sci., 2015, 6, 2516 DOI: 10.1039/C4SC03985H

This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. You can use material from this article in other publications without requesting further permissions from the RSC, provided that the correct acknowledgement is given.

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