Automobile exhaust gas purifying combustion catalysts

The present invention provides combustion catalysts that have high exhaust gas-purifying activity and are less expensive than conventional ones. The catalysts include: (1) A calcium salt, amorphous silica, and a copper compound, (2) Amorphous silica, and a copper compound, (3) (1) At least one of cr...

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Bibliographische Detailangaben
Hauptverfasser: TSUGE KENICHI, ISHIDA MASAO, SHIBAHARA KAZUO, KOGA MIYAKO, MASATANI TADAHISA
Format: Patent
Sprache:eng
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Zusammenfassung:The present invention provides combustion catalysts that have high exhaust gas-purifying activity and are less expensive than conventional ones. The catalysts include: (1) A calcium salt, amorphous silica, and a copper compound, (2) Amorphous silica, and a copper compound, (3) (1) At least one of crystalline silica and amorphous silica, (2) a calcium salt, and (3) a copper oxide, and (4) (1) At least one of crystalline silica and amorphous silica, and (2) a copper oxide.