Nickel-cobalt sulfide catalysts synthesized in situ from bimetallic precursors dissolved in acetone for the heavy oil upgrading
| Parent link: | Journal of Analytical and Applied Pyrolysis.— .— Amsterdam: Elsevier Science Publishing Company Inc. Vol. 193.— 2026.— Article number 107454, 9 p. |
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| Other Authors: | , , , |
| Summary: | Title screen Processing of heavy oils to obtain liquid products enriched with light fractions due to destruction of resins and asphaltenes is an important aspect of the oil refining industry. In this work, catalytic cracking of heavy oil in the presence of bicomponent catalyst precursors dissolved in acetone was investigated. It was found that the use of a precursor solution in acetone increases the yield of light fractions by 36.1 wt%, reduces viscosity from 743 to 138 mm2/s, reduces the yield of gas and coke (by-products) by 1.6 times, and also sulfur by 44 % rel. The use of deuterated acetone showed that acetone fragments are integrated into the composition of liquid product components. An increase in the yield of n-alkanes is observed in the hydrocarbon composition, with an increase in n-alkanes with a length of C10, C17 and C20 being especially pronounced. Chromatographic studies confirmed that the growth of gasoline fractions is due to the formation of saturated hydrocarbons. Kinetic calculations of the process demonstrated that the use of catalyst precursor solutions helps slow down the processes of gas and coke formation, and the destruction of asphaltenes with the formation of components of lower molecular weight. X-ray phase analysis (XPA), scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS) methods showed that the interaction of metal oxides with sulfur-containing components of heavy oil leads to the formation of sulfides Ni9S8, Co9S8 and NiCo8S8 Текстовый файл AM_Agreement |
| Language: | English |
| Published: |
2026
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| Subjects: | |
| Online Access: | https://doi.org/10.1016/j.jaap.2025.107454 |
| Format: | Electronic Book Chapter |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=684612 |
| Summary: | Title screen Processing of heavy oils to obtain liquid products enriched with light fractions due to destruction of resins and asphaltenes is an important aspect of the oil refining industry. In this work, catalytic cracking of heavy oil in the presence of bicomponent catalyst precursors dissolved in acetone was investigated. It was found that the use of a precursor solution in acetone increases the yield of light fractions by 36.1 wt%, reduces viscosity from 743 to 138 mm2/s, reduces the yield of gas and coke (by-products) by 1.6 times, and also sulfur by 44 % rel. The use of deuterated acetone showed that acetone fragments are integrated into the composition of liquid product components. An increase in the yield of n-alkanes is observed in the hydrocarbon composition, with an increase in n-alkanes with a length of C10, C17 and C20 being especially pronounced. Chromatographic studies confirmed that the growth of gasoline fractions is due to the formation of saturated hydrocarbons. Kinetic calculations of the process demonstrated that the use of catalyst precursor solutions helps slow down the processes of gas and coke formation, and the destruction of asphaltenes with the formation of components of lower molecular weight. X-ray phase analysis (XPA), scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS) methods showed that the interaction of metal oxides with sulfur-containing components of heavy oil leads to the formation of sulfides Ni9S8, Co9S8 and NiCo8S8 Текстовый файл AM_Agreement |
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| DOI: | 10.1016/j.jaap.2025.107454 |