Removal of small hydrocarbons (ethane, propane, butane) from natural gas streams using the ionic liquid 1-ethyl-3 -methylimidazolium tris(pentafluoroethyl)trifluorophosphate

Mamoun Althuluth; Maria Teresa Mota-Martinez; Abdallah Berrouk; Maaike C. Kroon; Cor J. Peters

doi:10.1016/j.supflu.2014.02.006

Removal of small hydrocarbons (ethane, propane, butane) from natural gas streams using the ionic liquid 1-ethyl-3 -methylimidazolium tris(pentafluoroethyl)trifluorophosphate

Mamoun Althuluth
, Maria Teresa Mota-Martinez
, Abdallah Berrouk
, Maaike C. Kroon
, Cor J. Peters

Mechanical & Nuclear Engineering

Eindhoven University of Technology

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

30 Scopus citations

Abstract

From our earlier work it was found that the ionic liquid (IL) 1-ethyl-3-methylimidazolium tris(pentafluoroethyl)trifluorophosphate ([emim][FAP]) shows a very high carbon dioxide (CO₂) solubility and a low methane (CH₄) solubility, with the consequence that this ionic liquid has a high CO₂/CH₄ selectivity (M. Althuluth, M.C. Kroon, C.J. Peters, Ind. Eng. Chem. Res., 2012, (51), pp 16709-16712). In this paper we measure for the first time the absorption capacity in the same IL of other small hydrocarbons, e.g. ethane (C₂H₆), propane (C₃H₈) and butane (C₄H₁₀). The solubility of these hydrocarbons in [emim][FAP] has been determined as a function of temperature and concentration by measuring bubble points and cloud points in a temperature window of 290-365 K and at pressures up to 10 MPa, using a synthetic method. It was observed that at similar conditions the solubility decreases in the following order: C₄H₁₀ > CO ₂ > C₃H₈ > C₂H₆ > CH₄. Maximum selectivities for CO₂/hydrocarbon separations are established at the lowest temperatures. A comparison of the absorption enthalpies of the various hydrocarbons studied in this work showed that C₄H₁₀ has the highest value (Δhabs).

Original language	British English
Pages (from-to)	65-72
Number of pages	8
Journal	Journal of Supercritical Fluids
Volume	90
DOIs	https://doi.org/10.1016/j.supflu.2014.02.006
State	Published - Jun 2014

Keywords

Carbon Dioxide
Gas separation
Hydrocarbons
Ionic liquid
Liquid-liquid immiscibility
Phase behavior

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10.1016/j.supflu.2014.02.006

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@article{7bbb765a47304d4fbd11e51b7bb6af4c,

title = "Removal of small hydrocarbons (ethane, propane, butane) from natural gas streams using the ionic liquid 1-ethyl-3 -methylimidazolium tris(pentafluoroethyl)trifluorophosphate",

abstract = "From our earlier work it was found that the ionic liquid (IL) 1-ethyl-3-methylimidazolium tris(pentafluoroethyl)trifluorophosphate ([emim][FAP]) shows a very high carbon dioxide (CO2) solubility and a low methane (CH4) solubility, with the consequence that this ionic liquid has a high CO2/CH4 selectivity (M. Althuluth, M.C. Kroon, C.J. Peters, Ind. Eng. Chem. Res., 2012, (51), pp 16709-16712). In this paper we measure for the first time the absorption capacity in the same IL of other small hydrocarbons, e.g. ethane (C2H6), propane (C3H8) and butane (C4H10). The solubility of these hydrocarbons in [emim][FAP] has been determined as a function of temperature and concentration by measuring bubble points and cloud points in a temperature window of 290-365 K and at pressures up to 10 MPa, using a synthetic method. It was observed that at similar conditions the solubility decreases in the following order: C4H10 > CO 2 > C3H8 > C2H6 > CH4. Maximum selectivities for CO2/hydrocarbon separations are established at the lowest temperatures. A comparison of the absorption enthalpies of the various hydrocarbons studied in this work showed that C4H10 has the highest value (Δhabs).",

keywords = "Carbon Dioxide, Gas separation, Hydrocarbons, Ionic liquid, Liquid-liquid immiscibility, Phase behavior",

author = "Mamoun Althuluth and Mota-Martinez, \{Maria Teresa\} and Abdallah Berrouk and Kroon, \{Maaike C.\} and Peters, \{Cor J.\}",

note = "Funding Information: The authors gratefully acknowledge the Gas Research Center (GRC), the Petroleum Institute (PI) in Abu Dhabi and Shell B.V. (Amsterdam and Abu Dhabi) for their financial support. The authors acknowledge the use of the Thermolab at Delft University of Technology and E.J.M. Straver for his support during the experimentation.",

year = "2014",

month = jun,

doi = "10.1016/j.supflu.2014.02.006",

language = "British English",

volume = "90",

pages = "65--72",

journal = "Journal of Supercritical Fluids",

issn = "0896-8446",

publisher = "Elsevier B.V.",

}

Removal of small hydrocarbons (ethane, propane, butane) from natural gas streams using the ionic liquid 1-ethyl-3 -methylimidazolium tris(pentafluoroethyl)trifluorophosphate. / Althuluth, Mamoun; Mota-Martinez, Maria Teresa; Berrouk, Abdallah et al.
In: Journal of Supercritical Fluids, Vol. 90, 06.2014, p. 65-72.

