Popp S, Bösmann A, Woelfel R, Wasserscheid P (2015)
Publication Status: Published
Publication Type: Journal article
Publication year: 2015
Publisher: American Chemical Society
Book Volume: 3
Pages Range: 750-757
DOI: 10.1021/acssuschemeng.5b00062
Due to the known corrosion and crystallization issues of LiBr/H2O, the state-of-the-art working pair in sorption heat pump (SHP) systems, research into alternative working pairs is of high practical relevance. We have studied a wide range of ionic liquids (ILs) for this application in order to find potential new systems with enhanced performance. The screening was conducted with a focus on vapor pressure measurements of, in total, 74 examined working pairs. As common vapor liquid-equilibrium measurements are very precise but rather time-consuming, we developed a new setup allowing a fast relative determination of humidities with very small sample volumes for screening purposes. By this method we identified seventeen IL/H2O working pairs fulfilling the technical relevant criterion of a water vapor pressure p(H2O) <= 10 mbar at T = 308 K with an IL content of less than 80 wt % (wm < 0.8). Further evaluation of these candidates with respect to their thermal stability and viscosity allowed us to identify [MMIM][HCOO]/H2O, [MIVIIM][OAc]/H2O, [M.MININC2H5COO]/H2O, [Me4N][HCOO]/H2O, [Me4N][OAc]/ H2O and [Me4N] [C2H5COO]/H2O as the most promising IL/H2O systems for a possible application in SHP systems.
APA:
Popp, S., Bösmann, A., Woelfel, R., & Wasserscheid, P. (2015). Screening of Ionic Liquid/H2O Working Pairs for Application in Low Temperature Driven Sorption Heat Pump Systems. ACS Sustainable Chemistry & Engineering, 3, 750-757. https://dx.doi.org/10.1021/acssuschemeng.5b00062
MLA:
Popp, Sabine, et al. "Screening of Ionic Liquid/H2O Working Pairs for Application in Low Temperature Driven Sorption Heat Pump Systems." ACS Sustainable Chemistry & Engineering 3 (2015): 750-757.
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