10th PESXM - Lecture of Prof. Costas G. Vayenas

Electrochemical promotion of the hydrogenation of CO2 on Ru deposited on a BZY proton conductor

The kinetics and the electrochemical promotion of the hydrogenation of CO₂ on polycrystalline Ru deposited on BZY (BaZr_0.85Y_0.15O_3−α + 1 wt% NiO), a proton conductor in wet atmospheres, with α ≈ 0.075, was investigated at temperatures 300–450 °C and atmospheric pressure. Methane and CO were the only detectable products and the selectivity to CH₄ could be reversibly controlled between 15% and 65% by varying the catalyst potential by less than 1.2 V.

Film on LCEP produced by Dr. Enea in 1994