2018, №4

сс. 36-40

Problem of Loss of Active Metal in the Process of SC-CO2 Extractional Regeneration of the Hydro-Cleaning Catalyst

2018, №4

сс. 36-40

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T.R. Bilalov, F.M. Gumerov

Key words: Co-Ni-Mo catalyst, hydrotreating, hydrogenation, extraction regeneration, supercritical carbon dioxide

In the course of studying the peculiarities of regeneration of the hydrodesulfurization
catalyst DN-3531 in the supercritical CO2 media it was shown that nickel oxide does
not dissolve in it. However, in the case of application of a mixture of CO2+DMSO (5%
mass) in the specified conditions, dissolution of nickel oxide in supercritical fluid
solvents appears as possible due to the formation of Ni[DMSO]xOHy complex, which
is soluble in supercritical fluid solvent mixture.

doi:10.1134/S1990793119070029