CATALYST FOR SELECTIVE REDUCTION NITROGEN OXIDE BY CARBON MONOXIDE AND ITS PREPARING METHOD

PROBLEM TO BE SOLVED: To provide a catalyst reducing and detoxifying nitrogen oxides in combustion exhaust gas where oxygen remains and the concentration of SO2is extremely low by using carbon monoxide as a reducing agent. SOLUTION: The catalyst keeps iridium carried by a carrier by combining tungst...

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Hauptverfasser:	OI AKIHIKO, NAKAYAMA NORIO, KOBUCHI TAMOTSU, NANBA TETSUYA, UCHISAWA JIYUNKO
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL SEPARATION TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE THEIR RELEVANT APPARATUS TRANSPORTING
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a catalyst reducing and detoxifying nitrogen oxides in combustion exhaust gas where oxygen remains and the concentration of SO2is extremely low by using carbon monoxide as a reducing agent. SOLUTION: The catalyst keeps iridium carried by a carrier by combining tungsten oxide and silica. Preferably, the catalyst for reduction selectively reduces the nitrogen oxides by the carbon monoxide prepared through reducing a catalyst for reduction in hydrogen. COPYRIGHT: (C)2007,JPO&INPIT