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Title: 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 cyclic 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:
;
OSTI Identifier:
5497598
Assignee:
TIC; ERA-05-023769; EDB-80-065000
DOE Contract Number:  
W-7405-ENG-26
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
08 HYDROGEN; HYDROGEN PRODUCTION; THERMOCHEMICAL PROCESSES; ALKALI METAL COMPOUNDS; CERIUM OXIDES; OXYGEN; PHOSPHATES; PRODUCTION; WATER; CERIUM COMPOUNDS; CHALCOGENIDES; CRYOGENIC FLUIDS; ELEMENTS; FLUIDS; HYDROGEN COMPOUNDS; NONMETALS; OXIDES; OXYGEN COMPOUNDS; PHOSPHORUS COMPOUNDS; RARE EARTH COMPOUNDS; 080102* - Hydrogen- Production- Thermochemical Processes

Citation Formats

Bamberger, C.E., and Robinson, P.R. Thermochemical cyclic system for splitting water and/or carbon dioxide by means of cerium compounds and reactions useful therein. United States: N. p., Web.
Bamberger, C.E., & Robinson, P.R. Thermochemical cyclic system for splitting water and/or carbon dioxide by means of cerium compounds and reactions useful therein. United States.
Bamberger, C.E., and Robinson, P.R. . "Thermochemical cyclic system for splitting water and/or carbon dioxide by means of cerium compounds and reactions useful therein". United States.
@article{osti_5497598,
title = {Thermochemical cyclic system for splitting water and/or carbon dioxide by means of cerium compounds and reactions useful therein},
author = {Bamberger, C.E. and Robinson, P.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 cyclic 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 = {},
month = {}
}