Table of Contents
Journal of Petroleum Engineering
Volume 2013, Article ID 203036, 5 pages
Research Article

Dispersing of Petroleum Asphaltenes by Acidic Ionic Liquid and Determination by UV-Visible Spectroscopy

1Department of Chemistry, Faculty of Sciences, Shahid Chamran University, Ahvaz 61357-43337, Iran
2Department of Chemistry, Payame Noor University, P.O. BOX 19395-4697, Tehran, Iran

Received 31 December 2012; Revised 23 February 2013; Accepted 25 February 2013

Academic Editor: Jorge Ancheyta

Copyright © 2013 Eshagh Rezaee Nezhad et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Nowadays, constructing a mechanism to prevent the aggregation petroleum asphaltenes by the use of new acidic ionic liquids has become of fundamental importance. In this research, 3-(2-carboxybenzoyl)-1-methyl-1H-imidazol-3-ium chloride ([CbMIM] [Cl]) and other ionic liquids such as [CbMIM]BF4, [HMIM]Cl, [BMIM]Br, and [HMIM]HSO4 were tested. It should be noted that during the experiment the presence of the acidic ionic liquid moiety enhanced interactions between asphaltenes and acidic ionic liquids and it greatly limited asphaltene aggregation. We considered parameters such as temperature, amount of dispersant, effect of water: toluene ratio, the stirring time and effects of other ionic liquids, and determination of concentration of petroleum asphaltenes after dispersing by acidic ionic liquid under various parameters using UV-Visible spectroscopy.