Chemistry of inorganic compounds – Sulfur or compound thereof – Elemental sulfur
Reexamination Certificate
2011-07-26
2011-07-26
Ward, Jessica L (Department: 1735)
Chemistry of inorganic compounds
Sulfur or compound thereof
Elemental sulfur
C423S576200, C423S648100, C205S464000, C205S554000, C205S617000, C205S637000
Reexamination Certificate
active
07985397
ABSTRACT:
A method of treating hydrogen sulfide or producing hydrogen which comprises disposing a liquid tank having a photocatalyst electrode comprising a photocatalyst and a liquid tank having a metal electrode so that the two liquid tanks are separated from each other by a cation-exchange membrane, placing a liquid containing either hydrogen sulfide or an organic substance in the liquid tank having the photocatalyst electrode, electrically connecting the photocatalyst electrode to the metal electrode, and exposing the photocatalyst to a light. The liquid to be placed in the liquid tank having the metal electrode preferably is an acidic solution. The photocatalyst preferably comprises a metal sulfide, and preferably is fine particles having a layered nanocapsule structure.
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JP 2004-25032, Machine Translation from JPO website.
Naman, S.A. et al. “Photocatalytic Production of Hydrogen from Hydrogen Sulfide in Ethanolamine aqueous solution containing semiconductors dispersion.” Int. J. Hydrogen Energy, vol. 20, No. 4 pp. 303-307, 1995.
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Kishimoto Akira
Matsumoto Hiromichi
Tohji Kazuyuki
Nittetsu Mining Co., Ltd.
Sughrue & Mion, PLLC
Tohoku University
Ward Jessica L
Wartalowicz Paul A
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