Overview of Conversion of Greenhouse Gas Carbon dioxide to Hydrocarbons

摘要

Conversion of green house gas carbon dioxide to abate global warming is of interest to save the planet from the catastrophe. Carbon dioxide can be used for the synthesis of important petrochemicals like methanol, ethylene etc. Various aspects of CO_2 conversion have been extensively studied in both aqueous and non-aqueous medium. The process requires an efficient catalyst and energy and strongly depends on electrocatalyst used for the reduction products. Both in aqueous and non aqueous environments and at higher over potentials the selectivity towards desired products is still relatively low. The major limitation is the low solubility of carbon dioxide in electrolyte and high over potential at which this reaction proceeds. In this presentation, various approaches for the reduction of CO_2 to useful petrochemical products will be discussed with particular emphasis on the solid-state electrochemical method. In addition different parameter affecting the conversion of CO_2 and the optimum conditions will be discussed.