Thermochemical generation of hydrogen and carbon dioxide

Details Thermochemical generation of hydrogen and carbon dioxide Thermochemical generation of hydrogen and carbon dioxide

1980-11-06

1984-04-03

McCarthy, Helen M.

Chemistry of inorganic compounds

Carbon or compound thereof

Oxygen containing

422189, 423539, 423648R, C01B 1300

Patent

active

044407335

ABSTRACT:
Mixing of carbon in the form of high sulfur coal with sulfuric acid reduces the temperature of sulfuric acid decomposition from 830.degree. C. to between 300.degree. C. and 400.degree. C. The low temperature sulfuric acid decomposition is particularly useful in thermal chemical cycles for splitting water to produce hydrogen. Carbon dioxide is produced as a commercially desirable byproduct. Lowering of the temperature for the sulfuric acid decomposition or oxygen release step simplifies equipment requirements, lowers thermal energy input and reduces corrosion problems presented by sulfuric acid at conventional cracking temperatures. Use of high sulfur coal as the source of carbon for the sulfuric acid decomposition provides an environmentally safe and energy efficient utilization of this normally polluting fuel.

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