Abstract
Asphaltenes derived from oxidized asphalts are separated into five fractions that differ in solubility. The amount of the low-molecular-mass fraction in the asphaltenes does not exceed 20%, and that of the high-molecular-mass fraction is above 50 wt %. The high and low-molecular-mass fractions of the asphaltenes are studied by EPR spectroscopy, thermal analysis, and calorimetry. It is found that the high molecularmass fraction of the asphaltenes is characterized by a high amount of condensed aromatic structures; it has a tendency to form mesophases with different thermal stability and is responsible for the formation of ordered structures in asphalt. It is revealed that an increase in the amount of the high molecular-mass fraction in asphaltenes of oxidized petroleum asphalts leads to a decrease in their stability, which has an adverse effect on the stability of physicochemical characteristics and quality of the commercial products. It should be noted that this dependence is more pronounced for structured asphalts.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
A. M. Syroezhko, O. Yu. Begak, V. V. Fedorov, et al., Zh. Prikl. Khim. 75, 1559 (2002).
S. V. Kotov, S. V. Levanova, Z. R. Madumarova, et al., Neftekhimiya 48, 45 (2008) [Pet. Chem. 48, 46 (2008)].
A. A. Gorbatovskii, D. A. Rozental’, and S. V. Dronov, Zh. Prikl. Khim. 80, 862 (2007).
Z. I. Syunyaev, Disperse Petroleum Systems (Khimiya, Moscow, 1990) [in Russian].
E. Buenrostro-Gonzalez, S. I. Andersen, J. A. Garcia- Martinez, and C. Lira-Galena, Energy Fuels 16, 732 (2002).
M. Fossen, H. Kallevik, K. D. Knudsen, and J. Sjoblom, Energy Fuels 21, 1030 (2007).
S. I. Andersen, J. O. Jensen, and J. G. Speight, Energy Fuels 19, 2371 (2005).
M. Tojima, S. Suhara, M. Imamura, and A. Furuta, Catal. Today 43, 347 (1998).
P. Wattana, H. S. Fogler, A. Yen, et al., Energy Fuels 19, 101 (2005).
R. Venkatesan, J.-A. Ostlund, H. Chawla, et al., Energy Fuels 17, 1630 (2003).
L. M. Gokhman, Complex Organic Binders Based on SBS Block Copolymers (ZAO EKON-INFORM, Moscow, 2004) [in Russian].
E. S. Okhotnikova, R. A. Mukhamadiev, T. N. Yusupova, et al., in Proceedings of International Conference on Oil and Gas Chemistry (Tomsk, 2009), p. 762 [in Russian].
Modern Petroleum Investigation Techniques, Ed. by A. I. Bogomolov (Nedra, Leningrad, 1984) [in Russian].
T. N. Yusupova, L. M. Petrova, and Yu. M. Ganeeva, Neftekhimiya 39, 254 (1999) [Pet. Chem. 39, 227 (1999)].
E. E. Barskaya and T. N. Yusupova, Tekhnol. Nefti Gaza, No. 2, 39 (2008).
K. Baginska and I. Gawel, Fuel Process. Technol. 85, 1453 (2004).
G. Andreatta, C. C. Goncalves, G. Buffin, et al., Energy Fuels 19, 1282 (2005).
J.-F. Masson, V. Leblond, and J. Margeson, J. Microscopy 221, 17 (2006).
A. Jager, R. Lackner, Ch. Eisenmenger-Sittner, and R. Blab, Road Material and Pavement Design. EATA, 9 (2004).
Yu. M. Ganeeva, T. N. Yusupova, and G. V. Romanov, Dokl. Akad. Nauk, No. 5, 629 (2009).
Author information
Authors and Affiliations
Corresponding author
Additional information
Original Russian Text © E.S. Okhotnikova, Yu.M. Ganeeva, T.N. Yusupova, V.I. Morozov, I.N. Frolov, G.V. Romanov, 2011, published in Neftekhimiya, 2011, Vol. 51, No. 3, pp. 199–203.
Rights and permissions
About this article
Cite this article
Okhotnikova, E.S., Ganeeva, Y.M., Yusupova, T.N. et al. High-molecular-mass asphaltene fraction and its effect on the structure and stability of oxidized bitumens. Pet. Chem. 51, 187–191 (2011). https://doi.org/10.1134/S096554411103011X
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S096554411103011X