Self-organization behavior of asphaltene molecules in heavy oils with varying the oil: Precipitant ratio

Petroleum Chemistry, July 2013, Volume 53, Issue 4, pp 220-224
Self-organization behavior of asphaltene molecules in heavy oils with varying the oil: Precipitant ratio
Yu. M. Ganeeva, T. N. Yusupova, V. I. Morozov, G. V. Romanov
Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center, Russian Academy of Sciences, Kazan SC RAS, Russia
Abstract
Reports an investigation ofAshal’chinskoe and Mordovo-Karmal’skoe crude oils and their components using thermal analysis and ESR spectroscopy.
Researchers derived two sets of asphaltene fractions (I and II) directly from the oils as such, via the two-step addition of 40-fold excess of a precipitant with varying the oil: precipitant ratio in the first step to be 1 : 5, 1 : 10, and 1 : 20. A comprehensive analysis of the results of studying the oils and asphaltene fractions revealed specific features of aggregation of asphaltenes in different oils.
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