Electrolysis: processes – compositions used therein – and methods – Electrolytic synthesis – Preparing nonmetal element
Reexamination Certificate
2004-09-10
2010-02-09
Wong, Enda (Department: 1795)
Electrolysis: processes, compositions used therein, and methods
Electrolytic synthesis
Preparing nonmetal element
Reexamination Certificate
active
07658835
ABSTRACT:
A method is described for the electrolysis of an aqueous solution of hydrogen chloride or alkali metal chloride in an electrolysis cell. The cell includes at least of an anode half-element and an anode, a cathode half-element and a gas diffusion electrode as the cathode, and a cation exchange membrane for separating the anode half-element and the cathode half-element. A gas containing oxygen is supplied to the cathode half-element and excess gas containing oxygen is discharged from the cathode half-element. Excess gas containing oxygen discharged from the cathode half-element is subjected to catalytic oxidation of hydrogen.
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Gestermann Fritz
Hansen Walter
Malchow Richard
Sengstock Gaby
Bayer MaterialScience AG
Connolly Bove & Lodge & Hutz LLP
Wong Enda
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