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

TY - JOUR

T1 - Removal of small hydrocarbons (ethane, propane, butane) from natural gas streams using the ionic liquid 1-ethyl-3 -methylimidazolium tris(pentafluoroethyl)trifluorophosphate

AU - Althuluth, Mamoun

AU - Mota-Martinez, Maria Teresa

AU - Berrouk, Abdallah

AU - Kroon, Maaike C.

AU - Peters, Cor J.

N1 - Funding Information: The authors gratefully acknowledge the Gas Research Center (GRC), the Petroleum Institute (PI) in Abu Dhabi and Shell B.V. (Amsterdam and Abu Dhabi) for their financial support. The authors acknowledge the use of the Thermolab at Delft University of Technology and E.J.M. Straver for his support during the experimentation.

PY - 2014/6

Y1 - 2014/6

N2 - From our earlier work it was found that the ionic liquid (IL) 1-ethyl-3-methylimidazolium tris(pentafluoroethyl)trifluorophosphate ([emim][FAP]) shows a very high carbon dioxide (CO2) solubility and a low methane (CH4) solubility, with the consequence that this ionic liquid has a high CO2/CH4 selectivity (M. Althuluth, M.C. Kroon, C.J. Peters, Ind. Eng. Chem. Res., 2012, (51), pp 16709-16712). In this paper we measure for the first time the absorption capacity in the same IL of other small hydrocarbons, e.g. ethane (C2H6), propane (C3H8) and butane (C4H10). The solubility of these hydrocarbons in [emim][FAP] has been determined as a function of temperature and concentration by measuring bubble points and cloud points in a temperature window of 290-365 K and at pressures up to 10 MPa, using a synthetic method. It was observed that at similar conditions the solubility decreases in the following order: C4H10 > CO 2 > C3H8 > C2H6 > CH4. Maximum selectivities for CO2/hydrocarbon separations are established at the lowest temperatures. A comparison of the absorption enthalpies of the various hydrocarbons studied in this work showed that C4H10 has the highest value (Δhabs).

AB - From our earlier work it was found that the ionic liquid (IL) 1-ethyl-3-methylimidazolium tris(pentafluoroethyl)trifluorophosphate ([emim][FAP]) shows a very high carbon dioxide (CO2) solubility and a low methane (CH4) solubility, with the consequence that this ionic liquid has a high CO2/CH4 selectivity (M. Althuluth, M.C. Kroon, C.J. Peters, Ind. Eng. Chem. Res., 2012, (51), pp 16709-16712). In this paper we measure for the first time the absorption capacity in the same IL of other small hydrocarbons, e.g. ethane (C2H6), propane (C3H8) and butane (C4H10). The solubility of these hydrocarbons in [emim][FAP] has been determined as a function of temperature and concentration by measuring bubble points and cloud points in a temperature window of 290-365 K and at pressures up to 10 MPa, using a synthetic method. It was observed that at similar conditions the solubility decreases in the following order: C4H10 > CO 2 > C3H8 > C2H6 > CH4. Maximum selectivities for CO2/hydrocarbon separations are established at the lowest temperatures. A comparison of the absorption enthalpies of the various hydrocarbons studied in this work showed that C4H10 has the highest value (Δhabs).

KW - Carbon Dioxide

KW - Gas separation

KW - Hydrocarbons

KW - Ionic liquid

KW - Liquid-liquid immiscibility

KW - Phase behavior

UR - https://www.scopus.com/pages/publications/84898457819

U2 - 10.1016/j.supflu.2014.02.006

DO - 10.1016/j.supflu.2014.02.006

M3 - Article

AN - SCOPUS:84898457819

SN - 0896-8446

VL - 90

SP - 65

EP - 72

JO - Journal of Supercritical Fluids

JF - Journal of Supercritical Fluids

ER -

Removal of small hydrocarbons (ethane, propane, butane) from natural gas streams using the ionic liquid 1-ethyl-3 -methylimidazolium tris(pentafluoroethyl)trifluorophosphate

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Keywords

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