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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Use of 1-butyl-3-methylimidazolium-based ionic liquids as methane hydrate inhibitors at high pressure conditions

Full text
Author(s):
Sanches de Menezes, Davi Eber [1] ; Pessoa Filho, Pedro de Alcantara [1] ; Robustillo Fuentes, Maria Dolores [1]
Total Authors: 3
Affiliation:
[1] Univ Sao Paulo, Engn Sch, Dept Chem Engn, Av Prof Luciano Gualberto 380, BR-05508010 Sao Paulo, SP - Brazil
Total Affiliations: 1
Document type: Journal article
Source: Chemical Engineering Science; v. 212, FEB 2 2020.
Web of Science Citations: 0
Abstract

The performance of 1-Butyl-3-methylimidazolium chloride ({[}BMIM]{[}Cl]) and 1-Butyl-3-methyl-imidazolium bromide ({[}BMIM]{[}Br]) as methane hydrate inhibitors is evaluated in this work. New hydrate dissociation data were obtained through high-pressure calorimetry for aqueous solutions with inhibitor mole fractions of 1.0%, 5.0%, 10.0%, and 15.0% and pressures from 9.6 to 100 MPa. Challenging situations from the experimental point of view were also explored. These ionic liquids are known to be both kinetic and thermodynamic inhibitors, but they promote hydrate growth at mole fractions of 1% and 5% in the pressure range studied. The effectiveness of these ionic liquids as thermodynamic inhibitors at high pressures is compared to that of methanol, a commercial inhibitor commonly used in the oil and gas industry. {[}BMIM]{[}Cl] is more effective than {[}BMIM]{[}Br] and methanol, considering equimolar aqueous solutions, even though methanol is more effective for solutions with the same mass fraction. (C) 2019 Elsevier Ltd. All rights reserved. (AU)

FAPESP's process: 17/01351-2 - Structural study of gas hydrates at high pressures
Grantee:Davi Éber Sanches de Menezes
Support type: Scholarships abroad - Research Internship - Doctorate (Direct)
FAPESP's process: 15/23148-9 - Thermodynamic study on gas hydrate formation and dissociation
Grantee:Davi Éber Sanches de Menezes
Support type: Scholarships in Brazil - Doctorate (Direct)
FAPESP's process: 14/02140-7 - Study on the formation and dissociation of gas hydrates
Grantee:Maria Dolores Robustillo Fuentes
Support type: Research Grants - Young Investigators Grants
FAPESP's process: 14/25740-0 - Study on the formation and dissociation of gas hydrates at high pressure
Grantee:Maria Dolores Robustillo Fuentes
Support type: Scholarships in Brazil - Young Researchers