eprintid: 8566
rev_number: 2
eprint_status: archive
userid: 1
dir: disk0/00/00/85/66
datestamp: 2023-11-09 16:20:28
lastmod: 2023-11-09 16:20:28
status_changed: 2023-11-09 16:12:57
type: article
metadata_visibility: show
creators_name: Khan, M.S.
creators_name: Bavoh, C.B.
creators_name: Partoon, B.
creators_name: Lal, B.
creators_name: Bustam, M.A.
creators_name: Shariff, A.M.
title: Thermodynamic effect of ammonium based ionic liquids on CO2 hydrates phase boundary
ispublished: pub
keywords: Carbon dioxide; Dissociation; Enthalpy; Hydration; Ionic liquids; Phase equilibria, CO2 hydrates; Hydrate dissociation; Hydrate equilibria; Inhibition effect; Inhibition mechanisms; Molecular levels; Semi-clathrate hydrates; Thermodynamic effect, Hydrates
note: cited By 104
abstract: In this experimental study, the phase boundary behavior of CO2 hydrate is reported in the presence of 1, 5, and 10 wt of three aqueous ammonium based ionic liquids (AILs) solutions. The T-cycle technique is used to measure the hydrate equilibrium conditions of AILs + CO2 + H2O hydrate systems within the ranges of 274�283 K and 1.80�4.20 MPa. All studied AILs inhibited CO2 hydrate with the inhibition effect increasing with AILs concentration. The 10 wt, TEAOH showed the highest inhibition effect with an average suppression temperature (� Ŧ) of 1.7 K, followed by TMACl (� Ŧ = 1.6 K) and then TPrAOH (� Ŧ = 1.2 K). Furthermore, COSMO-RS analysis is performed to understand the molecular level inhibition mechanism of AILs. In addition, the enthalpies of hydrate dissociation for all studied systems are also determined. The calculated hydrate dissociation enthalpies revealed that all the studied AILs show insignificant participation in CO2 hydrate cage formation at all concentrations, hence, do not form semi-clathrate hydrates. © 2017 Elsevier B.V.
date: 2017
publisher: Elsevier B.V.
official_url: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85019403644&doi=10.1016%2fj.molliq.2017.05.045&partnerID=40&md5=7757eca7f9735c08c00a253b68859840
id_number: 10.1016/j.molliq.2017.05.045
full_text_status: none
publication: Journal of Molecular Liquids
volume: 238
pagerange: 533-539
refereed: TRUE
issn: 01677322
citation:   Khan, M.S. and Bavoh, C.B. and Partoon, B. and Lal, B. and Bustam, M.A. and Shariff, A.M.  (2017) Thermodynamic effect of ammonium based ionic liquids on CO2 hydrates phase boundary.  Journal of Molecular Liquids, 238.  pp. 533-539.  ISSN 01677322