Product Introduction
About this item:
Ruthenium-Iridium coated titanium anodes are made from two core components: a base and a coating.
The coating is similar to varnish, although quite different in composition and application method and its purpose is to allow electrochemical reactions. It needs support which supplies it with the necessary mechanical structure that constitutes the electrode. Ruthenium-coated Titanium Anodes are generally immediately available in most volumes and can be made in sheet, mesh, perforated plate, rod, or wire forms.
Ruthenium is used to manufacture anodes employed in the electrolytic production of chlorine. These are titanium anodes, coated with ruthenium oxide or, occasionally, a platinum-iridium alloy and, more recently an iridium–ruthenium alloy.
Anodes with mixed metal oxide (MMO) coating mostly consist of the base material titanium or niobium onto which precious metal oxides of the platinum metals group with other valve metals are applied. Usually, iridium-mixed oxide coatings are used for chloride-free electrolytes, whereas ruthenium or iridium/ruthenium mixed oxide coatings are used for the production of chlorine and hypochlorite. Ruthenium Oxide coated Titanium Anodes are used in electroplating, water treatment, and other electronic applications.
Coating are two main anodic reaction families and they are:
The production of Chlorine (Cl2) from solutions containing Chlorides (Cl-) according to the electrochemical reaction:
Cl- + e- --> Cl2
The production of Oxygen (O2) from acid solutions containing mainly Nitrates and sulfates according to the electrochemical reaction:
2H2O --> O2 + 2e- + 2H+
The coating is a very thin layer, typically just a few microns, made of noble metal oxides part of the Platinum family that covers the titanium's surface where the anodic reaction occurs. We use primarily Ruthenium and Iridium, mixed, depending on the application, with other metals from the same family: Palladium, Rhodium, and Platinum.
Titanium family's oxides are part of the coating's formula as well: Titanium, Tantalum, and Niobium. They serve the purpose of making the structure more compact and adherent to the Titanium base and at the same time provide a protective function against the aggressiveness of some solutions the electrodes need to work in.
The formation of the coating takes place through the application of a solution of the above elements and a subsequent high-temperature thermal treatment to create the oxide. Each application or "coat" is a cycle during which a fraction of the coating's quantity settles. The number of cycles is subject to the final noble metal's load, which, in turn, concerns the type of application it is designed for.
Advantages of Ruthenium-Iridium Coated Titanium Anode:
High anti-erosion, High current efficiency, long service life, light, and floor can be recycled after electrodes lose activity
We can also produce materials to custom specifications by request, in addition to custom compositions for commercial and research applications and new proprietary technologies.
Applications
Caustic soda production uses a diaphragm process to produce alkali, chlorate industry, organic synthesis, sodium hypochlorite production, seawater electrolysis, electrowinning nonferrous metal, produce chlorine by electrolysis, metal plating, etc.
We produce Ruthenium Titanium Anodes in high-purity forms and follow applicable ASTM testing standards; a range of grades are available including ACS, Reagent and Technical Grade, Food, Agricultural, and Pharmaceutical Grades.
Contact us and we can discuss your specific application with you. We will gladly assist you.
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