JP2558566B

PURPOSE:To efficiently reduce nitrogen oxides in exhaust gas by a catalyst obtained by supporting perovskite type composite oxide represented by a specific general formula on a solid acid carrier. CONSTITUTION:A catalyst for catalytically reducing nitrogen oxides using hydrocarborns and/or an oxygen...

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Hauptverfasser:	YASUKAWA RITSU, SASAKI MOTOI, SHIMIZU HIROMASU, KINDAICHI YOSHIAKI, SUGANUMA FUJIO, MYAMOTO KATSUMI, KAWATSUKI MASAAKI, NAKATSUJI TADAO
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL SEPARATION THEIR RELEVANT APPARATUS TRANSPORTING
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Beschreibung
Zusammenfassung:	PURPOSE:To efficiently reduce nitrogen oxides in exhaust gas by a catalyst obtained by supporting perovskite type composite oxide represented by a specific general formula on a solid acid carrier. CONSTITUTION:A catalyst for catalytically reducing nitrogen oxides using hydrocarborns and/or an oxygen-containing compound as a reducing agent is constituted by supporting perovskite type composite oxide represented by formula (wherein A is at least one kind of an element selected from La, Y, Ce or the like, B is at least one kind of an element selected from Ba, Sr, Ca or the like, C is at least one kind of an element selected from Mn, Co, Fe or the like and (x) is O