Title:
Naイオン伝導セラミックス膜を使用した過塩素酸ナトリウム製造の電解プロセス
Document Type and Number:
Japanese Patent JP2009520884
Kind Code:
A
Abstract:
An electrochemical process for the production of sodium hypochlorite is disclosed. The process may potentially be used to produce sodium hypochlorite from seawater or low purity un-softened or NaCl-based salt solutions. The process utilizes a sodium ion conductive ceramic membrane, such as membranes based on NASICON-type materials, in an electrolytic cell. In the process, water is reduced at a cathode to form hydroxyl ions and hydrogen gas. Chloride ions from a sodium chloride solution are oxidized in the anolyte compartment to produce chlorine gas which reacts with water to produce hypochlorous and hydrochloric acid. Sodium ions are transported from the anolyte compartment to the catholyte compartment across the sodium ion conductive ceramic membrane. Sodium hydroxide is transported from the catholyte compartment to the anolyte compartment to produce sodium hypochlorite within the anolyte compartment.
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Inventors:
Baragopal Shekar
Malhotra Vinod
Pendleton Justin
Raid Cathy Joe
Malhotra Vinod
Pendleton Justin
Raid Cathy Joe
Application Number:
JP2008547536A
Publication Date:
May 28, 2009
Filing Date:
December 20, 2006
Export Citation:
Assignee:
Ceramica Inc.
International Classes:
C25B1/26; C25B13/04
Domestic Patent References:
| JPH10140384A | 1998-05-26 | |||
| JPH06158373A | 1994-06-07 | |||
| JPH10121280A | 1998-05-12 | |||
| JPH0673586A | 1994-03-15 |
Foreign References:
| WO2005059205A2 | 2005-06-30 |
Attorney, Agent or Firm:
Kazuhiko Okada