The influence of bromide-based ionic liquids on solubility of {LiBr (1) + water (2)} system. Experimental (solid + liquid) phase equilibrium data. Part 1

Marta Królikowska , Tadeusz Hofman


In this work, nine ILs are investigated as anti-crystallization additives to (LiBr + water) binary systems conventionally used as a working pair in absorption refrigeration technology. The solubility of {LiBr (1) + IL (2) + water (3)} ternary systems within wide temperature and composition range was determined by the dynamic method. In this work, the following ILs: 1-ethyl-1-methylmorpholinium bromide, [C1C2MOR][Br], 1-butyl-1-methyl-morpholinium bromide, [C1C4MOR][Br], 1-hexyl-1-methylmorpholinium bromide, [C1C6MOR][Br], 1-butyl-3-methylimidazolium bromide, [C1C4IM][Br], 1-ethyl-1-methyl-piperidinium bromide, [C1C2PIP][Br], 1-butyl-1-methylpiperidinium bromide, [C1C4PIP][Br], 1-butyl-1-methyl-pyrrolidinium bromide, [C1C4PYR][Br], 1-butylpyridinium bromide, [C4Py][Br] and tri(ethyl)-butylammonium bromide, [N2,2,2,4][Br] were investigated. The experimental (solid + liquid) phase equilibria have been determined for different IL to LiBr mass fractions from w2 = (0.1 to 0.3). For all of the tested system, the transition point between lithium bromide dihydrate and monohydrate form was observed. Additionally, the simple model based on the multicomponent Redlich-Kister equation and a reference state of pure chemical compounds was used to successfully describe solubility of lithium bromide in aqueous systems containing an ionic liquid. The influence of ILs cation's core on the crystallization temperature of aqueous lithium bromide system was discussed and the best IL as an anti-crystallization additive has been proposed.
Author Marta Królikowska (FC / DPC)
Marta Królikowska,,
- Department Of Physical Chemistry
, Tadeusz Hofman (FC / DPC)
Tadeusz Hofman,,
- Department Of Physical Chemistry
Journal seriesJournal of Molecular Liquids, ISSN 0167-7322
Issue year2019
Publication size in sheets0.5
ASJC Classification2505 Materials Chemistry; 1606 Physical and Theoretical Chemistry; 1607 Spectroscopy; 3104 Condensed Matter Physics; 3107 Atomic and Molecular Physics, and Optics; 2504 Electronic, Optical and Magnetic Materials
ProjectDetermination of the possibility of replacing fluorinated refrigerants, with a global warming factor greater than or equal to 2500, to other in industrial refrigeration systems built in the plant of the Plock Plant.. Project leader: Ruciński Adam, , Phone: +48 22 234 52 51, end date 29-06-2017, ID/1066079/NR/220/2016, Completed
Languageen angielski
1-s2.0-S0167732218339692-main.pdf 1.92 MB
Score (nominal)100
Score sourcejournalList
ScoreMinisterial score = 100.0, 26-06-2020, ArticleFromJournal
Publication indicators Scopus Citations = 4; WoS Citations = 2; Scopus SNIP (Source Normalised Impact per Paper): 2018 = 1.275; WoS Impact Factor: 2018 = 4.561 (2) - 2018=4.136 (5)
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