Gas phase electrolyzer process for producing hydrogen

Details Gas phase electrolyzer process for producing hydrogen Gas phase electrolyzer process for producing hydrogen

2007-08-28

2007-08-28

Bos, Steven (Department: 1754)

Chemistry of inorganic compounds

Hydrogen or compound thereof

Elemental hydrogen

C204S174000, C204S520000, C423S542000, C423S539000

Reexamination Certificate

active

11145320

ABSTRACT:
The invention provides a method for a sulfur based hydrogen production cycle wherein the sulfur products are maintained in a gaseous state throughout the cycle. The cycle includes a decomposition of a gaseous phase sulfur trioxide to sulfur dioxide and water in a decomposition reactor and an oxidation of gaseous sulfur trioxide with H2O in an electrolyzer to form sulfur trioxide and hydrogen. Costs are reduced by elimination of energy costs previous necessary to convert the sulfuric products from liquid to gas and back again and by extending the lifespan of decomposition catalysts through the elimination of water in an SO2/SO3stream.

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