CATALYST AND METHOD FOR CLEANING NOx-CONTAINING EXHAUST GAS

CATALYST AND METHOD FOR CLEANING NOx-CONTAINING EXHAUST GAS

PROBLEM TO BE SOLVED: To obtain an improved silver carrying alumina catalyst for cleaning NOx-containing gas and an NOx-containing exhaust gas cleaning method using this catalyst. SOLUTION: A silver carrying alumina catalyst for cleaning NOx-containing exhaust gas is characterized by that SiO2 in al...

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Bibliographische Detailangaben
Hauptverfasser: YAMASEKI KENICHI, SATOKAWA SHIGEO, HOSHI FUMIYUKI, UCHIDA HIROSHI
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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Zusammenfassung:PROBLEM TO BE SOLVED: To obtain an improved silver carrying alumina catalyst for cleaning NOx-containing gas and an NOx-containing exhaust gas cleaning method using this catalyst. SOLUTION: A silver carrying alumina catalyst for cleaning NOx-containing exhaust gas is characterized by that SiO2 in alumina is 180 ppm or less, Na2O is 100 ppm or less and chlorine is 50 ppm or less and NOx-containing exhaust gas is brought into contact with this catalyst to be cleaned.