Title

Carbon Dioxide Reduction and Water Electrolysis System

Date

1968

Index Abstract

Not Available

Photo Quality

Complete

Report Number

AMRL TR 67-227

Creator

Kim, Byung C.

Kolic, Edwin S.

Cherry, Robert H.

Clifford, John E.

Corporate Author

Battelle Memorial Institute

Laboratory

Aerospace Medical Research Laboratories

Extent

84

Identifier

AD0673903

Access Rights

Distribution of this document is unlimited. It may be released to the Clearinghouse, Department of Commerce, for sale to the general public.

Distribution Classification

1

Contract

AF 33(615)-3444

DoD Project

6373

DoD Task

637302

DTIC Record Exists

Yes

Distribution Change Authority Correspondence

None

Distribution Conflict

No

Abstract

An integrated system for oxygen recovery from carbon dioxide was investigated as a breadboard laboratory model of nominal 1/2-man capacity. System design for carbon dioxide reduction was based on alternate operation of two Bosch reactors with periodic cool down for removal of carbon and replenishment of catalyst. Experimental studies demonstrated attainment of the design objectives of a carbon-to-catalyst ratio above 20 and an overall carbon- packing density of 0.45 g/cu.cm. in the catalyst chamber. Degradation of Bosch reactor materials during extended operation was a problem that was not completely resolved. Experimental studies indicated that a regenerable solid- adsorbent based on combinations of silica gel and molecular sieve operating on alternate cycles of absorption and desorption can be used for efficient transfer of water vapor from the Bosch recycle gas to a water-vapor electrolysis cell. The original matrix-type water-vapor electrolysis unit with Pd-25Ag hydrogen diffusion cathodes did not perform satisfactorily and was replaced by a water- vapor electrolysis unit with phosphoric acid electrolyte for satisfactory evaluation of water-vapor transfer for the integrated system.

Report Availability

Full text available

Date Issued

1968-05

Provenance

RAF Centre of Aviation Medicine

Type

report

Format

1 online resource