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Catalytic Aquathermolysis of High-Viscosity Oil Using Iron, Cobalt, and Copper Tallates

The results of a study of the composition of active forms of the catalyst formed upon degradation of the precursor, based on the results of physical modeling of a sample of high-viscosity oil having high asphaltene and resin contents, are presented. Oil-soluble iron, cobalt, and copper tallates were used as the objects of the study. The composition of the separated powder of the active form of the catalyst was determined by X-ray diffraction analysis, and the catalyst particle size was determined by scanning electron microscopy. The SARA (saturate, aromatic, resin and asphaltene) analysis data revealed a marked decrease in high-molecular-weight oil components due to thermocatalytic cracking. The basic transformation mechanism is breakdown of the high-molecular-weight compounds along the sulfur-bearing bonds, as indicated by elemental CHNS (carbon, hydrogen, nitrogen and sulfur) analysis data. It is shown that the cobalt- and copper-based oil-soluble complexes turn are converted to sulfide forms and the iron-based complex is converted to the oxide form. According to the results of scanning electron microscopic analysis of the catalyst, the particle size is about 60 nm.

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The work was carried out with a subsidy provided in terms of state support for the Kazan Federal University for the purpose of raising its competitiveness among leading worldwide scientific education centers.

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Correspondence to A. V. Vakhin.

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Translated Khimiya i Tekhnologiya Topliv i Masel, No. 6, pp. 62 – 66, November – December, 2017.

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Feoktistov, D.A., Kayukova, G.P., Vakhin, A.V. et al. Catalytic Aquathermolysis of High-Viscosity Oil Using Iron, Cobalt, and Copper Tallates. Chem Technol Fuels Oils 53, 905–912 (2018).

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  • high-viscosity oil
  • catalyst
  • catalyst precursor
  • aquathermolysis
  • X-ray diffraction analysis
  • scanning electron microscopy