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Structural Transformations of Heavy Oil Asphaltenes from the Zyuzeevskoye Field upon Thermocatalytic Cracking

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Abstract

Structural changes of asphaltenes in the course of thermal and catalytic cracking of heavy oil from the Zyuzeevskoye field in the Republic of Tatarstan were studied. Cracking was carried out in a closed-type reactor at 450°С for 80 min. Data on the material balance and material composition of liquid cracking products were obtained. The structural group analysis of asphaltenes from the initial oil and asphaltenes formed after thermal and catalytic cracking was performed. It was shown that the asphaltene molecules of the initial oil have an archipelago type structure. In the course of catalytic cracking, the structure of an average asphaltene molecule transformed into an island type structure. These changes were due to the acceleration of cracking reactions of the feedstock, namely, aromatization and dealkylation, and the breaking of carbon–heteroatom bonds.

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Funding

This study was funded by the Ministry of Science and Higher Education of the Russian Federation and carried out within the framework of a state contract at the Institute of Petroleum Chemistry, Siberian Branch, Russian Academy of Sciences.

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Authors and Affiliations

  1. Institute of Petroleum Chemistry, Siberian Branch, Russian Academy of Sciences, 634055, Tomsk, Russia

    Kh. Kh. Urazov & N. N. Sviridenko

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  1. Kh. Kh. Urazov
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  2. N. N. Sviridenko
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Corresponding authors

Correspondence to Kh. Kh. Urazov or N. N. Sviridenko.

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The authors declare that they have no conflicts of interest.

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Translated by V. Makhlyarchuk

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Urazov, K.K., Sviridenko, N.N. Structural Transformations of Heavy Oil Asphaltenes from the Zyuzeevskoye Field upon Thermocatalytic Cracking. Solid Fuel Chem. 56, 128–132 (2022). https://doi.org/10.3103/S0361521922020100

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  • DOI: https://doi.org/10.3103/S0361521922020100

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