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Title: Process for the thermochemical production of hydrogen

Abstract

Hydrogen is thermochemically produced from water in a cycle wherein a first reaction produces hydrogen iodide and H2SO4 by the reaction of iodine, sulfur dioxide and water under conditions which cause two distinct aqueous phases to be formed, i.e., a lighter sulfuric acid-bearing phase and a heavier hydrogen iodide-bearing phase. After separation of the two phases, the heavier phase containing most of the hydrogen iodide is treated, e.g., at a high temperature, to decompose the hydrogen iodide and recover hydrogen and iodine. The H2SO4 is pyrolyzed to recover sulfur dioxide and produce oxygen.

Inventors:
; ; ; ; ;
Issue Date:
Research Org.:
General Atomics, San Diego, CA (United States)
Sponsoring Org.:
US Atomic Energy Commission (AEC)
OSTI Identifier:
863086
Patent Number(s):
4089940
Application Number:
05/786009
Assignee:
General Atomic Company (San Diego, CA)
Patent Classifications (CPCs):
C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01B - NON-METALLIC ELEMENTS
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
DOE Contract Number:  
AC02-80ET26225
Resource Type:
Patent
Resource Relation:
Patent File Date: 1977 Apr 08
Country of Publication:
United States
Language:
English
Subject:
process; thermochemical; production; hydrogen; thermochemically; produced; water; cycle; reaction; produces; iodide; iodine; sulfur; dioxide; conditions; distinct; aqueous; phases; formed; lighter; sulfuric; acid-bearing; phase; heavier; iodide-bearing; separation; containing; treated; temperature; decompose; recover; pyrolyzed; produce; oxygen; phase containing; sulfuric acid; sulfur dioxide; aqueous phase; hydrogen iodide; recover hydrogen; produces hydrogen; thermochemical production; reaction produces; chemical product; /423/

Citation Formats

Norman, John H., Russell, Jr., John L., Porter, II, John T., McCorkle, Kenneth H., Roemer, Thomas S., and Sharp, Robert. Process for the thermochemical production of hydrogen. United States: N. p., 1978. Web.
Norman, John H., Russell, Jr., John L., Porter, II, John T., McCorkle, Kenneth H., Roemer, Thomas S., & Sharp, Robert. Process for the thermochemical production of hydrogen. United States.
Norman, John H., Russell, Jr., John L., Porter, II, John T., McCorkle, Kenneth H., Roemer, Thomas S., and Sharp, Robert. Sun . "Process for the thermochemical production of hydrogen". United States. https://www.osti.gov/servlets/purl/863086.
@article{osti_863086,
title = {Process for the thermochemical production of hydrogen},
author = {Norman, John H. and Russell, Jr., John L. and Porter, II, John T. and McCorkle, Kenneth H. and Roemer, Thomas S. and Sharp, Robert},
abstractNote = {Hydrogen is thermochemically produced from water in a cycle wherein a first reaction produces hydrogen iodide and H2SO4 by the reaction of iodine, sulfur dioxide and water under conditions which cause two distinct aqueous phases to be formed, i.e., a lighter sulfuric acid-bearing phase and a heavier hydrogen iodide-bearing phase. After separation of the two phases, the heavier phase containing most of the hydrogen iodide is treated, e.g., at a high temperature, to decompose the hydrogen iodide and recover hydrogen and iodine. The H2SO4 is pyrolyzed to recover sulfur dioxide and produce oxygen.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1978},
month = {1}
}