6. Using the energy efficiency of CO2 dissociation into CO and 02 in thermal pla
ID: 1027256 • Letter: 6
Question
6. Using the energy efficiency of CO2 dissociation into CO and 02 in thermal plasma in the regime of ideal quenching at specific energy input 3 eV/imol found in Problem 3, calculate CO2 conversion degree in this case. Keep in mind that enthalpy of CO2 decomposition is 2.9 eV/mol (see Eq. 5-1) Inorganic Gas-Phase Plasma Decomposition Processes 5.1.CO2: DISSOCIATION IN PLASMA, THERMAL, AND NON -THERMAL MECHANISMS .1.1. Fundamental and Applied Aspects of the CO2 Plasma Chemistry The endothermic plasma-chemical process of carbon dioxide decomposition, illustrated in Fig. 5-1, can be presented by the summarizing formula CO2 CO +-02, H = 2.9 eV/mol. (5-1) The enthalpy of the process is fairly high and close to that corresponding to hydrogen production from water. The total decomposition process (5-I) starts with and is limited by CO2 dissociation: (5-2) Question is: 6. Using the energy efficiency of CO2 dissociation into CO and O2 in thermal plasma in the regime of ideal quenching at specific energy input 3 eV/mol found in Problem 3, calculate CO2 conversion degree in this case. Keep in mind that enthalpy of CO2 decomposition is 2.9 eV/mol (see Eq. 5-1). Energy Efficiency would be 50%Explanation / Answer
As stated in the graph, point (5) is Ideal quenching. herefore we will see the curve with number 5.
In x axis 3eV when vertical line is made, it crosses the curve 5 at a point, This point is nearly 50 in y axis.
Therefore, energy efficiency would be 50%.
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