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Sustainion® X37-50 Grade T is an alkaline anion exchange membrane with PTFE support for easier handling and increased durability. It is designed for use with a supporting electrolyte and is optimized for anion exchange water electrolyzers.
This anion exchange membrane is supplied in a dry-chloride form supported on a PET liner. It consequently must be converted to the hydroxide form by exposing the membrane to a strong base. It is recommended to soak the membrane in a large bath of 1M KOH for 24 – 48 hours in order to convert the chloride form into the hydroxide form. This activation also helps in strengthening the membrane via cross-linking with KOH. Please note that during this process, the membrane will swell and separate from the PET liner. The PET liner can then be discarded after separation.
This membrane is located between a thin porous PTFE layer coated with sustainion 37 on both sides. The PTFE decreases the transport of water in the membrane so they are less efficient in CO2 electrolyzers.
Please note that this membrane is currently only available in 20 cm x 28 cm sheets.
Anion conductivity of Sustainion X37 membrane for hydroxide ions, carbonate ions, and chloride ions are provided in the graph below.
Typical 5 - 10 business day lead time is to be expected.
***Buyer represents and warrants that all uses of Product will be for Buyer's own use, which means, in particular, that Buyer will not sell, distribute, or transfer Product, whether directly or indirectly, to any class of trade (each a Product Diversion ). Any Product Diversion shall be considered a material breach of this Purchase Contract. The Products contain chemical substances not on the Toxic Substances Control Act (TSCA ) inventory. Samples may be hazardous. Buyer represents and warrants that it will only use the samples for research and development purposes under the supervision of a technically qualified individual.
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