Production of hydrogen via catalytic decomposition of aqueous alkali formates. [3-step process]
Experimental work is described on a system for the production of hydrogen and hydrogen-steam mixtures via the use of aqueous potassium formate as an intermediate, The system involves three basic process steps. The synthesis of potassium formate by a noncatalytic reaction of carbon monoxide with an aqueous solution containing potassium carbonate and bicarbonate. The second step is the catalytic decomposition of the aqueous potassium formate in a trickle-phase, fixed-bed system to yield a hydrogen rich gas. The potassium formate decomposition products consist of a mixture of potassium carbonate and bicarbonate. The third step involves purification of the gas from step 2 by absorption of carbon dioxide at a reduced temperature using the product aqueous solution from step 2. The process may be applied to any carbon monoxide containing gas and would effect the removal of carbon monoxide from the gas and its conversion to a separate stream of pure hydrogen. Experimental work on all phases of the process is briefly described, but emphasis is placed on the catalytic decomposition step. Hydrogen purities of 99 mol percent have been generated in this work. Preliminary equilibrium data are also presented relative to steps 2 and 3 of the process.
- Research Organization:
- Conoco Coal Development Co., Library, PA
- OSTI ID:
- 7336430
- Journal Information:
- Am. Chem. Soc., Div. Fuel Chem., Prepr.; (United States), Vol. 21:7; Conference: American Chemical Society meeting, San Francisco, CA, USA, 29 Aug 1976; Other Information: See CONF-760826--P4
- Country of Publication:
- United States
- Language:
- English
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