Process for producing hydrogen and oxygen from water. [ferriferrous oxide, HCl, ferric chloride]

Patent · Tue Dec 21 04:00:00 EST 1976

OSTI ID:7225447

Pangborn, J B; Sharer, J C; Elkins, R H

A process is proposed for the production of hydrogen and oxygen from water comprising the steps of forming ferric chloride from ferriferrous oxide by reaction with a chloride ion yielding substance, reducing the ferric chloride produced with a reducing agent to produce ferrous chloride, thermally reducing the ferric chloride to produce ferrous chloride, then oxidizing either the ferrous compound or metallic iron with water so as to produce hydrogen. The metallic iron may be formed by reducing the ferrous compound with hydrogen. Four specific reactant regenerative closed cycle systems are disclosed utilizing the process of this invention for the production of hydrogen with high energy efficiencies.

• Assignee: American Gas Association
• Patent Number(s): US 3998942
• OSTI ID: 7225447
• Country of Publication: United States
• Language: English

Related Subjects

08 HYDROGEN
080102* -- Hydrogen-- Production-- Thermochemical Processes
CHLORIDES
CHLORINE COMPOUNDS
CRYOGENIC FLUIDS
ELEMENTS
FLUIDS
HALIDES
HALOGEN COMPOUNDS
HYDROCHLORIC ACID
HYDROGEN COMPOUNDS
HYDROGEN PRODUCTION
INORGANIC ACIDS
IRON CHLORIDES
IRON COMPOUNDS
NONMETALS
OXYGEN
OXYGEN COMPOUNDS
PRODUCTION
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENT COMPOUNDS
WATER