Production of hydrogen. [metals oxidation/carbon reduction process; and cyyclic electrolytic; carbon reduction]

Patent · Tue May 13 00:00:00 EDT 1980

OSTI ID:5407627

Batzold, J S; Pan, Y

Hydrogen is produced in a cyclic metals oxidation/carbon reduction process. In particular, elemental iron or cobalt is oxidized in an aqueous solution of an alkali metal hydroxide with the simultaneous generation of hydrogen. The iron or cobalt oxidation products of the reaction are thereafter reduced to elemental iron or cobalt by contact with a carbonaceous reducing agent at elevated temperatures and the reduced material recycled for reoxidation. In an alternate operation, hydrogen is produced in a cyclic electrolytic/carbon reduction process wherein elemental iron or cobalt is electrolytically converted to corresponding oxidation products with the simultaneous generation of hydrogen. The electrolytic cell used in this process comprises a cathode, a magnetic anode that is adapted to attract and retain iron and/or cobalt particles and an aqueous electrolyte. In the electrolytic cell, hydrogen is produced at the cathode and metal particles contained on the magnetic electrode are oxidized to a non-ferromagnetic specie, such as ferrous hydroxide. The nonferromagnetic species are recovered from the electrolytic cell and thereafter reconverted to particulate elemental iron and/or cobalt by treating the material with a carbonaceous reductant at an elevated temperature.

• Assignee: Exxon Research and Engineering Co
• Patent Number(s): US 4202744
• OSTI ID: 5407627
• Resource Relation: Patent File Date: Filed date 14 May 1979; Other Information: PAT-APPL-38925
• Country of Publication: United States
• Language: English

Related Subjects

08 HYDROGEN
HYDROGEN PRODUCTION
AQUEOUS SOLUTIONS
CARBON
COBALT
ELECTROLYSIS
IRON
MATERIALS RECOVERY
METALS
OXIDATION
PRODUCTION
REDUCTION
SODIUM HYDROXIDES
ALKALI METAL COMPOUNDS
CHEMICAL REACTIONS
DISPERSIONS
ELEMENTS
HYDROGEN COMPOUNDS
HYDROXIDES
LYSIS
MANAGEMENT
MIXTURES
NONMETALS
OXYGEN COMPOUNDS
PROCESSING
RECOVERY
SODIUM COMPOUNDS
SOLUTIONS
TRANSITION ELEMENTS
WASTE MANAGEMENT
WASTE PROCESSING
080100* - Hydrogen- Production