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Author Faus Ferrer, Carlota |
Abstract This final grade work aims to reduce carbon dioxide into carbon monoxide and subsequently achieve its hydrogenation to form methane, in a cold argon plasma reactor. It has been worked under atmospheric conditions and with a nickel catalyst supported by alumina. This technique is a way to reduce CO2 emissions into the atmosphere and thus obtain higher value-added products such as CH4. The main objective is the influence of the variation of the initial concentration of CO2 in the reactor, and how it affects the performance of the methane formation. A molar ratio of 1: 4 (CO2 / H2) has been applied, since it presents the best results for the methanization reaction. The maximum yield obtained from CO has been around 90% with an initial CO2 concentration of 5%. In this work, it has been seen that the optimal condition to obtain the highest methane yield has been 5% CO2 and 50% Ar, thus obtaining 6.2% methane yield. However, with 2% CO2 at the reactor inlet, a good CH4 yield can also be obtained. Finally, it is worth mentioning the importance of the argon flow. There is a clear compromise between the argon flow rate and the initial CO2 concentration. If the initial flow of argon is increased too much, the argon molecules do not have time to be ionized and therefore a stable plasma cannot be generated. However, if the CO2 concentration is increased too much, the argon flow rate is not sufficient when it enters the reactor and therefore the plasma formation will be insufficient. |
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Director Pou Ibars, Josep Oriol |
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Degree IQS SE - Undergraduate Program in Chemical Engineering |
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Date 2020-09-08
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