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http://dx.doi.org/10.14478/ace.2020.1036

A Study on the Reaction Characteristics of Carbon Dioxide Methanation Catalyst for Full-Scale Process Application  

Lee, Ye Hwan (Department of Environmental Energy Engineering, Graduate School of Kyonggi University)
Kim, Sung Su (Department of Environmental Energy Engineering, Kyonggi University)
Publication Information
Applied Chemistry for Engineering / v.31, no.3, 2020 , pp. 323-327 More about this Journal
Abstract
The reaction characteristics of Ni/CeO2-X which is highly efficient at a low temperature was investigated for an application to carbon dioxide methanation process. The CeO2-X support was obtained by the heat treatment of Ce(NO3)3 at 400 ℃ and the catalyst was prepared by impregnation process. The operating parameters of the experiment were the internal pressure of the reactor, the composition of oxygen, methane, and hydrogen sulfide in the inlet gas and the reaction temperature. When Ni/CeO2-X was used for the carbon dioxide methanation reaction, the CO2 conversion rate increased by more than 25% as the pressure increased from 1 to 3 bar. The increase was large at a low reaction temperature. When both oxygen and methane were in the inlet gas, the CO2 conversion rate of the catalyst decreased by up to 16 and 4%, respectively. As the concentration of oxygen and methane increased, the reduction rate of the CO2 conversion rate tended to increase. In addition, the hydrogen sulfide in the inlet gas reduced the CO2 conversion rate by up to 7% and caused catalyst deactivation. The results of this study will be useful as basic data for the carbon dioxide methanation process.
Keywords
Carbon dioxide; Methanation; Ni; Reaction characteristic;
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Times Cited By KSCI : 6  (Citation Analysis)
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