METHOD OF CONTROL OF DISPERSABILITY OF CARBON-METALLIC CATALYSTS (VERSIONS) Russian patent published in 2009 - IPC B82B3/00 B01J23/42 B01J23/44 B01J23/50 B01J37/24 

FIELD: nanotechnologies.

SUBSTANCE: invention refers to field of making of metallic catalysts, applied on porous carbon, with controllable dispersability of active components particles effective upon structure-sensitive reactions execution. Method of control of catalyst dispersability, including nanoparticles of platinum or palladium or nickel or argentums in quantity of 0.15-10 wt % applied to porous carbon, is described, at that dispersability of active component is controlled within range of 0.05 to 0.9 by treatment of its predecessors in atmosphere H₂ at temperature of 250-350°C in presence of sal ammoniac, at that sal ammoniac NH₄CI is added at one of stages of catalyst synthesis - after absorption of metal-complex predecessors of metal to carbonic carrying agent. Also method of control of catalyst dispersability, including nanoparticles of platinum or palladium or nickel or argentums in quantity of 0.15-10 wt % applied to porous carbon, is described, at that dispersability of active component is controlled within range of 0.05 to 0.9 by treatment of its predecessors in atmosphere H₂ at temperature of 250-350°C in presence of sal ammoniac, at that sal ammoniac NH₄CI is generated due to catalytical destruction of surface nitrogen compounds of carbonic carrying agent upon their contact with metal in presence of chlorine and hydrogen ions.

EFFECT: proposal of effective method of control of dispersability of metallic catalysts, applied to porous carbon.

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