Journal of Thermal Analysis and Calorimetry
Volume/Issue:
Volume 95: Issue 1
Survey on ionic liquids effect based on metal anions over the thermal stability of heavy oil
Authors:
J. Murillo-Hernández IMP, Instituto Mexicano del Petróleo (IMP) Posgrade Academic Program Eje Central Lázaro Cárdenas Norte 152 Col. San Bartolo Atepehuacan México D.F. 07730 México

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S. López-Ramírez IMP, Instituto Mexicano del Petróleo (IMP) Molecular Engineering Research Program Eje Central Lázaro Cárdenas Norte 152 Col. San Bartolo Atepehuacan México D.F. 07730 México

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J. Domínguez IMP, Instituto Mexicano del Petróleo (IMP) Molecular Engineering Research Program Eje Central Lázaro Cárdenas Norte 152 Col. San Bartolo Atepehuacan México D.F. 07730 México

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C. Duran-Valencia IMP, Instituto Mexicano del Petróleo (IMP) Hydrocarbon Recovery Research Program Eje Central Lázaro Cárdenas Norte 152 Col. San Bartolo Atepehuacan México D.F. 07730 México

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I. García-Cruz IMP, Instituto Mexicano del Petróleo (IMP) Molecular Engineering Research Program Eje Central Lázaro Cárdenas Norte 152 Col. San Bartolo Atepehuacan México D.F. 07730 México

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J. González-Guevara GTE-PEP-PEMEX Av. Marina Nacional 329 Col. Huasteca Delegación Miguel Hidalo C.P 11311 México

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Pages:
173–179
Online Publication Date:
20 Sep 2008
Publication Date:
01 Jan 2009
Article Category:
Research Article
DOI:
https://doi.org/10.1007/s10973-007-8919-5
Keywords:
ab initio calculations; enhanced recovery; heavy crude; ionic liquids; molecular structure; thermal analysis
Restricted access

Abstract  

A survey on the effect of ionic liquids (ILs) over the thermal stability of a heavy Mexican oil was performed. ILs used were based on [Cnim]+ and [Cnpyr]+ organic cations with FeCl4− metal anion. Mixtures of heavy crude oil (HCO) with ILs show three oxidation zones: low temperature oxidation (LTO), full deposition (FD) and high temperature oxidation (HTO). Thermal stability and mass loss decrease in the LTO zone but increase in the FD and HTO zones for every ILs used. The activation energy of the oxidation is influenced by the ILs in the HTO zone. It decreases when increasing the size of the organic radical substitute in the cation of the ILs while it increases with the presence of hydroxyl groups. The influence of electronic structure and reactivity indexes are rationalized to understand the variations of activation energy obtained of the reaction systems. Among all cations used, cation-3 (IL-3) shows the greater value of HOMO-LUMO gap as well as the lower activation energy.

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Cover Journal of Thermal Analysis and Calorimetry
Journal of Thermal Analysis and Calorimetry
Print ISSN:
1388-6150
Online ISSN:
1572-8943

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Journal of Thermal Analysis and Calorimetry
Language English
Size A4
Year of
Foundation		 1969
Volumes
per Year		 1
Issues
per Year		 24
Founder Akadémiai Kiadó
Founder's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher		 Chief Executive Officer, Akadémiai Kiadó
ISSN 1388-6150 (Print)
ISSN 1588-2926 (Online)

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