Patent
Production of noble metal fine particles using emulsion type liquid film method
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The extract agent for metal ion (methyl isobutyl ketone, etc), organic phase containing the water insoluble organic solvent (kerosine, etc) and the water phase containing reducing agent (sulfurous acid, etc).Abstract:
PURPOSE:To produce noble metal particles in water drips in oil by adding water drips in oil type emulsion composing of metal ion extract agent, organic phase containing water insoluble organic solvent and water phase containing reducing agent into noble metal salt water solution CONSTITUTION:The extract agent for metal ion (methyl isobutyl ketone, etc), organic phase containing the water insoluble organic solvent (kerosine, etc) and the water phase containing the reducing agent (sulfurous acid, etc) are mixed under existence of surfactant (sorbitan monooleate, etc) to produce the water drip in oil type emulsion This water drip in oil type emulsion is added into the noble metal salt aq solution to develop the noble metal particles (Au, Pt, Pd, Rh, Ir, etc) in the water drip in the oil By this method, the noble metal is concnd and recovered and the fine particles are producedread more
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