High solubilities of small hydrocarbons in trihexyl tetradecylphosphonium bis (2, 4, 4-trimethylpentyl) phosphinate

Xiangyang Liu; Waheed Afzal; Guangren Yu; Maogang He; John M Prausnitz

doi:10.1021/jp403460a

High solubilities of small hydrocarbons in trihexyl tetradecylphosphonium bis (2, 4, 4-trimethylpentyl) phosphinate

Xiangyang Liu, Waheed Afzal, Guangren Yu, Maogang He, John M Prausnitz

Engineering

Research output: Contribution to journal › Article › peer-review

33 Citations (Scopus)

Abstract

Experimental solubilities are reported for methane, ethane,
ethylene, propane, and propylene in trihexyl tetradecylphosphonium bis(2,4,4-
trimethylpentyl) phosphinate [P(14)666][TMPP] from 313 to 353 K up to 6.7
MPa. A literature review on solubilities of small hydrocarbons in ionic liquids
shows that solubilities in [P(14)666][TMPP] are appreciably larger than those in
other ionic liquids. Contrary to solubilities in ionic liquids studied earlier,
solubilities of paraffins (ethane and propane) in [P(14)666][TMPP] are larger
than those of the corresponding olefins (ethylene and propylene). Because, at fixed
temperature, the vapor pressure of an olefin is larger than that of the
corresponding paraffin, the relative volatility of the olefin exceeds that of the
corresponding paraffin, contrary to the relative volatility observed in conventional
extractive distillation with polar solvents where the volatility of the paraffin exceeds
that of the corresponding olefin.

Original language	English
Pages (from-to)	10534-10539
Number of pages	6
Journal	The Journal of Physical Chemistry B
Volume	117
Issue number	36
DOIs	https://doi.org/10.1021/jp403460a
Publication status	Published - 15 Aug 2013

Keywords

High Solubilities
Small Hydrocarbons
Iconic liquids

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title = "High solubilities of small hydrocarbons in trihexyl tetradecylphosphonium bis (2, 4, 4-trimethylpentyl) phosphinate",

abstract = "Experimental solubilities are reported for methane, ethane,ethylene, propane, and propylene in trihexyl tetradecylphosphonium bis(2,4,4-trimethylpentyl) phosphinate [P(14)666][TMPP] from 313 to 353 K up to 6.7MPa. A literature review on solubilities of small hydrocarbons in ionic liquidsshows that solubilities in [P(14)666][TMPP] are appreciably larger than those inother ionic liquids. Contrary to solubilities in ionic liquids studied earlier,solubilities of paraffins (ethane and propane) in [P(14)666][TMPP] are largerthan those of the corresponding olefins (ethylene and propylene). Because, at fixedtemperature, the vapor pressure of an olefin is larger than that of thecorresponding paraffin, the relative volatility of the olefin exceeds that of thecorresponding paraffin, contrary to the relative volatility observed in conventionalextractive distillation with polar solvents where the volatility of the paraffin exceedsthat of the corresponding olefin.",

keywords = "High Solubilities, Small Hydrocarbons, Iconic liquids",

author = "Xiangyang Liu and Waheed Afzal and Guangren Yu and Maogang He and Prausnitz, {John M}",

year = "2013",

month = aug,

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doi = "10.1021/jp403460a",

language = "English",

volume = "117",

pages = "10534--10539",

journal = "The Journal of Physical Chemistry B",

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TY - JOUR

T1 - High solubilities of small hydrocarbons in trihexyl tetradecylphosphonium bis (2, 4, 4-trimethylpentyl) phosphinate

AU - Liu, Xiangyang

AU - Afzal, Waheed

AU - Yu, Guangren

AU - He, Maogang

AU - Prausnitz, John M

PY - 2013/8/15

Y1 - 2013/8/15

N2 - Experimental solubilities are reported for methane, ethane,ethylene, propane, and propylene in trihexyl tetradecylphosphonium bis(2,4,4-trimethylpentyl) phosphinate [P(14)666][TMPP] from 313 to 353 K up to 6.7MPa. A literature review on solubilities of small hydrocarbons in ionic liquidsshows that solubilities in [P(14)666][TMPP] are appreciably larger than those inother ionic liquids. Contrary to solubilities in ionic liquids studied earlier,solubilities of paraffins (ethane and propane) in [P(14)666][TMPP] are largerthan those of the corresponding olefins (ethylene and propylene). Because, at fixedtemperature, the vapor pressure of an olefin is larger than that of thecorresponding paraffin, the relative volatility of the olefin exceeds that of thecorresponding paraffin, contrary to the relative volatility observed in conventionalextractive distillation with polar solvents where the volatility of the paraffin exceedsthat of the corresponding olefin.

AB - Experimental solubilities are reported for methane, ethane,ethylene, propane, and propylene in trihexyl tetradecylphosphonium bis(2,4,4-trimethylpentyl) phosphinate [P(14)666][TMPP] from 313 to 353 K up to 6.7MPa. A literature review on solubilities of small hydrocarbons in ionic liquidsshows that solubilities in [P(14)666][TMPP] are appreciably larger than those inother ionic liquids. Contrary to solubilities in ionic liquids studied earlier,solubilities of paraffins (ethane and propane) in [P(14)666][TMPP] are largerthan those of the corresponding olefins (ethylene and propylene). Because, at fixedtemperature, the vapor pressure of an olefin is larger than that of thecorresponding paraffin, the relative volatility of the olefin exceeds that of thecorresponding paraffin, contrary to the relative volatility observed in conventionalextractive distillation with polar solvents where the volatility of the paraffin exceedsthat of the corresponding olefin.

KW - High Solubilities

KW - Small Hydrocarbons

KW - Iconic liquids

U2 - 10.1021/jp403460a

DO - 10.1021/jp403460a

M3 - Article

VL - 117

SP - 10534

EP - 10539

JO - The Journal of Physical Chemistry B

JF - The Journal of Physical Chemistry B

SN - 1520-6106

IS - 36

ER -