Chemistry of hydrocarbon compounds – Product blend – e.g. – composition – etc. – or blending process... – For fuel use only
Reexamination Certificate
2007-07-10
2007-07-10
Johnson, Edward M. (Department: 1754)
Chemistry of hydrocarbon compounds
Product blend, e.g., composition, etc., or blending process...
For fuel use only
C208S20800M
Reexamination Certificate
active
10660138
ABSTRACT:
Attrition resistant, sorbent compositions for the removal of elemental sulfur and sulfur compounds, such as hydrogen sulfide and organic sulfides, from cracked-gasoline and diesel fuels are prepared by the impregnation of a sorbent support comprising zinc oxide, expanded perlite, and alumina with a promoter such as nickel, nickel oxide or a precursor of nickel oxide followed by reduction of the valence of the promoter metal in the resulting promoter metal sorbent support composition. Also disclosed is a composition comprising desulfurized, cracked-gasoline wherein the desulfurized cracked-gasoline comprises less than about 1 ppmw thiol compounds and less than about 1 ppmw tetrahydrothiophene compounds.
REFERENCES:
patent: RE27857 (1974-01-01), Helfrey et al.
patent: 4831208 (1989-05-01), Zarchy
patent: 5167797 (1992-12-01), Ou
patent: 5858212 (1999-01-01), Darcy
Bares Joseph E.
Dodwell Glen W.
Gislason Jason J.
Johnson Marvin J.
Malandra James L.
ConocoPhillips Company
Johnson Edward M.
Welvaert Bronwyn A.
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