Accession Number : ADA169630

Title :   Electrochemical Reduction of Carbon Dioxide.

Descriptive Note : Final rept.,

Corporate Author : UNITED TECHNOLOGIES CORP FARMINGTON CT HAMILTON STANDARD DIV

Personal Author(s) : LaConti, Anthony B ; Molter, Trent M ; Zagaja, John A

PDF Url : ADA169630

Report Date : May 1986

Pagination or Media Count : 30

Abstract : Many researchers have studied the electrochemical reduction of carbon dioxide and related organic species to form concentrated liquid/gaseous products in laboratory scale hardware. Hamilton Standard has developed a high pressure SPE electrolysis cell capable ofr reducing carbon dioxide streams to form pure, concentrated alcohols, carboxylic acids, and other hydrocarbons. The process is unique in that the byproducts of reaction include oxygen and, under some test conditions water. In addition, a relatively simple test system was designed and constructed permitting both batch and semibatch type electrochemical reduction studies. In this study, cathode materials were developed which 1) had a characteristic high hydrogen overvoltage, and 2) possessed the intrinsic affinity for electrochemical reduction of the carbon dioxide species. In addition, suitable anode electrocatalyst materials were identified. Studies involving the electrochemical reduction of carbon dioxide required the ability to identify and quantify reaction products obtained during cell evaluation. Gas chromatographic techniques were developed along with the establishment of ion chromatographic methods permitting the analysis of organic reaction products. Hamilton Standard has evaluated electrochemical carbon dioxide reduction cells under a variety of test conditions.

Descriptors :   *ELECTROCHEMISTRY, *CARBON DIOXIDE, *REDUCTION(CHEMISTRY), TEST AND EVALUATION, IONS, LIQUIDS, WATER, MATERIALS, HIGH PRESSURE, HYDROGEN, GASES, REDUCTION, OXYGEN, CATHODES, PURITY, HYDROCARBONS, ORGANIC MATERIALS, CONCENTRATION(COMPOSITION), REACTANTS(CHEMISTRY), GAS CHROMATOGRAPHY, STREAMS, CARBOXYLIC ACIDS, ALCOHOLS, CHROMATOGRAPHIC ANALYSIS, ELECTROLYTIC CELLS, ANODES, ELECTROLYSIS, ELECTROCATALYSTS

Subject Categories : Physical Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE