Mean induction time and isothermal kinetic analysis of methane hydrate formation in water and imidazolium based ionic liquid solutions
In this work, the performance of nine ionic liquids (ILs) as kinetic inhibitors for methane gas hydrates is investigated employing a high pressure micro differential scanning calorimeter (HPμDSC). Aqueous IL solutions of 0.01mass fraction, as well as poly vinyl pyrrolidone (PVP), are prepared and th...
Main Authors: | , , , , |
---|---|
Format: | Text |
Language: | unknown |
Published: |
Elsevier
2018
|
Subjects: | |
Online Access: | http://umkeprints.umk.edu.my/10837/ https://www.sciencedirect.com/science/article/pii/S0021961417303324 |
id |
ftunimalaysiakel:oai:umkeprints.umk.edu.my:10837 |
---|---|
record_format |
openpolar |
spelling |
ftunimalaysiakel:oai:umkeprints.umk.edu.my:10837 2023-05-15T17:11:19+02:00 Mean induction time and isothermal kinetic analysis of methane hydrate formation in water and imidazolium based ionic liquid solutions Nashed, Omar M. Sabil, Khalik Ismail, Lukman Japper-Jaafar, Azuraien Lal, Bhajan 2018-02 http://umkeprints.umk.edu.my/10837/ https://www.sciencedirect.com/science/article/pii/S0021961417303324 unknown Elsevier Nashed, Omar and M. Sabil, Khalik and Ismail, Lukman and Japper-Jaafar, Azuraien and Lal, Bhajan (2018) Mean induction time and isothermal kinetic analysis of methane hydrate formation in water and imidazolium based ionic liquid solutions. [Indexed Article] Indexed Article NonPeerReviewed 2018 ftunimalaysiakel 2020-05-30T20:01:33Z In this work, the performance of nine ionic liquids (ILs) as kinetic inhibitors for methane gas hydrates is investigated employing a high pressure micro differential scanning calorimeter (HPμDSC). Aqueous IL solutions of 0.01mass fraction, as well as poly vinyl pyrrolidone (PVP), are prepared and the induction time of methane hydrate formation in these solutions is measured at 7.1MPa and 258.15K. It is found that [BMIM][CF3SO3], [BMIM][CH3SO4], and [OH-EMIM][Br] can delay hydrate formation at this concentration. Their relative inhibition power (RIP) are higher than PVP. The other ILs exhibit shorter induction time when compare with the blank sample, which shows their promotional effect rather than inhibition effect. It is found that there is a strong correlation between molar mass of [BMIM]+ based ILs and induction time. An attempt to model the kinetic of methane hydrate formation in the presence of low dosage ILs has been carried out using Avrami model by utilizing isothermal hydrate crystallization data. The kinetic analysis shows the needle like the shape of the nuclei and the one dimensional crystal growth during the methane hydrate formation. The Avrami analysis also indicates that most of the crystallization process of methane hydrate is governed by the enclathration reaction and slightly leads by the diffusion-controlled mechanism. Text Methane hydrate UMK Repository (Universiti Malaysia Kelantan Institutional Repository - UMKIR) The Needle ENVELOPE(-64.047,-64.047,63.267,63.267) |
institution |
Open Polar |
collection |
UMK Repository (Universiti Malaysia Kelantan Institutional Repository - UMKIR) |
op_collection_id |
ftunimalaysiakel |
language |
unknown |
description |
In this work, the performance of nine ionic liquids (ILs) as kinetic inhibitors for methane gas hydrates is investigated employing a high pressure micro differential scanning calorimeter (HPμDSC). Aqueous IL solutions of 0.01mass fraction, as well as poly vinyl pyrrolidone (PVP), are prepared and the induction time of methane hydrate formation in these solutions is measured at 7.1MPa and 258.15K. It is found that [BMIM][CF3SO3], [BMIM][CH3SO4], and [OH-EMIM][Br] can delay hydrate formation at this concentration. Their relative inhibition power (RIP) are higher than PVP. The other ILs exhibit shorter induction time when compare with the blank sample, which shows their promotional effect rather than inhibition effect. It is found that there is a strong correlation between molar mass of [BMIM]+ based ILs and induction time. An attempt to model the kinetic of methane hydrate formation in the presence of low dosage ILs has been carried out using Avrami model by utilizing isothermal hydrate crystallization data. The kinetic analysis shows the needle like the shape of the nuclei and the one dimensional crystal growth during the methane hydrate formation. The Avrami analysis also indicates that most of the crystallization process of methane hydrate is governed by the enclathration reaction and slightly leads by the diffusion-controlled mechanism. |
format |
Text |
author |
Nashed, Omar M. Sabil, Khalik Ismail, Lukman Japper-Jaafar, Azuraien Lal, Bhajan |
spellingShingle |
Nashed, Omar M. Sabil, Khalik Ismail, Lukman Japper-Jaafar, Azuraien Lal, Bhajan Mean induction time and isothermal kinetic analysis of methane hydrate formation in water and imidazolium based ionic liquid solutions |
author_facet |
Nashed, Omar M. Sabil, Khalik Ismail, Lukman Japper-Jaafar, Azuraien Lal, Bhajan |
author_sort |
Nashed, Omar |
title |
Mean induction time and isothermal kinetic analysis of methane hydrate formation in water and imidazolium based ionic liquid solutions |
title_short |
Mean induction time and isothermal kinetic analysis of methane hydrate formation in water and imidazolium based ionic liquid solutions |
title_full |
Mean induction time and isothermal kinetic analysis of methane hydrate formation in water and imidazolium based ionic liquid solutions |
title_fullStr |
Mean induction time and isothermal kinetic analysis of methane hydrate formation in water and imidazolium based ionic liquid solutions |
title_full_unstemmed |
Mean induction time and isothermal kinetic analysis of methane hydrate formation in water and imidazolium based ionic liquid solutions |
title_sort |
mean induction time and isothermal kinetic analysis of methane hydrate formation in water and imidazolium based ionic liquid solutions |
publisher |
Elsevier |
publishDate |
2018 |
url |
http://umkeprints.umk.edu.my/10837/ https://www.sciencedirect.com/science/article/pii/S0021961417303324 |
long_lat |
ENVELOPE(-64.047,-64.047,63.267,63.267) |
geographic |
The Needle |
geographic_facet |
The Needle |
genre |
Methane hydrate |
genre_facet |
Methane hydrate |
op_relation |
Nashed, Omar and M. Sabil, Khalik and Ismail, Lukman and Japper-Jaafar, Azuraien and Lal, Bhajan (2018) Mean induction time and isothermal kinetic analysis of methane hydrate formation in water and imidazolium based ionic liquid solutions. [Indexed Article] |
_version_ |
1766068130519449600 |