| 摘要 |
This invention was conceived to provide a method capable of synthesizing a precious metal catalyst the cluster size of which is controlled and which does not contain impurities. The production method of a precious metal catalyst according to the invention includes the steps of uniformly mixing a precious metal containing solution and an aqueous solution of a polymer compound capable of coordination with the precious metal to form a complex of the precious metal and said polymer compound, adding drop-wise the aqueous solution containing the complex to water containing micro-bubbles containing therein hydrogen, mixing both of the solutions to reduce the precious metal, and supporting the mixed solution on a support and then baking the support.
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