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Polar-solvent fractionation of asphaltenes from heavy oil and their characterization

Petrova, L. M. / Abbakumova, N. A. / Zaidullin, I. M. / Borisov, D. N.

Abstract In accordance with the asphaltene fractionation scheme proposed, an oil residue with a boiling point above 250°C is mixed with acetone (acetone/residue ratio of 3: 1) and divided into two parts containing mainly high-molecular-mass (resin-asphaltene concentrate) and low-molecular-mass (deasphalted oil) components. From each part, asphaltenes are isolated with n-heptane (1: 40 v/v) and then separated in a Soxhlet apparatus with a 1.85: 1 (v/v) n-heptane/toluene mixture into two subfractions, insoluble and soluble in this mixture, respectively. This procedure has allowed four asphaltene subfractions to be isolated, which have different compositions as shown by Fourier-transform IR spectroscopy, matrix-assisted laser desorption/ionization mass spectrometry, and UV spectrophotometry.

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Polar-solvent fractionation of asphaltenes from heavy oil and their characterization

Petrova, L. M. / Abbakumova, N. A. / Zaidullin, I. M. / Borisov, D. N.

Abstract In accordance with the asphaltene fractionation scheme proposed, an oil residue with a boiling point above 250°C is mixed with acetone (acetone/residue ratio of 3: 1) and divided into two parts containing mainly high-molecular-mass (resin-asphaltene concentrate) and low-molecular-mass (deasphalted oil) components. From each part, asphaltenes are isolated with n-heptane (1: 40 v/v) and then separated in a Soxhlet apparatus with a 1.85: 1 (v/v) n-heptane/toluene mixture into two subfractions, insoluble and soluble in this mixture, respectively. This procedure has allowed four asphaltene subfractions to be isolated, which have different compositions as shown by Fourier-transform IR spectroscopy, matrix-assisted laser desorption/ionization mass spectrometry, and UV spectrophotometry.

Polar-solvent fractionation of asphaltenes from heavy oil and their characterization

Petrova, L. M. / Abbakumova, N. A. / Zaidullin, I. M. / Borisov, D. N.

Abstract In accordance with the asphaltene fractionation scheme proposed, an oil residue with a boiling point above 250°C is mixed with acetone (acetone/residue ratio of 3: 1) and divided into two parts containing mainly high-molecular-mass (resin-asphaltene concentrate) and low-molecular-mass (deasphalted oil) components. From each part, asphaltenes are isolated with n-heptane (1: 40 v/v) and then separated in a Soxhlet apparatus with a 1.85: 1 (v/v) n-heptane/toluene mixture into two subfractions, insoluble and soluble in this mixture, respectively. This procedure has allowed four asphaltene subfractions to be isolated, which have different compositions as shown by Fourier-transform IR spectroscopy, matrix-assisted laser desorption/ionization mass spectrometry, and UV spectrophotometry.

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Titel:

Polar-solvent fractionation of asphaltenes from heavy oil and their characterization

Beteiligte:

Petrova, L. M. (Autor:in) / Abbakumova, N. A. (Autor:in) / Zaidullin, I. M. (Autor:in) / Borisov, D. N. (Autor:in)

Erschienen in:

Petroleum Chemistry ; 53 ; 81-86

Erscheinungsdatum:

01.03.2013

Format / Umfang:

6 pages

ISSN:

1555-6239 , 0965-5441

DOI:

https://doi.org/10.1134/S0965544113020084

Medientyp:

Aufsatz (Zeitschrift)

Format:

Elektronische Ressource

Sprache:

Englisch

Schlagwörter:

asphaltene subfractions , aromaticity , molecular mass , stability of asphaltenes Chemistry , Industrial Chemistry/Chemical Engineering

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