A study of structural transformations of asphaltene molecules during hydroconversion of vacuum residue at various temperatures in the presence of nanosized molybdenum disulfide particles

• Published in: Petroleum chemistry Vol. 53; no. 5; pp. 309 - 315
• Main Authors: Zaytseva, O. V., Magomadov, E. E., Kadiev, Kh. M., Chernysheva, E. A., Kapustin, V. M., Khadzhiev, S. N.
• Format: Journal Article
• Language: English
• Published: Boston Springer US 01-09-2013; Springer
• Subjects: Chemistry; Chemistry and Materials Science; Industrial Chemistry/Chemical Engineering; Molybdenum; Molybdenum compounds; Nuclear magnetic resonance spectroscopy; H NMR spectroscopy; hydroconversion; structural group analysis; hydroconversion product; average molecular mass; vacuum residue; elemental analysis; asphaltenes; catalyst nanoparticles
• ISSN: 0965-5441; 1555-6239
• DOI: 10.1134/S0965544113050113

Elemental analysis, molecular mass, and
1
H NMR data are presented for vacuum residue asphaltenes and the products of vacuum residue hydroconversion in the presence of nanosized MoS
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catalyst particles obtained “in situ” in the hydrocarbon medium. Structural group analysis of average asphaltene molecules has been performed and their structural units have been described. The main trends of change in the structural parameters of the molecules under the hydroconversion conditions and the effect of temperature on the character of these changes have been revealed.