Experimental and modelling studies on thermodynamic methane hydrate inhibition in the presence of ionic liquids

Nashed, O. and Dadebayev, D. and Khan, M.S. and Bavoh, C.B. and Lal, B. and Shariff, A.M. (2018) Experimental and modelling studies on thermodynamic methane hydrate inhibition in the presence of ionic liquids. Journal of Molecular Liquids, 249 . pp. 886-891.

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This paper presents a series of experimental and modelling studies on the thermodynamic inhibition effects of four ionic liquids on the methane hydrate formation. The investigated ionic liquids are 1-methyl-3-octylimidazolium chloride MOIM-Cl, 1-methylimidazolium hydrogen sulfate H-MIM-HSO4, tetraethylammonium iodide TEA-I, and 1-hexyl-3-methylimidazolium iodide HMIM-I. The impact of 0.1 mass fraction concentration ionic liquids on the methane hydrate phase boundary was evaluated by measuring the dissociation temperature of methane hydrate in the pressure range of 5.1�11.1 MPa, using a high pressure differential scanning calorimeter. The molar dissociation enthalpy of methane hydrates was calculated using the Clausius�Clapeyron equation. The density was measured for 0.10 mass fraction of aqueous solutions of ionic liquids at 293.15 K, and then compared to the commercially available gas hydrate inhibitors. The results demonstrated that 1-methylimidazolium hydrogen sulfate H-MIM-HSO4 has the highest inhibitory performance among the four ionic liquids considered. Moreover, the Dickens and Quinby-Hunt (electrolyte) model was applied to predict the phase equilibrium data of the studied ILs. The predicted data is in agreement with the experimental data. © 2017

Item Type:Article
Impact Factor:cited By 3
Uncontrolled Keywords:Chlorine compounds; Density (specific gravity); Differential scanning calorimetry; Dissociation; Electrolytes; Enthalpy; Gas hydrates; Hydration; Ionic liquids; Liquids; Methane; Phase equilibria; Solutions; Sulfur compounds; Thermodynamics, Clapeyron equations; Dissociation enthalpies; Dissociation temperature; Hydrate inhibitors; Methane hydrates; Phase equilibrium data; Tetraethylammonium; Thermodynamic inhibitors, Density of liquids
Departments / MOR / COE:Research Institutes > Institute for Contaminant Management
ID Code:21903
Deposited By: Ahmad Suhairi
Deposited On:01 Aug 2018 01:13
Last Modified:10 Jan 2019 06:47

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