This paper reports an experimental study on dissociation of carbon dioxide using a microdischarge plasma reactor at ambient conditions. Carbon dioxide contributes to more than 80% of the greenhouse gas emissions in United States. The microdischarge plasmas can be a very promising method in dissociating gases, including carbon dioxide, due to their lack of need for catalysts, operating at temperatures lower than conventional thermochemical dissociation processes and ease of operation. A microhollow cathode discharge plasma reactor was designed and prototyped for CO2 dissociation. The reactor included metal electrodes that were attached to both sides of a dielectric material with a micro-size through hole. The electrodes and the dielectric material were placed perpendicular to flow direction for dissociation to occur as carbon dioxide passed through the hole. A set of experiments were conducted to investigate the effect of flow rate and applied voltage on the composition of the products, energy conversion efficiency and CO2-to-CO conversion yield of the microdischarge plasma reactor. Temperature of reactants and products were continuously measured; applied voltage was set using a high-voltage power supply; and molar composition of products for each case was analyzed using gas chromatography. Results showed that CO2 dissociation rate, energy conversion efficiency and CO2-to-CO conversion yield increased with applied voltage. Moreover, CO2 dissociation rate and conversion yield decreased while energy conversion efficiency increased with increasing flow rate.
Dissociation of Carbon Dioxide Using a Microdischarge Plasma Reactor
- Views Icon Views
- Share Icon Share
- Search Site
Taylan, O, & Berberoglu, H. "Dissociation of Carbon Dioxide Using a Microdischarge Plasma Reactor." Proceedings of the ASME 2013 International Mechanical Engineering Congress and Exposition. Volume 6A: Energy. San Diego, California, USA. November 15–21, 2013. V06AT07A087. ASME. https://doi.org/10.1115/IMECE2013-64632
Download citation file: