Korean Journal of Materials Research (한국재료학회지)

Materials Research Society of Korea (한국재료학회)
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Solution Combustion Synthesis of LaFeO3 Powders and Their Carbon Ignition Property

용액연소합성법을 이용한 LaFeO3 분말 합성 및 탄소 연소 특성

  • Rang, Da-Sik (Department of Materials Science & Engineering, Eco-Product & Materials Education Center, Seoul National University of Technology) ;
  • Lee, Tae-Kun (Department of Materials Science & Engineering, Eco-Product & Materials Education Center, Seoul National University of Technology) ;
  • Hwang, Yeon (Department of Materials Science & Engineering, Eco-Product & Materials Education Center, Seoul National University of Technology) ;
  • Bae, Kwang-Hyun (Korea Institute of Geoscience & Mineral Resources, Minerals & Materials Processing Division) ;
  • Cho, Sung-Baek (Korea Institute of Geoscience & Mineral Resources, Minerals & Materials Processing Division)
  • 강대식 (서울산업대학교 신소재공학과, 친환경소재제품인력양성센터) ;
  • 이태근 (서울산업대학교 신소재공학과, 친환경소재제품인력양성센터) ;
  • 황연 (서울산업대학교 신소재공학과, 친환경소재제품인력양성센터) ;
  • 배광현 (한국지질자원연구원, 자원활용소재연구부) ;
  • 조성백 (한국지질자원연구원, 자원활용소재연구부)
  • Published : 2007.07.27
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Abstract

[ $LaFeO_3$ ] powders were prepared as the oxidation catalyst materials to reduce the emission of particulate matters from diesel engine and their catalytic effects on the oxidation of carbon were investigated. Solution combustion method was employed for the powder synthesis, which uses highly exothermic and selfsustaining reactions. In this study $LaFeO_3$ powders were synthesized at $400^{\circ}C$ as varying the ratio ($\Phi$) of fuel (citric acid) and oxidizer (metal nitrate), and their phase and carbon ignition property were examined. As $\Phi$ decreases, the crystallinity of synthesized $LaFeO_3$ powders enhanced. By calcining at $700^{\circ}C$, all the powders synthesized at various $\Phi$ fully crystallized. The calcined $LaFeO_3$ powders showed carbon ignition temperature as low as $501{\sim}530^{\circ}C$, which implied the decrease of the ignition temperature by $120{\sim}150^{\circ}C$.

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References

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