In this paper, ruthenium-containing solution was obtained by using ruthenium acetate waste residue as raw material by alkali melting and water immersion in flux. Then the ruthenium solution was oxidized to RuO4 by oxidation distillation with sulfuric acid as medium. An appropriate amount of sodium hydroxide and tetrapropyl ammonium hydroxide were dissolved in an appropriate amount of water at low temperature, and then RuO4 gas was added to obtain green solid tetra-n-propylammonium perruthenate(VII), the yield of which was more than 99.76% based on ruthenium. The preparation method realizes the recycling of waste liquid, can greatly reduce the cost, easy to operate, high yield, and easy to achieve industrial mass production. |