Abstract
Pt loaded La 7.33BaYSi 6O 25.5 (Pt/La 7.33BaYSi 6O 25.5) catalyst was investigated for oxidation of hydrocarbon species and for reduction of NO by hydrocarbon species. Pt/La 7.33BaYSi 6O 25.5 catalyst exhibited higher activity for NO reduction by alkane (C 3H 8), alkene (C 3H 6) and aromatic (C 7H 8), than Pt/Al 2O 3 catalyst and Pt/CeO 2–ZrO 2 (CZ, CeO 2/ZrO 2 weight ratio was 1/1) catalyst. The oxidizing power for hydrocarbon species of carrier affected the catalytic activity for NO reduction. In addition, oxidation of adsorbed hydrocarbon on La 7.33BaYSi 6O 25.5 was observed by FT-IR measurement. It was presumed that the catalytic activity for NO reduction is affected by adsorbed form of hydrocarbon.
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