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1. (WO1991008827) HIGH-TEMPERATURE THREE-WAY CATALYST
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1991/008827 International Application No.: PCT/US1990/007423
Publication Date: 27.06.1991 International Filing Date: 12.12.1990
Chapter 2 Demand Filed: 27.05.1991
IPC:
B01D 53/94 (2006.01) ,B01J 23/58 (2006.01)
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
D
SEPARATION
53
Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols
34
Chemical or biological purification of waste gases
92
of engine exhaust gases
94
by catalytic processes
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
J
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS, COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
23
Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/113
38
of noble metals
54
combined with metals, oxides or hydroxides provided for in groups B01J23/02-B01J23/36118
56
Platinum group metals
58
with alkali- or alkaline earth metals or beryllium
Applicants:
ALLIED-SIGNAL INC. [US/US]; Law Department (C.A. McNally) P.O. Box 2245R Morristown, NJ 07962-2245, US
Inventors:
WILLIAMSON, W., Burton; US
LINDEN, Douglas, Gene; US
SUMMERS, Jack, Curtis, II; US
Agent:
ROONEY, Gerard, P.; Allied-Signal Inc. Law Dept. (C.A. McNally) 101 Columbia Road P.O. Box 2245 Morristown, NJ 07962-2245, US
WELLS, Harold, N.; Allied-Signal Inc. Law Department (C.A. McNally) P.O. Box 2245 Morristown, NJ 07962, US
Priority Data:
450,63414.12.1989US
Title (EN) HIGH-TEMPERATURE THREE-WAY CATALYST
(FR) CATALYSEUR A HAUTES TEMPERATURES A TROIS VOIES
Abstract:
(EN) A three-way catalyst for use in treating automotive exhaust gases employs a delta alumina support which contains oxides of cerium plus barium and/or lanthanum, plus at least one Group VIII noble metal from the group consisting of platinum, palladium, rhodium, ruthenium and iridium.
(FR) Un catalyseur à trois voies utilisé dans le traitement de gaz d'échappement d'automobiles, utilise un support d'oxyde d'aluminium delta, lequel contient des oxydes de cérium, de barium et/ou de lanthane, ainsi qu'au moins un métal noble du groupe VIII, tiré du groupe composé de platine, de palladium, de rhodium, de ruthénium et d'iridium.
Designated States: CA, JP
European Patent Office (AT, BE, CH, DE, DK, ES, FR, GB, GR, IT, LU, NL, SE)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
EP0505462JPH05502405CA2069632