The experimental study on the influence of crown ethers and glycols on the mutual solubility of lithium bromide in water

Marta Królikowska , Katarzyna Romańska

Abstract

In this paper, the continuation of our work on searching for anti-crystallization additives to the aqueous solution of lithium bromide is presented. This type of research is important from the viewpoint of absorption refrigeration technology to improve the performance of the efficiency of refrigeration equipment. In this study, three crown ethers: 12-crown-4, 15-crown-5, and 18-crown-6 as well as the glycols: ethylene glycol, diethylene glycol, triethylene glycol and glycerol were investigated as anti-crystallization additives for {LiBr (1) + water (2)} system, conventionally used as a working pair in absorption refrigeration technology. For this purpose, the solubility of lithium bromide in water has been determined in the presence of the organic additive. The solubility measurements have been carried out using a dynamic method at a wide temperature and composition range for different (additive to LiBr) initial mass fraction from = 0.1, 0.2 and 0.3. From experimental SLE data, the comparison range of the liquid state for tested systems at the absorber's working temperature was determined and compared to those from conventional (LiBr + water) system. Further measurements of vapor – liquid equilibria will be performed to select the best anti-crystallization additive.
Author Marta Królikowska (FC / DPC) - Thermodynamic Research Unit, School of Chemical Engineering
Marta Królikowska,,
- Department Of Physical Chemistry
, Katarzyna Romańska (FC / DPC)
Katarzyna Romańska,,
- Department Of Physical Chemistry
Journal seriesFluid Phase Equilibria, ISSN 0378-3812, (A 30 pkt)
Issue year2019
Vol483
Pages175-181
Publication size in sheets0.5
Keywords in EnglishAbsorption refrigeration(LiBr + water)Anti-crystallization additiveCrown etherGlycol
ASJC Classification1606 Physical and Theoretical Chemistry; 3100 General Physics and Astronomy; 1500 General Chemical Engineering
DOIDOI:10.1016/j.fluid.2018.11.036
URL https://www.sciencedirect.com/science/article/pii/S0378381218304953
Languageen angielski
File
1-s2.0-S0378381218304953-main.pdf 1.12 MB
Score (nominal)30
ScoreMinisterial score = 30.0, 13-08-2019, ArticleFromJournal
Publication indicators Scopus Citations = 0; WoS Citations = 0; Scopus SNIP (Source Normalised Impact per Paper): 2017 = 1.033; WoS Impact Factor: 2017 = 2.197 (2) - 2017=2.214 (5)
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