KFU. Card publication. Carbon dioxide-assisted aqueous pyrolysis of heavy oil in the presence of oil-soluble catalysts and sodium nanoparticles

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CARBON DIOXIDE-ASSISTED AQUEOUS PYROLYSIS OF HEAVY OIL IN THE PRESENCE OF OIL-SOLUBLE CATALYSTS AND SODIUM NANOPARTICLES

Form of presentation

Articles in international journals and collections

Year of publication

2025

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Authors, employees of KFU

Mirzaev Oybek Olimzhon Ugli, author

Bibliographic description in the original language

Mirzayev O. et al. Carbon dioxide-assisted aqueous pyrolysis of heavy oil in the presence of oil-soluble catalysts and sodium nanoparticles //Journal of Analytical and Applied Pyrolysis. – 2025. – T. 189. – S. 107061.

Annotation

The CO2-assisted aqueous pyrolysis of heavy oil in the reservoir formations is one of the most promising methods to enhance heavy oil recovery and utilize carbon dioxide into value-added products. The study examines the performance of the oil-soluble catalysts and dispersed sodium nanoparticles on the upgrading degree of heavy oil and carbon dioxide hydrogenation degree. Various analytical tools such as SARA analysis, viscosity measurements, elemental analysis, gas chromatography, spectroscopy-based analysis methods (EPR, GC-MS and FT-IR analysis) were employed to evaluate the upgrading efficiency of the synthesized catalysts. The relative content of the evolved CO2 in the presence of Fe-Na nanoparticles was reduced from 78 % (blank) to 31 %, while the sum of C1-C5 n-alkanes was increased from 9.2 % to 41.6 %. The Ni-Na nanoparticles exhibited high activity on destructive hydrogenation of resins and asphaltenes such that reduced the mass ratio of heavy fragments by 35 % and increased the mass content of light fractions by 21 %. The CO2-assisted aqueous pyrolysis of heavy oil in the presence of sodium-promoted transition metal oxides and sulfides contributed to the viscosity reduction by 89 %. Taken together, we have found a cutting-edge solution for carbon dioxide utilization and obtained comprehensive experimental results for upgrading of heavy oil in-situ.

Keywords

Heavy oil, Catalysts, Alkali metals, CO2 hydrogenation, Aqueous pyrolysis, Aquathermolysis, Hybrid EOR

The name of the journal

Journal of Analytical and Applied Pyrolysis

URL

https://www.sciencedirect.com/science/article/pii/S0165237025001147

Please use this ID to quote from or refer to the card

https://repository.kpfu.ru/eng/?p_id=312470&p_lang=2

Full metadata record

Field DC	Value	Language
dc.contributor.author	Mirzaev Oybek Olimzhon Ugli	ru_RU
dc.date.accessioned	2025-01-01T00:00:00Z	ru_RU
dc.date.available	2025-01-01T00:00:00Z	ru_RU
dc.date.issued	2025	ru_RU
dc.identifier.citation	Mirzayev O. et al. Carbon dioxide-assisted aqueous pyrolysis of heavy oil in the presence of oil-soluble catalysts and sodium nanoparticles //Journal of Analytical and Applied Pyrolysis. – 2025. – �. 189. – �. 107061.	ru_RU
dc.identifier.uri	https://repository.kpfu.ru/eng/?p_id=312470&p_lang=2	ru_RU
dc.description.abstract	Journal of Analytical and Applied Pyrolysis	ru_RU
dc.description.abstract	The CO2-assisted aqueous pyrolysis of heavy oil in the reservoir formations is one of the most promising methods to enhance heavy oil recovery and utilize carbon dioxide into value-added products. The study examines the performance of the oil-soluble catalysts and dispersed sodium nanoparticles on the upgrading degree of heavy oil and carbon dioxide hydrogenation degree. Various analytical tools such as SARA analysis, viscosity measurements, elemental analysis, gas chromatography, spectroscopy-based analysis methods (EPR, GC-MS and FT-IR analysis) were employed to evaluate the upgrading efficiency of the synthesized catalysts. The relative content of the evolved CO2 in the presence of Fe-Na nanoparticles was reduced from 78 % (blank) to 31 %, while the sum of C1-C5 n-alkanes was increased from 9.2 % to 41.6 %. The Ni-Na nanoparticles exhibited high activity on destructive hydrogenation of resins and asphaltenes such that reduced the mass ratio of heavy fragments by 35 % and increased the mass content of light fractions by 21 %. The CO2-assisted aqueous pyrolysis of heavy oil in the presence of sodium-promoted transition metal oxides and sulfides contributed to the viscosity reduction by 89 %. Taken together, we have found a cutting-edge solution for carbon dioxide utilization and obtained comprehensive experimental results for upgrading of heavy oil in-situ.	ru_RU
dc.language.iso	ru	ru_RU
dc.subject	Heavy oil	ru_RU
dc.subject	Catalysts	ru_RU
dc.subject	Alkali metals	ru_RU
dc.subject	CO2 hydrogenation	ru_RU
dc.subject	Aqueous pyrolysis	ru_RU
dc.subject	Aquathermolysis	ru_RU
dc.subject	Hybrid EOR	ru_RU
dc.title	Carbon dioxide-assisted aqueous pyrolysis of heavy oil in the presence of oil-soluble catalysts and sodium nanoparticles	ru_RU
dc.type	Articles in international journals and collections	ru_RU