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Nitration of Petroleum Asphaltenes with Concentrated Nitric Acid under Various Conditions

  • INNOVATIVE TECHNOLOGIES OF OIL AND GAS
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Chemistry and Technology of Fuels and Oils Aims and scope

A Correction to this article was published on 15 November 2021

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The relationships of the reaction of the of tar asphaltenes with concentrated nitric acid were studied under various quantitative, temperature, and time conditions. According to IR spectroscopic data, nitration occurs to the highest degree during the action of a 50-fold excess of 64% nitric acid on the asphaltenes at 60°C for 4 hours. Nitration is accompanied by oxidation side reactions leading to the formation of nitrate, phenolic, carbonyl, and sulfoxide groups. It was established by mass spectrometry that there is a tendency for the number-average and weight-average molecular weights of the nitration products to decrease in comparison with the initial asphaltenes. It was found by electron paramagnetic resonance that the content of stable free radicals and vanadyl complexes in the products of the nitration reaction decreases.

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Authors and Affiliations

  1. Federal Research Center, Kazan Scientific Center, Russian Academy of Sciences, Kazan, Russia

    O. A. Nagornova, L. E. Foss, K. B. Shabalin, L. I. Musin & D. N. Borisov

  2. A. E. Arbuzov Institute of Organic and Physical Chemistry, Federal Research Center “Kazan Scientific Center of the Russian Academy of Sciences, Kazan, Russia

    M. R. Yakubov

Authors
  1. O. A. Nagornova
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  2. L. E. Foss
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  3. K. B. Shabalin
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  4. L. I. Musin
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  5. D. N. Borisov
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  6. M. R. Yakubov
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Corresponding author

Correspondence to O. A. Nagornova.

Additional information

Translated from Khimiya i Tekhnologiya Topliv i Masel, No. 4, pp. 65–71, July–August, 2021.

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Nagornova, O.A., Foss, L.E., Shabalin, K.B. et al. Nitration of Petroleum Asphaltenes with Concentrated Nitric Acid under Various Conditions. Chem Technol Fuels Oils 57, 645–652 (2021). https://doi.org/10.1007/s10553-021-01289-w

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  • DOI: https://doi.org/10.1007/s10553-021-01289-w

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