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Electrode Technologies

Chlorine and caustic soda production

Efficiently produce chlorine and caustic soda while cutting energy use and ensuring high-purity output for various organic and inorganic industrial processes.

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Chlorine and caustic soda production is the industrial process of splitting salt (sodium chloride) and water molecules using electricity to produce chlorine gas, sodium hydroxide (NaOH), and hydrogen.
These chemicals are essential for water treatment and the production of paper, plastics, pharmaceuticals, and many other industries, making this process a cornerstone of modern industrial production and public health.


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In chlor-alkali production, cathodes drive the reduction reaction of H+ ions from the water molecule into hydrogen gas, leaving hydroxide ions in solution to form caustic soda (NaOH). Cathode performance directly affects energy consumption, product purity, and overall cell efficiency.
De Nora’s cathodes are designed with advanced MMO and noble-metal coatings applied on robust and high-quality substrates, ensuring:

Optimized performance for maximum efficiency.

De Nora designs and manufactures high-performance cathodes and anodes for the chlor-alkali industry.
Advanced DSA® and GDE electrodes, along with catalytic coatings and asbestos-free separators, ensure minimized dissipation of energy, chlorine, hydrogen, and high-purity caustic soda, as well as optimized plant efficiency.

Durable, reliable, & globally supported.

Engineered for demanding conditions, De Nora cathodes resist wear, deformation, and reverse currents while offering long operational life.
Global facilities and expert technical support enable refurbishment, repairs, and real-time assistance wherever your plant operates.

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Via Leonardo Bistolfi, 35
20134 Milan Italy

+39 02 21291
industriedenora@denora.com

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