CATALYST FOR PURIFYING EXHAUST GAS

PURPOSE:To provide a catalyst for purifying exhaust gas to reduce NOx in the atmosphere of excessive oxygen at a high elimination ratio. CONSTITUTION:An H-type zeolite catalyst is positioned at the inflow side of exhaust gas, while another type of zeolite catalyst comprising at least one sort of cat...

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Main Authors KASAHARA KOICHI, MATSUMOTO SHINICHI, ISHIBASHI KAZUNOBU, SEKIZAWA KAZUHIKO, UCHIUMI TAKAHIDE, KASAHARA SENJI
Format Patent
LanguageEnglish
Published 24.09.1992
Subjects
BLASTING
CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSEGASES [GHG]
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY
ENGINE PLANTS IN GENERAL
GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNALCOMBUSTION ENGINES
GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES ORENGINES IN GENERAL
GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC
GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS
HEATING
LIGHTING
MACHINES OR ENGINES IN GENERAL
MECHANICAL ENGINEERING
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
SEPARATION
STEAM ENGINES
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
WEAPONS
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Summary:PURPOSE:To provide a catalyst for purifying exhaust gas to reduce NOx in the atmosphere of excessive oxygen at a high elimination ratio. CONSTITUTION:An H-type zeolite catalyst is positioned at the inflow side of exhaust gas, while another type of zeolite catalyst comprising at least one sort of catalyst component selected from a group consisting of copper, cobalt, platinum, palladium, rhodium, iridium, and ruthenium is placed at the outflow side of the exhaust gas.
Bibliography:Application Number: JP19910077377