Compositions – Preservative agents – Anti-oxidants or chemical change inhibitants
Patent
1980-12-11
1982-02-02
Niebling, John F.
Compositions
Preservative agents
Anti-oxidants or chemical change inhibitants
252447, B01J 2118
Patent
active
043138535
ABSTRACT:
A process for forming a dispersion of metal selected from the group consisting essentially of Ni, Co, Mo and mixtures thereof on graphite comprising heating a composite of said metal on graphite at a temperature between about 800.degree.-975.degree. C. in an inert, hydrogen-containing atmosphere to form metal-containing channels in the graphite, raising the temperature to at least about 975.degree. C. so that the metal in the channels spreads out and chemically wets the surface of the channels as a film of metal phase, followed by contacting the so-formed metal-wetted, channeled composite with an oxidizing atmosphere to break up the film of metal phase into discrete metal particles. The average diameter of the particles is generally below about 25 A and the preferred metal is nickel.
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patent: 4028274 (1977-06-01), Kunz
patent: 4055628 (1977-10-01), McCarroll et al.
patent: 4136059 (1979-01-01), Jalan et al.
patent: 4140720 (1979-02-01), Drake
patent: 4160745 (1979-07-01), Murrell
patent: 4163775 (1979-08-01), Foster et al.
Baker Rees T. K.
Derouane Eric G.
Pieters Wim J. M.
Sherwood Rexford D.
Corcoran Edward M.
Exxon Research & Engineering Co.
Niebling John F.
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