Electrolysis: processes – compositions used therein – and methods – Electrolytic synthesis – Preparing nonmetal element
Reexamination Certificate
2011-03-22
2011-03-22
Neckel, Alexa D. (Department: 1723)
Electrolysis: processes, compositions used therein, and methods
Electrolytic synthesis
Preparing nonmetal element
C205S628000
Reexamination Certificate
active
07909980
ABSTRACT:
Process for production of hydrogen of high purity by photoelectrochemical means with low energy consumption. The process is carried out in an electrochemical cell which comprises at least one anodic chamber with an anode and at least one cathodic chamber with a cathode, in which the two chambers are separated by an ion-exchange membrane, where: i) the anodic chamber contains an aqueous anodic solution which comprises the Fe2+ion, and the aqueous solution is adjusted to a pH less than or equal to 5; ii) a sacrificial substance is added to the anodic chamber; iii) the anodic solution is irradiated with ultraviolet light and/or visible light; iv) the cathodic chamber contains an aqueous cathodic solution which has a proton concentration equal to or higher than 10−3M; and v) electric current is fed between the anodic chamber and the cathodic chamber separated by the membrane, this membrane being a proton-selective ion-exchange membrane impermeable to the iron and impermeable to the sacrificial substance.
REFERENCES:
patent: 4699700 (1987-10-01), Dhooge
patent: 5271813 (1993-12-01), Linkous
patent: 6063258 (2000-05-01), Sayama et al.
patent: 6224744 (2001-05-01), Casado Gimenez et al.
patent: 2003/0031585 (2003-02-01), Puma
patent: 2006/0144700 (2006-07-01), Carson et al.
patent: 0931855 (1999-07-01), None
Andreozzi et al., “Advanced oxidation processes (AOP) for water purfication and recovery,” Catalysis Today 53 (1999) pp. 51-59.
Takehara et al. “Hydrogen Production by Hybrid Electrolysis Combined With Assistance of Solar Energy”. STN Chemical Abstracts, XX, XX, vol. 22, No. 95, Nov. 30, 1981, XP002095242.
Yoshizawa et al. “Electrochemical Hydrogen Generator”. STN Chemical Abstracts, XX, XX, vol. 12, No. 89, Sep. 18, 1978, XP002095241.
Takehara et al. “Hydrogen Production by Hybrid Process Combined With Assistance of Solar and Electrical Energies”. Chemical Abstracts + Indexes, American Chemical Society. Columbus, US, vol. 18, No. 98, May 2, 1983, XP002095243.
Casado Gimenez Juan
Macanas De Benito Jorge
Muñoz Tapia Maria
Soler Turu Lluis
Matgas 2000, A.I.E.
Neckel Alexa D.
O'Connor Cozen
Smith Nicholas A.
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