Ruthenium-zinc catalysts, composed of the precious metals ruthenium and zinc, not only have high catalytic efficiency and good reaction selectivity but also play a crucial role in driving chemical reactions. After their use, these catalysts still possess very high recycling value. When it comes to the recycling of ruthenium-zinc catalysts, it’s essential to discuss the recycling process with Hirase Precious Metals.


Precious Metal Recycling
Before recycling these ruthenium-zinc catalysts, a simple pretreatment is required, mainly to remove the organic substances attached to the surface, facilitating subsequent operations.

After the pretreatment step, the leaching step follows. We can use either hydrochloric acid or sulfuric acid solutions to dissolve the metal components in the catalyst. After leaching, the solution contains ruthenium, zinc, and other possible metal impurities. Since our goal is to recover ruthenium, purification is necessary.

In the purification process, we can use methods such as precipitation, ion exchange, and solvent extraction to separate ruthenium from the solution. Finally, it can be precipitated out of the solution through chemical reduction or electrodeposition.

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