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专利名称：Catalytic alloys
发明人：John M. Sedlak,Richard J. Lawrance申请号：US06/134853申请日：19800327公开号：US04294608A公开日：19811013
摘要：A method of making substantially oxide-free metal alloys is described. Thealloys are made by a hot alkaline reduction of compounds of at least two metals, such asthe halides of the metals dissolved in an aqueous medium containing a reducing agent.The dissolved metal compounds containing a first reducing agent are added to a secondreducing agent, in a alkaline medium, and the substantially oxide-free, finely-divided alloyprecipitates from solution. The alloy has a unique X-ray diffraction pattern indicating thatit is a true alloy with no metal oxides present. In a preferred embodiment, ruthenium andplatinum chlorides are dissolved in water containing a dissolved reducing agent. Thissolution is added to a second reducing agent in an alkaline medium at elevatedtemperatures, and a finely-divided black precipitate of a true alloy of ruthenium andplatinum forms. The X-ray diffraction pattern shows a distorted ruthenium structurehaving platinum in solid solution. Oxygen evolution catalysis was substantially improved inan electrochemical cell having a catalytic cathode made of this alloy of platinum andruthenium.
申请人：GENERAL ELECTRIC COMPANY
代理人：I. David Blumenfeld
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