Hydrogenation of coal liquid utilizing a metal carbonyl catalyst

Details Hydrogenation of coal liquid utilizing a metal carbonyl catalyst Hydrogenation of coal liquid utilizing a metal carbonyl catalyst

1978-05-02

1979-05-01

Crasanakis, George

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Hydrogenation

C10G 2302

Patent

active

041522486

ABSTRACT:
Coal liquid having a dissolved transition metal, catalyst as a carbonyl complex such as Co.sub.2 (CO.sub.8) is hydrogenated with hydrogen gas or a hydrogen donor. A dissociating solvent contacts the coal liquid during hydrogenation to form an immiscible liquid mixture at a high carbon monoxide pressure. The dissociating solvent, e.g. ethylene glycol, is of moderate coordinating ability, while sufficiently polar to solvate the transition metal as a complex cation along with a transition metal, carbonyl anion in solution at a decreased carbon monoxide pressure. The carbon monoxide pressure is reduced and the liquids are separated to recover the hydrogenated coal liquid as product. The dissociating solvent with the catalyst in ionized form is recycled to the hydrogenation step at the elevated carbon monoxide pressure for reforming the catalyst complex within fresh coal liquid.

REFERENCES:
patent: 2756194 (1956-07-01), Mayland
patent: 2841617 (1958-07-01), Mertzweiller
patent: 3184401 (1965-05-01), Gorin
patent: 3505204 (1970-04-01), Hoffman
patent: 3694342 (1972-09-01), Sprow et al.
"Fossil Energy Research Program" ERDA Report No. 77-33, Apr. 1977.

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