CATALYST FOR PURIFICATION OF EXHAUST GAS

PURPOSE:To obtain a catalyst for purification of exhaust gas enabling satisfactory removal of NOx over a wide temp. range even in an atmosphere contg. oxygen in excess. CONSTITUTION:A zeolite catalyst carrying Co by 1.5-5.0wt.% of the amt. of zeolite is put on the inflow side of exhaust gas and a ze...

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Bibliographic Details
Main Authors KASAHARA KOICHI, MATSUMOTO SHINICHI, ISHIBASHI KAZUNOBU, SEKIZAWA KAZUHIKO, UCHIUMI TAKAHIDE, KASAHARA SENJI
Format Patent
LanguageEnglish
Published 11.09.1992
Subjects
BLASTING
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
HEATING
LIGHTING
MACHINES OR ENGINES IN GENERAL
MECHANICAL ENGINEERING
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
SEPARATION
STEAM ENGINES
THEIR RELEVANT APPARATUS
TRANSPORTING
WEAPONS
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Summary:PURPOSE:To obtain a catalyst for purification of exhaust gas enabling satisfactory removal of NOx over a wide temp. range even in an atmosphere contg. oxygen in excess. CONSTITUTION:A zeolite catalyst carrying Co by 1.5-5.0wt.% of the amt. of zeolite is put on the inflow side of exhaust gas and a zeolite catalyst carrying Pt, Pd, Rh, Ir and/or Ru is put on the outflow side to obtain a catalyst for purification of exhaust gas.
Bibliography:Application Number: JP19910015334