Problem of Loss of Active Metal in the Process of SC–CO2 Extractional Regeneration of the Hydrocleaning Catalyst

Problem of Loss of Active Metal in the Process of SC–CO2 Extractional Regeneration of the Hydrocleaning Catalyst

— While studying the features of the regeneration of the hydrodesulfurization catalyst DN-3531 in supercritical CO 2 media, it was shown that nickel oxide does not dissolve in it. However, for the application of a mixture of CO 2 + DMSO (5 wt %) under specified conditions, the dissolution of nickel...

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Veröffentlicht in:Russian journal of physical chemistry. B 2019-12, Vol.13 (7), p.1160-1163
Hauptverfasser: Bilalov, T. R., Gumerov, F. M.
Format: Artikel
Sprache:eng
Schlagworte:
Carbon dioxide
Catalysts
Chemistry
Chemistry and Materials Science
Feature extraction
Hydrodesulfurization
Nickel oxides
Physical Chemistry
Regeneration
Solvents
Supercritical fluids
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Zusammenfassung:— While studying the features of the regeneration of the hydrodesulfurization catalyst DN-3531 in supercritical CO 2 media, it was shown that nickel oxide does not dissolve in it. However, for the application of a mixture of CO 2 + DMSO (5 wt %) under specified conditions, the dissolution of nickel oxide in supercritical fluid solvents occurs, apparently due to the formation of Ni[DMSO] x OH y complex, which is soluble in the supercritical fluid solvent mixture.
ISSN:1990-7931
1990-7923
DOI:10.1134/S1990793119070029