Gas-Phase Plasma Decomposition Processes

The endothermic plasma-chemical process of carbon dioxide decomposition, illustrated in Fig. 5-1, can be presented by the summarizing formula 

The enthalpy of the process is fairly high and close to that corresponding to hydrogen production from water. The total decomposition process (5-1) starts with and is limited by CO2 dissociation  

Combination of reactions (5-1) and (5-3) together with recirculation of CO2 results in the two-stage cycle of hydrogen production from water, which is of special interest in the 

Major Experimental Results on CO2 Dissociation in Different Plasma Systems and Energy Efficiency of the Process 

CO2 dissociation was investigated in numerous thermal and non-thermal plasma systems. The most critical point in the experiments was the maximization of the energy efficiency of the process (5-1), r], determined by the ratio of the dissociation enthalpy AH = 2.9eV/mol to the actual energy cost Eco of one CO molecule produced in a plasma system  

---