Euro Chlor - How is chlor-alkali made using diaphragm technology?

Chlorine, caustic soda/ potash and hydrogen are made from salt, water and electricity using two important technologies one of which is based on a diaphragm... Discover more at www.eurochlor.org

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what is this used for?

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The technology is used to make chlor-alkali products - you can read more about this on our website www.eurochlor.org.

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What does the permeable diaphragm made of?

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Asbestos usually

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Non-asbestos diaphragms are composed of:
(1) fibres with a PTFE polymer backbone with zirconia (ZrO2) particles embedded in and on the PTFE, and
(2) free zirconia particles.
Source BREF/BAT Chlor-Alkali - www.eurochlor.org/wp-content/uploads/2019/04/CAK_BREF_102014.pdf