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Pt-Ru Alloy Catalysts with Doped CeO₂ Interlayer for Methane Conversion
길민종(Min Jong Kil),박희성(Heesung Park),김형준(Hyong June Kim),양병찬(Byung Chan Yang),이제민(Jemin Lee),김예슬(Ye Seul Kim),선호중(Hojoong Sun),봉철우(Cheolwoo Bong),박문수(Moon Soo Bak),안지환(Jihwan An) Korean Society for Precision Engineering 2020 한국정밀공학회지 Vol.37 No.10
The necessity of converting toxic gas has arisen from the usage of perfluorinated compounds (PFCs), volatile organic compounds (VOCs), and hydrocarbon gases in the semiconductor process and laboratories. Also, recent strong regulations on the emission gas from vehicles also present the need for the highly efficient chemical conversion of toxic emission gases. In this study, we present the fabrication of platinum and ruthenium alloy metal catalysts on the yttria-stabilized zirconia balls, and the application of the metal catalysts to the catalytic converter for methane oxidation. The platinum and ruthenium alloy metal catalysts showed better performance than the platinum catalyst, i.e., 75% increase in the methane conversion efficiency at 500℃. Such improvement seems to be because of the facile oxygen supply from the ruthenium surface. Also, the platinum and ruthenium alloy catalysts with the doped cerium oxide interlayer showed better thermal stability than the platinum and ruthenium alloy metal catalysts, possibly because of the stronger bonding between the metal and oxide support.