Hello everyone
I'm searching on a method to determine anode life which contains RuO2 (ruthenium oxide) as MMO. Based on NACE Standard TM0108-2012, the anode fails in a short period of time because ruthenium in the MMO coating dissolves in the acid solution. So that this is not an appropriate test method. Could you suggest an alternative method?
I want to test an MMO anode to electrolyze seawater and produce Sodium Hypochlorite (NaOCl) with a concentration1500-2000 ppm by the electrolyzer.
Dear Dr. Arash Motevalian,
maybe iridium based MMO coating could be an alternative.
Longer life MMO coated titanium anodes can be produced by thicker coating with higher content of iridium oxide. In addition, there is some confusion in the industry regarding the breaking potential of MMO titanium anodes.
For more details, please see the source:
- What You Need to Know About MMO Coated Metal Anodes
Miki Funahashi
Nace International Corrosion Conference & Expo (2013) – Paper 2107
Available at: https://www.researchgate.net/publication/289154283_What_you_need_to_know_about_MMO_coated_metal_anodes
Best regards, Pierluigi Traverso.
Hello Dear Pierluigi Traverso
Thank you for your response.
Actually I've read this article and I'm searching for another method. This article explains more about Iridium oxide and cites that ruthenium dissolve in acid. This is the main drawback.
Best regards
Arash Motevalian
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