skip to main content
DOE Patents title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Method for thermochemical decomposition of water

Abstract

Water is thermochemically decomposed to produce hydrogen by the following sequence of reactions: KI, NH.sub.3, CO.sub. 2 and water in an organic solvent such as ethyl or propyl alcohol are reacted to produce KHCO 3 and NH.sub.4 I. The KHCO.sub.3 is thermally decomposed to K.sub.2 CO.sub.3, H.sub.2 O and CO.sub.2, while the NH.sub.4 I is reacted with Hg to produce HgI.sub.2, NH.sub.3 and H.sub.2. The K.sub.2 CO.sub.3 obtained by calcining KHCO.sub.3 is then reacted with HgI.sub.2 to produce Hg, KI, CO and O.sub.2. All products of the reaction are recycled except hydrogen and oxygen.

Inventors:
 [1];  [2]
  1. Oak Park, IL
  2. Mokena, IL
Issue Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
OSTI Identifier:
862742
Patent Number(s):
4002729
Assignee:
United States of America as represented by United States Energy (Washington, DC)
Patent Classifications (CPCs):
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01C - AMMONIA
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
method; thermochemical; decomposition; water; thermochemically; decomposed; produce; hydrogen; following; sequence; reactions; nh; organic; solvent; ethyl; propyl; alcohol; reacted; khco; thermally; hg; hgi; obtained; calcining; products; reaction; recycled; oxygen; produce hydrogen; thermally decomposed; organic solvent; thermally decompose; following sequence; propyl alcohol; /423/

Citation Formats

Abraham, Bernard M, and Schreiner, Felix. Method for thermochemical decomposition of water. United States: N. p., 1977. Web.
Abraham, Bernard M, & Schreiner, Felix. Method for thermochemical decomposition of water. United States.
Abraham, Bernard M, and Schreiner, Felix. Tue . "Method for thermochemical decomposition of water". United States. https://www.osti.gov/servlets/purl/862742.
@article{osti_862742,
title = {Method for thermochemical decomposition of water},
author = {Abraham, Bernard M and Schreiner, Felix},
abstractNote = {Water is thermochemically decomposed to produce hydrogen by the following sequence of reactions: KI, NH.sub.3, CO.sub. 2 and water in an organic solvent such as ethyl or propyl alcohol are reacted to produce KHCO 3 and NH.sub.4 I. The KHCO.sub.3 is thermally decomposed to K.sub.2 CO.sub.3, H.sub.2 O and CO.sub.2, while the NH.sub.4 I is reacted with Hg to produce HgI.sub.2, NH.sub.3 and H.sub.2. The K.sub.2 CO.sub.3 obtained by calcining KHCO.sub.3 is then reacted with HgI.sub.2 to produce Hg, KI, CO and O.sub.2. All products of the reaction are recycled except hydrogen and oxygen.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1977},
month = {1}
}

Patent:

Save / Share: