NaOH production from ceramic electrolytic cell

Chemistry: electrical and wave energy – Processes and products

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204103, 204129, 204252, C25B 116, C25B 900

Patent

active

052904059

ABSTRACT:
A electrolytic cell for efficiently producing caustic from sodium salts via use of a thin membrane of ceramic or ceramic composite electrolyte is disclosed. Ceramic electrolytes having a very mobile sodium ion such as NASICON are very effective in cells producing concentrated caustic from sodium salts of strong acids.

REFERENCES:
patent: 4119503 (1978-10-01), Spaziante et al.
patent: 4990413 (1991-02-01), Lee et al.
Kudo et al., Solid State Ionics, pp. 107-108, Nasicon and Related Oxoacid Salts, no date given.
Aquatech Bipolar Membrane System (advertising materials), 1985.
Basta, Nicholas. "Use Electrodialytic Membranes For Waste Recovery", Chemical Engineering, Mar. 3, 1986.
"Bipolar membrane systems available for pilot leasing", Chemical Processing, Sep. 1986, p. 119.
Chowhury, Jayadev. "New chlor-alkali methods", Chemical Engineering, Apr. 30, 1984, pp. 22-27.
"Production of Acid and Caustic From Salt (Ion Substituion)", [press release], Ionics Incorporated, no date available.
Wett, Ted. "The Edge in Electrolyzers", Chemical Business, Jul. 1989, pp. 41-44.
Winnick, Jack. "Electrochemical Membrane Gase Separation", Chemical Engineering Progress, Jan. 1990, pp. 41-46.

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