CO₂ to Green Fuels and Chemicals

What are g-Fuels and g-Chemicals?

g-Fuels and g-Chemicas are green products obtained from CO₂ combined with Atomic Hydrogen available during water electrolysis reactions. This process is known as CO₂ electroreduction and the reaction energy necessarily comes from Green Power -Solar, Wind-.

Target g-Products are mainly g-Ethanol and g-Ethylene. g-Methane, or g-Propanol can be obtained as well among others. These products are the building blocks of a new green chemistry.

Catalysts interacting with the electrodes can direct selectivity towards the product of interest for each desired application.

How g-Fuels and g-Chemicals are made?
Water electrolysis for CO₂ Electroreduction

As long as water electrolysis takes place, the reaction is similar to that for hydrogen obtention. There are two main differences:

• Carbon dioxide adsorbed on the cathode catalytic surface is available for its reduction into hydrocarbons during water electrolysis reactions.

• Water electrolysis to H₂ and O₂ needs more specific energy – about 7% more potential – than carbon dioxide reduction reaction:
  
  • Water electrolysis to H₂ and O₂ ∆E = 1.23 V
  • CO₂ reduction to Ethanol and O₂ ∆E = 1.15 V

The equipment consisting of the catalysts, the membrane and the rest of the materials must show appropriate conversion, selectivity, conductivity, stability, and tightness under the operating conditions of the industrial electrolyser.

Greencap Technologies S.L. is a Spanish company registered in the commercial registry of Murcia,
in volume 360, page 77, entry 1, with page MU-110695. TIN B56154636.