Development of Iron Catalyst Technologies to Improve Exhaust-emission Purification Performance for Gasoline Engines

ガソリンエンジンの排ガス浄化性能を向上する鉄触媒技術の開発

Iron should be one of candidates as an alternative material for Palladium due to its high oxidation activity. According to investigation results with Iron based three-way catalysts, it was found that the Iron particles accelerate the deterioration of oxygen storage materials after severe thermal aging. Several chemical analysis results indicate the Iron location on the support materials should be key methodology to improve catalytic activity. Therefore to avoid contact with Iron particles and oxygen storage materials leads better purification performance of Iron loaded TWC as compared with current Pd loaded TWC.三元触媒のPd代替材料として,酸化性能を有する鉄触媒の排ガス浄化性能と熱劣化特性を調べた.鉄は酸素吸蔵材の熱劣化を促進するため,触媒性能が低下することがわかった.そこで,鉄の担持技術を改良し,鉄と酸素吸蔵材の接触を抑制した触媒は,熱耐久後でもPd担持触媒よりも高い排ガス浄化性能を示すことを確認した.

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  • English
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  • Accession Number: 01667922
  • Record Type: Publication
  • Source Agency: Japan Science and Technology Agency (JST)
  • Files: TRIS, JSTAGE
  • Created Date: Jan 31 2018 3:17PM