Process for producing hydrogen from water using cobalt and barium compounds and compositions useful therein. [Patent application]

Patent · Thu Aug 17 04:00:00 EDT 1978

OSTI ID:6014051

Bamberger, C E; Richardson, D M

A thermochemical process for producing hydrogen comprises the step of reacting CoO with BaO or Ba(OH)/sub 2/ in the presence of steam to produce H/sub 2/ and novel double oxides of Ba and Co having the empirical formulas BaCoO/sub 2/./sub 33/ and Ba/sub 2/CoO/sub 3/./sub 33/. The double oxide can be reacted with H/sub 2/O to form Co/sub 3/O/sub 4/ and Ba(OH)/sub 2/ which can be recycled to the original reaction. The Co/sub 3/O/sub 4/ is converted to CoO by either of two procedures. In one embodiment Co/sub 3/O/sub 4/ is heated, preferably in steam, to form CoO. In another embodiment Co/sub 3/O/sub 4/ is reacted with aqueous HCl solution to produce CoCl/sub 2/ and Cl/sub 2/. The CoCl/sub 2/ is reacted with H/sub 2/O to form CoO and HCl and the CoO is recycled to the initial reaction step. The Cl/sub 2/ can be reacted with H/sub 2/O to produce HCl. HCl can be recycled for reaction with Co/sub 3/O/sub 4/.

• Assignee: Department of Energy
• Patent Number(s): None
• OSTI ID: 6014051
• Country of Publication: United States
• Language: English

Related Subjects

08 HYDROGEN
080102* -- Hydrogen-- Production-- Thermochemical Processes
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COBALT COMPOUNDS
COBALT OXIDES
CRYOGENIC FLUIDS
ELEMENTS
FLUIDS
HYDROGEN COMPOUNDS
HYDROGEN PRODUCTION
NONMETALS
OXIDES
OXYGEN
OXYGEN COMPOUNDS
PRODUCTION
STEAM
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENT COMPOUNDS
WATER