Ruthenium Oxide Recycling

Ruthenium oxide (RuO₂) is an oxide of ruthenium, usually a black or dark brown powder, with excellent catalytic properties and stability. It is a compound formed by the oxidation of ruthenium in oxygen or air, and is commonly used in the fields of electrocatalysis, chemical reaction catalysis, and energy conversion. Ruthenium oxide is utilized as a highly efficient catalyst in reactions such as fuel cells, water electrolysis, and hydrogen production, and exhibits excellent catalytic activity and corrosion resistance, especially in the oxygen reduction reaction. It is also widely used in the field of electrochemistry, especially as an anode material for chlorine-alkali electrolysis and hydrogen oxidation reactions. Ruthenium oxide has become an important material for the production of efficient electrocatalysts and other electrochemical devices due to its high electrical conductivity and chemical stability.

The production methods of ruthenium oxide (RuO₂) usually include the following general processes:

1. Direct oxidation method: The direct oxidation method is a method in which ruthenium metal is reacted with oxygen at high temperatures to produce ruthenium oxide. This is usually done at high temperatures, about 500-600°C, where ruthenium metal reacts with oxygen to form ruthenium oxide (RuO₂). The reaction conditions must be strictly controlled to ensure the completeness of the reaction and the purity of the product. This method is relatively simple, but has high requirements for reaction temperature and oxygen concentration.

2. Ruthenium chloride reduction method: In this process, ruthenium is first dissolved in aqua regia (a mixture of concentrated hydrochloric acid and concentrated nitric acid) to produce ruthenium chloride (RuCl₃). The ruthenium chloride is then reacted with oxygen in water or other solvents to form ruthenium oxide. The advantage of this method is that the particle size and morphology of ruthenium oxide can be precisely controlled by controlling the reaction conditions, making it suitable for laboratory-scale synthesis.

3. Thermal decomposition method: This method involves decomposing ruthenium salts (such as ruthenium chloride and ruthenium nitrate) at high temperatures to produce ruthenium oxide. For example, ruthenium chloride (RuCl₃) can be thermally decomposed at a certain temperature to produce ruthenium oxide. This process should usually be carried out in an inert gas atmosphere to avoid the formation of other by-products.

4. Sol-gel method: The sol-gel method is a commonly used method for preparing nanomaterials. A ruthenium precursor (such as ruthenium acetate or ruthenium chloride) is dissolved in a solvent to prepare a sol, and then ruthenium oxide nanoparticles are obtained by a gelation process. This method is often used to manufacture high-performance catalysts and electrocatalytic materials because it can precisely control the structure and particle size of ruthenium oxide.

5. Chemical vapor deposition (CVD): Chemical vapor deposition involves vaporizing a ruthenium precursor at high temperature and reacting it with oxygen or other oxidizing gases to deposit a ruthenium oxide film on the surface of a substrate. This method is often used to manufacture ruthenium oxide thin films and is widely used in fields such as electrocatalytic devices and supercapacitors.

Waste ruthenium oxide is one of the recycling sources for ruthenium-containing precious metal catalyst waste. Recycling of ruthenium-containing precious metal catalyst waste also includes ruthenium chloride recycling, ruthenium acetate recycling, ruthenium carbon recycling, ruthenium zinc catalyst recycling, ruthenium iodide recycling, ruthenium aluminum oxide catalyst recycling, etc. If you need to recycle ruthenium-containing scrap, please call our 24-hour service hotline. Dingfeng precious metal recycling and refining manufacturers have their own recycling and refining plants without going through middlemen that create price differences, and our first-class technical team and customer service personnel provide one-to-one service and ensure customer privacy during the recycling process.