Thermochemical cyclic system for splitting water and/or carbon dioxide by means of cerium compounds and reactions useful therein
Abstract
A thermochemical cyclic process for producing hydrogen from water comprises reacting ceric oxide with monobasic or dibasic alkali metal phosphate to yield a solid reaction product, oxygen and water. The solid reaction product, alkali metal carbonate or bicarbonate, and water, are reacted to yield hydrogen, ceric oxide, carbon dioxide and trialkali metal phosphate. Ceric oxide is recycled. Trialkali metal phosphate, carbon dioxide and water are reacted to yield monobasic or dibasic alkali metal phosphate and alkali metal bicarbonate, which are recycled. The cylic process can be modified for producing carbon monoxide from carbon dioxide by reacting the alkali metal cerous phosphate and alkali metal carbonate or bicarbonate in the absence of water to produce carbon monoxide, ceric oxide, carbon dioxide and trialkali metal phosphate. Carbon monoxide can be converted to hydrogen by the water gas shift reaction.
- Inventors:
-
- Oak Ridge, TN
- Knoxville, TN
- Issue Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- OSTI Identifier:
- 863737
- Patent Number(s):
- 4237105
- Assignee:
- United States of America as represented by United States (Washington, DC)
- Patent Classifications (CPCs):
-
C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01B - NON-METALLIC ELEMENTS
F - MECHANICAL ENGINEERING F02 - COMBUSTION ENGINES F02B - INTERNAL-COMBUSTION PISTON ENGINES
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- thermochemical; cyclic; splitting; water; carbon; dioxide; means; cerium; compounds; reactions; useful; therein; process; producing; hydrogen; comprises; reacting; ceric; oxide; monobasic; dibasic; alkali; metal; phosphate; yield; solid; reaction; product; oxygen; carbonate; bicarbonate; reacted; trialkali; recycled; cylic; modified; monoxide; cerous; absence; produce; converted; gas; shift; thermochemical cyclic; metal phosphate; ceric oxide; carbon dioxide; carbon monoxide; alkali metal; reaction product; producing hydrogen; cyclic process; shift reaction; comprises reacting; metal carbonate; splitting water; solid reaction; metal carbon; water gas; gas shift; produce carbon; producing carbon; useful therein; basic alkali; /423/
Citation Formats
Bamberger, Carlos E, and Robinson, Paul R. Thermochemical cyclic system for splitting water and/or carbon dioxide by means of cerium compounds and reactions useful therein. United States: N. p., 1980.
Web.
Bamberger, Carlos E, & Robinson, Paul R. Thermochemical cyclic system for splitting water and/or carbon dioxide by means of cerium compounds and reactions useful therein. United States.
Bamberger, Carlos E, and Robinson, Paul R. Tue .
"Thermochemical cyclic system for splitting water and/or carbon dioxide by means of cerium compounds and reactions useful therein". United States. https://www.osti.gov/servlets/purl/863737.
@article{osti_863737,
title = {Thermochemical cyclic system for splitting water and/or carbon dioxide by means of cerium compounds and reactions useful therein},
author = {Bamberger, Carlos E and Robinson, Paul R},
abstractNote = {A thermochemical cyclic process for producing hydrogen from water comprises reacting ceric oxide with monobasic or dibasic alkali metal phosphate to yield a solid reaction product, oxygen and water. The solid reaction product, alkali metal carbonate or bicarbonate, and water, are reacted to yield hydrogen, ceric oxide, carbon dioxide and trialkali metal phosphate. Ceric oxide is recycled. Trialkali metal phosphate, carbon dioxide and water are reacted to yield monobasic or dibasic alkali metal phosphate and alkali metal bicarbonate, which are recycled. The cylic process can be modified for producing carbon monoxide from carbon dioxide by reacting the alkali metal cerous phosphate and alkali metal carbonate or bicarbonate in the absence of water to produce carbon monoxide, ceric oxide, carbon dioxide and trialkali metal phosphate. Carbon monoxide can be converted to hydrogen by the water gas shift reaction.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1980},
month = {1}
}