Solubility and Thermodynamic Parameters of H<sub>2</sub>S/CH<sub>4</sub> in Ionic Liquids Determined by <SUP>1</SUP>H NMR

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dc.contributor.authorZarraga, Jeannette
dc.contributor.authorZapata, Mariana
dc.contributor.authorIbarra, Darmenia
dc.contributor.authorDuarte, Darlin
dc.contributor.authorMorillo, Angel
dc.contributor.authorLlovera, Ligia
dc.contributor.authorGonzalez, Eduardo
dc.contributor.authorFerrer, Victor
dc.contributor.authorChirinos, Juan
dc.date.accessioned2025-01-20T17:09:33Z
dc.date.available2025-01-20T17:09:33Z
dc.date.issued2024
dc.description.abstractNatural gas remains an important global source of energy. Usually, sour gas from the well or refinery stream contains H2S among other contaminants that should be removed to fulfill permissible standards of use. Despite the use of different gas-liquid sour gas upgrading technologies, ionic liquids (ILs) have been recognized as promising materials to remove H2S from sour gas. However, data concerned with thermodynamic solution functions of H2S in ILs have scarcely been reported in the literature. In this work, solution H-1 NMR spectroscopy was employed for quantifying H2S soluble in [BMIM][Cl] and for gaining a better understanding of the H2S-IL interaction. Experiments were carried out in a Young-Tap NMR tube containing a saturated solution of H2S/CH4/[BMIM][Cl] and recording spectra from 298 to 333 K. The thermodynamic solution functions, determined from the Van't Hoff equation, showed that solubility of the H2S in the [BMIM][Cl] is an exothermic gas-liquid physisorption process (Delta H-sol degrees = -66.13 kJmol(-1)) with a negative entropy change (Delta S-sol degrees = -168.19 JK(-1) mol(-1)). H-1 NMR spectra of the H2S/[BMIM][Cl] solution show a feature of strong solute-solvent interactions. However, solubility enthalpy is a fifth of the H-S bond energy value. Results from H-1 NMR spectroscopy also agree with those from the bench dynamic experiments.
dc.fuente.origenWOS
dc.identifier.doi10.1021/acsomega.3c07594
dc.identifier.issn2470-1343
dc.identifier.urihttps://doi.org/10.1021/acsomega.3c07594
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/91053
dc.identifier.wosidWOS:001148087600001
dc.issue.numero3
dc.language.isoen
dc.pagina.final3595
dc.pagina.inicio3588
dc.revistaAcs omega
dc.rightsacceso restringido
dc.subject.ods03 Good Health and Well-being
dc.subject.odspa03 Salud y bienestar
dc.titleSolubility and Thermodynamic Parameters of H<sub>2</sub>S/CH<sub>4</sub> in Ionic Liquids Determined by <SUP>1</SUP>H NMR
dc.typeartículo
dc.volumen9
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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