ELECTROCHEMICAL STUDIES OF METHANE ACTIVATION

The direct conversion of methane into useful and more versatile chemicals is a subject that has attracted the interest of numerous researchers. Methane is a refractory molecule and therefore very difficult to convert to upgraded products. In the last thirty years, the electrochemical studies of methane activation have contributed significantly by adding various alternative solutions to this very challenging research problem. In the present communication, the most important findings of low, moderate and high temperature electrochemical studies are reviewed. Since methane activation is easier at elevated temperatures, solid electrolyte cells have been used more extensively. Most of these high-temperature works focused on the production of either synthesis gas or of C-2 compounds. A third vital alternative is the development of the internally reformed methane fuel cell. Results are discussed and compared with those of conventional catalytic processes.