A low temperature SOFC as a self-promoted reactor for CO2 catalytic hydrogenation
Christos Chatzilias, Eftychia Martino, Constantinos G. Vayenas, Georgios Kyriakou, Alexandros Katsaounis
Abstract
Low temperature operation of Solid Oxide Fuel Cells (SOFC) typically provides limited and insufficient power for practical applications. The present work demonstrates how this limited power can be utilized effectively for the promotion of a catalytic reaction taking place on a catalyst electrode with minimal energy consumption and environmental impact. A novel design of a low-temperature SOFC reactor is reported and utilized for the electrochemical promotion of CO2 hydrogenation, a reaction of both environmental and industrial importance. The power demand for the enhancement of the catalytic reaction rates is produced in situ by the cell during the parallel oxidation of hydrogen which acts both as a reactant and as a fuel. The results of the present study pave the way for the utilization of Electrochemical Promotion of Catalysis (EPOC) in a wireless configuration, using exclusively the internal power of low temperature, low pressure, SOFCs.