Method for recovering noble metal from inactivated noble metal catalyst
The invention relates to a method for recovering noble metal from an inactivated noble metal catalyst. The method comprises the following steps that the inactivated noble metal catalyst is dissolved in a non-polar solvent to obtain a first solution; an oxidizing agent is added into the first solutio...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The invention relates to a method for recovering noble metal from an inactivated noble metal catalyst. The method comprises the following steps that the inactivated noble metal catalyst is dissolved in a non-polar solvent to obtain a first solution; an oxidizing agent is added into the first solution to adjust the first solution into an alkaline solution, and a second solution is obtained after full reaction is conducted ; and an aqueous solution of a reducing agent is added into the second solution, after full reaction is conducted, the solution is separated, an aqueous phase is retained, andthe aqueous phase is subjected to evaporative crystallization to obtain the noble metal. The method for recovering the noble metal from the inactivated noble metal catalyst is simple in process, incineration treatment is not needed, sublimation of organic complexes of the noble metal due to incineration in a traditional recovery method is avoided, and therefore the recovery rate of the noble metal can be increased.
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