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1. (WO2007002614) A THERMOCHEMICAL CYCLE FOR PRODUCTION OF HYDROGEN AND/OR OXYGEN VIA WATER SPLITTING PROCESSES
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2007/002614 International Application No.: PCT/US2006/024865
Publication Date: 04.01.2007 International Filing Date: 27.06.2006
IPC:
C01B 3/04 (2006.01) ,C01B 3/02 (2006.01) ,C01B 3/06 (2006.01)
C CHEMISTRY; METALLURGY
01
INORGANIC CHEMISTRY
B
NON-METALLIC ELEMENTS; COMPOUNDS THEREOF
3
Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
02
Production of hydrogen or of gaseous mixtures containing hydrogen
04
by decomposition of inorganic compounds, e.g. ammonia
C CHEMISTRY; METALLURGY
01
INORGANIC CHEMISTRY
B
NON-METALLIC ELEMENTS; COMPOUNDS THEREOF
3
Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
02
Production of hydrogen or of gaseous mixtures containing hydrogen
C CHEMISTRY; METALLURGY
01
INORGANIC CHEMISTRY
B
NON-METALLIC ELEMENTS; COMPOUNDS THEREOF
3
Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
02
Production of hydrogen or of gaseous mixtures containing hydrogen
06
by reaction of inorganic compounds containing electro-positively bound hydrogen, e.g. water, acids, bases, ammonia, with inorganic reducing agents
Applicants:
UNIVERSITY OF CENTRAL FLORIDA; 4000 Central Florida Blvd. Orlando, FL 32816, US (AllExceptUS)
HUANG, Cunping [CN/US]; US (UsOnly)
TABATABAIE-RAISSI, Ali [US/US]; US (UsOnly)
MURADOV, Nazim [US/US]; US (UsOnly)
Inventors:
HUANG, Cunping; US
TABATABAIE-RAISSI, Ali; US
MURADOV, Nazim; US
Agent:
JETTER, Neil, R.; AKERMAN SENTERFITT P.O. Box 3188 West Palm Beach, FL 33402-3188, US
Priority Data:
60/694,27327.06.2005US
Title (EN) A THERMOCHEMICAL CYCLE FOR PRODUCTION OF HYDROGEN AND/OR OXYGEN VIA WATER SPLITTING PROCESSES
(FR) CYCLE THERMOCHIMIQUE POUR LA PRODUCTION D'HYDROGENE ET/OU D'OXYGENE PAR L'INTERMEDIAIRE DE PROCESSUS DE SEPARATION DE L'EAU
Abstract:
(EN) A method for the production of hydrogen via thermochemical water splitting includes the steps of providing an ammonium sulfite compound, dissolving the ammonium sulfite in water, and oxidizing the aqueous ammonium sulfite solution, wherein hydrogen is produced as a water reduction product associated with the oxidation. If purified air is used instead for the oxidation of aqueous ammonium sulfite solution, the method produces oxygen from the purified air. In a preferred embodiment of the invention, the oxidation is a photooxidation. Light for the photoxidation can be provide by a direct light source, such as solar energy, or indirectly from conversion of electrical energy to light, such as using a UV or visible light lamp. Electrical energy can be provided by a variety of sources, including low cost sources comprising wind driven, water driven (hydroelectric), or nuclear power.
(FR) Cette invention concerne un procédé servant à produire de l'hydrogène par séparation thermochimique de l'eau, ce procédé consistant à former un composé de sulfite d'ammonium, à dissoudre le sulfite d'ammonium dans de l'eau, et à oxyder la solution de sulfite d'ammonium aqueuse, de l'hydrogène étant généré en tant que produit de réduction de l'eau associé à l'oxydation. Si on utilise de l'air purifié à la place de l'eau pour l'oxydation de la solution de sulfite d'ammonium aqueuse, ce procédé produit de l'oxygène à partir de l'air purifié. Dans un mode de réalisation préféré de cette invention, l'oxydation est une photo-oxydation. La lumière pour la photo-oxydation peut être fournie par une source de lumière directe, telle que l'énergie solaire, ou par une source de lumière indirecte provenant de la conversion d'énergie électrique en rayonnement lumineux, par exemple au moyen d'une lampe à UV ou à lumière visible. L'énergie électrique peut être fournie par une grande variété de sources, y compris des sources à faible coût, telles que celles fournies par des centrales éoliennes, des centrales hydroélectriques ou des centrales nucléaires.
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Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BW, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LV, LY, MA, MD, MG, MK, MN, MW, MX, MZ, NA, NG, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RS, RU, SC, SD, SE, SG, SK, SL, SM, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HU, IE, IS, IT, LT, LU, LV, MC, NL, PL, PT, RO, SE, SI, SK, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
US20080289951