Solubilities of Carbon Dioxide in Polyethylene Glycol Ethers

Abstract

New extensive data are reported for the solubility of carbon dioxide in fourteen physical solvents, and compared to two other solvents widely used in industry (selexol ® and sulfolane). The solubility data are expressed by Henry's law constants and have been measured at 25 °C, 40 °C and 60 °C, using an Autoclave cell. The study concludes that polyethylene glycol dimethyl ethers, and mixtures of these solvents are the best solvents for CO 2 removal.Les valeurs de la solubilité du dioxide de carbone dans quatorze solvants physiques sont reportées. Ces valeurs sont comparées avec la solubilté du dyoxide de carbone dans le sulfolane et le selexol ® . Les solubilités sont exprimées par les constantes de la loi d'Henry dans quatorze solvants et à des temperatures de 25 °C, 40 °C et 60 °C. L'étude conclue que les polyetylène-glycol dimetyleters et leurs mélanges sont les plus performants pour la décarbonatation du gaz.

Density, viscosity, and solubility of carbon dioxide in glymes

“…For polyethylene glycol ethers (glymes) such as diethylene glycol dimethyl ether (diglyme), triethylene glycol dimethyl ether (triglyme), and tetraethylene glycol dimethyl ether (tetraglyme), Sciamanna and Lynn [2] had previously reported about the carbon dioxide solubility between 3 and 100 kPa. Henni et al [3] had also measured Henry's law constant at 25, 40, and 60 • C by gas chromatographic analysis. However, there is no available use for the carbon dioxide solubility in glymes and saturated density data at high pressures.…”

Solubility of CO2 in CO2-philic oligomers; COSMOtherm predictions and experimental results

“…In other words, these liquid oligomers exhibit low two-phase pressure boundaries with CO 2 on the CO 2 -rich compositional end of the pressure-composition (Px) diagram. These candidates include poly ethylene glycol di-methyl ether (PEGDME) [10], poly propylene glycol di-methyl ether (PPGDME) [11,12], poly di-methyl siloxane (PDMS) [12] and perfluoro polyether (PFPE) [13]. The bubble point loci of these CO 2 -oligomer systems are determined over the entire range of compositions at 298.15 K. The bubble point values at the oligomer-rich end of the Px diagram will be used to assess the capacity of the solvent to absorb CO 2 , and to derive Henry's law coefficients for each solvent.…”

Abraham model correlations for describing solute transfer into 2-butoxyethanol from both water and the gas phase at 298K

“…As part of this study solubilities were also measured for 2-hydroxybenzoic acid, acetylsalicylic acid, 3,5-dinitro-2-methylbenzoic acid, acenaphthene, fluoranthene, trans-stilbene, xanthene, phenothiazine, 3,5-dinitrobenzoic acid, 3-chlorobenzoic acid, 2-methylbenzoic acid, 4-chloro-3-nitrobenzoic acid, 2-chloro-5-nitrobenzoic acid, benzoic acid, 4-aminobenzoic acid, benzil, thioxanthen-9-one, 3-nitrobenzoic acid, and diphenyl sulfone dissolved in 2-butoxyethanol at 298.15 K. The measured partition coefficients and solubilities, combined with published gas solubility data for carbon dioxide [52] and hydrogen gas [53], and our previously reported solubility data for anthracene [54], pyrene [55], benzoin [56], 3,4-dichlorobenzoic acid [57], 3,4-dimethoxybenzoic acid [58], 3-methylbenzoic acid [59], salicylamide [59], 4-nitrobenzoic acid [59], 2-methoxybenzoic acid [59], 4-methoxybenzoic acid [59], 4-chlorobenzoic acid [59], biphenyl [59] and 4-hydroxyacetanilide [59] dissolved in 2-butoxyethanol, were used to derive Abraham model correlations for both water-to-2-butoxyethanol partition coefficients (as log P) and gas-to-2-butoxyethanol partition coefficients (as log K).…”