AMMONIA SYNTHESIS CATALYST, METHOD OF PREPARATION THEREOF, AND A AMMONIA PRODUCTION PROCESS UTILIZING IT Russian patent published in 2006 - IPC C01C1/04 B01J23/46 B01J21/18 B01J35/10 B01J23/58 B01J37/02 

FIELD: inorganic synthesis catalysts.

SUBSTANCE: ammonia synthesis catalyst is based on ruthenium on carrier of inoxidizable pure polycrystalline graphite having specific BET surface above 10 m²/g, said graphite being characterized by diffraction pattern comprising only diffraction lines typical of crystalline graphite in absence of corresponding bands of amorphous carbon and which graphite being activated with at least one element selected from barium, cesium, and potassium and formed as pellets with minimal dimensions 2x2 mm (diameter x height). Catalyst is prepared by impregnating above-defined catalyst with aqueous potassium ruthenate solution, removing water, drying, reduction to ruthenium metal in hydrogen flow, cooling in nitrogen flow, water flushing-mediated removal of potassium, impregnation with aqueous solution of BaNO₃ and/or CsOH, and/or KOH followed by removal of water and pelletizing of catalyst.

EFFECT: increased activity of catalyst even when charging ruthenium in amount considerably below known amounts and increased resistance of catalyst to methane formation.

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