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

• Published in: Chemistry and technology of fuels and oils Vol. 53; no. 6; pp. 905 - 912
• Main Authors: Feoktistov, D. A., Kayukova, G. P., Vakhin, A. V., Sitnov, S. A.
• Format: Journal Article
• Language: English
• Published: New York Springer US 01-01-2018; Springer; Springer Nature B.V
• Subjects: Analysis; ASPHALTENES; Catalysis; CATALYSTS; Chemical bonds; Chemistry; Chemistry and Materials Science; COBALT; Coordination compounds; COPPER; Copper (Metal); Copper converters; Data analysis; Electron microscopy; Geotechnical Engineering & Applied Earth Sciences; Hydrogen; Industrial Chemistry/Chemical Engineering; INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; IRON; Mineral Resources; MOLECULAR WEIGHT; PARTICLE SIZE; Powders (Particulate matter); RESINS; SCANNING ELECTRON MICROSCOPY; Sulfides; SULFUR; Viscosity; X-RAY DIFFRACTION; scanning electron microscopy; catalyst precursor; aquathermolysis; catalyst; X-ray diffraction analysis; high-viscosity oil
• ISSN: 0009-3092; 1573-8310
• DOI: 10.1007/s10553-018-0880-4

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.