Catalyst for purifying exhaust gases and a method for producing the catalyst

Patent · Tue Jan 04 04:00:00 EST 1983

OSTI ID:6387154

Fujitani, Y; Kondoh, S; Muraki, H; Nakamura, T; Sobukawa, H; Tomita, M; Yokota, K

A catalyst for reducing nitrogen oxides, carbon monoxide and hydrocarbons, the noxious components in exhaust gases from internal combustion engines, etc., which comprises: a carrier having a substructure of refractory material in the form of a honeycomb structure, etc., and a porous layer of a powder formed on the surface thereof selected from the group consisting of a powder of zirconium oxide and a mixed powder of zirconium oxide powder with at least one powder selected from the group consisting of alumina, alumina-magnesia spinel and cerium oxide; and a catalyst ingredient supported thereon consisting of cerium oxide and a metal selected from the group consisting of platinum, palladium and mixtures thereof.

• Assignee: Toyota Chuo Kenkyusho K K (Japan)
• Patent Number(s): US 4367162
• OSTI ID: 6387154
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
330700 -- Advanced Propulsion Systems-- Emission Control
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CATALYST SUPPORTS
CATALYSTS
CERIUM COMPOUNDS
CERIUM OXIDES
CHALCOGENIDES
ELEMENTS
ENGINES
EQUIPMENT
EXHAUST GASES
FABRICATION
FLUIDS
GASEOUS WASTES
GASES
HEAT ENGINES
HONEYCOMB STRUCTURES
HYDROCARBONS
INTERNAL COMBUSTION ENGINES
MECHANICAL STRUCTURES
METALS
NITROGEN COMPOUNDS
NITROGEN OXIDES
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PLATINUM METALS
POLLUTION CONTROL EQUIPMENT
PURIFICATION
RARE EARTH COMPOUNDS
REFRACTORIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
WASTES
ZIRCONIUM COMPOUNDS
ZIRCONIUM OXIDES