페로브스카이트 촉매에서 A-Site 치환에 따른 촉매활성 변화

• 영문명: Catalytic Activity Change of Perovskite Catalysts with A-Site Substitution
• 발행기관: 한국응용과학기술학회 (구.한국유화학회)
• 저자명: 함현식(Hahm HyunSik) 김규성(Kim KyuSung) 안성환(Ahn SungHwan) 신기석(Shin KiSeok) 김송형(Kim SongHyoung) 박홍수(Park HongSoo)
• 간행물 정보: 『한국응용과학기술학회지』한국유화학회지 제24권 제3호, 272~277쪽, 전체 6쪽
• 주제분류: 공학 > 화학공학
• 파일형태: PDF
• 발행일자: 2007.09.30

영문 초록

Catalytic activity changes of perovskite catalysts were examined with their A-site substitution. For the preparation of catalysts, Mn was used for B-site component and La, Ce, Sr, Ba, Ca, Ag were used for A-site component of the perovskite catalysts(ABO3) The effect of calcination temperature on methane combustion and perovskite structure was also investigated. The surface area and adsorbed oxygen species were tested with BET apparatus and O2-TPD, respectively. Perovskite catalysts whose A-site was partially substituted needed higher calcination temperature than un-substituted one to form the perovskite structure. From O2-TPD experiment, it was found that methane combustion activity was directly related to the oxygen desorbing ability of the catalysts. The prepared catalyst(LM-7) was stable at 600^{circ}C for 72 hours of reaction.