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Toyota Motor Corp
Original Assignee
Toyota Motor Corp
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Publication date
Application filed by Toyota Motor CorpfiledCriticalToyota Motor Corp
Priority to JP6566980ApriorityCriticalpatent/JPS56164022A/en
Publication of JPS56164022ApublicationCriticalpatent/JPS56164022A/en
PURPOSE: The catalyst of a metal hard soluble in inorganic acids, supported on a carrier is impregnated with another metal or its salt that forms an alloy readily soluble in inorganic acids with the catalyst metal, they are heated to form an alloy, and the alloy is extracted with an inorganic acid to recover the metal of the catalyst.
CONSTITUTION: The catalyst of a metal hard soluble in inorganic acids such as Rh or Ir supported on a carrier is impregnated with another metal that can form together with the catalyst metal an alloy that are readily soluble in inorganic acids, e.g., Pr or Pb in the form of a solution or melted salt. Then, the impregnated catalyst is heat treated to form the alloy and the alloy is extracted with an inorganic acid.
COPYRIGHT: (C)1981,JPO&Japio
JP6566980A1980-05-171980-05-17Recovery of metal from used catalyst
PendingJPS56164022A
(en)