A method for synthesizing a ruthenium-based catalyst using ruthenium nitrosyl nitrate

Abstract

This invention discloses a method for synthesizing ruthenium-based catalysts using nitrosyl ruthenium nitrate, belonging to the field of ruthenium-based catalyst technology. The method involves dissolving and diluting nitrosyl ruthenium nitrate, mixing it with cobalt-based carbon nanomaterials, and then vacuum impregnating it with ruthenium ions to obtain ruthenium / cobalt-based carbon nanomaterial composite powder. The ruthenium / cobalt-based carbon nanomaterial composite powder and a porous aromatic framework material are then uniformly mixed using a liquid-phase dispersion method to obtain a catalyst precursor. This precursor is then carbonized under argon protection, and ruthenium and cobalt are reduced to elemental form in a reducing mixed gas to obtain the ruthenium-based catalyst. This completes the method for synthesizing ruthenium-based catalysts using nitrosyl ruthenium nitrate. The carbonized porous aromatic framework material forms a rigid carbon framework with an ordered porous structure, which helps prevent the aggregation of catalytically active sites and improves the mass transfer efficiency of reactants, thereby increasing the ammonia synthesis rate.

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