Co-Electrolysis Of Co2 Lab Report

METHODOLOGY

1) CO-ELECTROLYSIS OF CO2 AND H2O The co-electrolysis of water vapor and carbon dioxide can be summarized by the following reaction: The first reaction to be considered is the reverse reaction of water gas shift: Another side reaction that can also affect the electrolysis operation is the formation of coke (carbon deposition on the surface of the electrolysis cell) as follows: At a temperature below 700 ° C, and in the presence of Ni as catalyst methane is formed according to the following reaction: Therefore it is preferable to use temperatures above 700 ° C to avoid the formation of methane. The reaction mechanism of co-electrolysis of H2O and CO2 is complicated and not fully understood because it includes three simultaneous

While ethanol is formed from methanol by complicated and slow reaction, ethanol is rapidly converted to higher alcohols via a rapid carbon chain growth mechanism. We used the Rh-based catalysts, which allow you to have good selectivity to ethanol and minimize the selectivity to other products (methane, methanol, hydrocarbons...). This is very important because it will allow us to reduce the cost of investment operations thus reducing separation and purification costs. The catalyst used is Rh/SiO2 which has high selectivity to ethanol. The addition of vanadium as a promoter increases the catalyst activity and selectivity to

Depicted is a planar-geometry solid oxide cell (as opposed to tubular geometry and other existing geometries). Planar cells are stacked with electrical interconnect plates between the electrodes of adjacent cells to form a cell stack. The electrolyte is a dense thin oxide ion conducting ceramic, usually yttria-stabilized zirconia. The electrolyte layer is sandwiched between the two porous electrodes, which are typically made of a composite of the electrolyte material and an electron conducting material (either a metal or an electronically conductive ceramic) that also provides electrocatalytic activity for the reactions (or sometimes other materials are added to enhance electrocatalytic