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1. (WO2019065659) EXHAUST GAS PURIFICATION CATALYST
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Pub. No.: WO/2019/065659 International Application No.: PCT/JP2018/035529
Publication Date: 04.04.2019 International Filing Date: 25.09.2018
IPC:
B01J 23/63 (2006.01) ,B01D 53/94 (2006.01) ,F01N 3/10 (2006.01)
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
63
with rare earths or actinides
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
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01
MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
N
GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
3
Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
08
for rendering innocuous
10
by thermal or catalytic conversion of noxious components of exhaust
Applicants:
JOHNSON MATTHEY JAPAN G.K. [JP/JP]; 5123-3 Kitsuregawa, Sakura-shi, Tochigi 3291412, JP
Inventors:
NAGAOKA Shuhei; JP
SUMIYA Satoshi; JP
HIROTA Tomotaka; JP
KURASHIMA Yasunori; JP
OHTSUKA Yukie; JP
SUZUKI Takayuki; JP
YAMADA Takashi; JP
Agent:
SONODA & KOBAYASHI INTELLECTUAL PROPERTY LAW; 34th Floor, Shinjuku Mitsui Building, 1-1, Nishi-Shinjuku 2-chome, Shinjuku-ku, Tokyo 1630434, JP
Priority Data:
2017-18429026.09.2017JP
Title (EN) EXHAUST GAS PURIFICATION CATALYST
(FR) CATALYSEUR DE PURIFICATION DE GAZ D’ÉCHAPPEMENT
Abstract:
(EN) A three-way catalyst article, and its use in an exhaust system for internal combustion engines, is disclosed. The catalyst article for treating exhaust gas comprises: a substrate; and a catalytic region on the substrate; wherein the catalytic region comprises a platinum group metal (PGM) component, an oxide, and a rare earth metal component; wherein the oxide is an inorganic oxide, an oxygen storage component (OSC) material, or a mixture thereof; wherein the rare earth metal component concentration by element on the surface of the oxide per unit specific surface area of the oxide is 1 μmol/m2 to 20 μmol/m2.
(FR) La présente invention concerne un article catalytique à trois voies et son utilisation dans un système d'échappement pour moteurs à combustion interne. L'article catalytique pour le traitement de gaz d'échappement comprend : un substrat ainsi qu'une région catalytique sur le substrat; la région catalytique comprenant un composant de métal du groupe du platine (ÉGP), un oxyde et un composant de métal du groupe des terres rares, l'oxyde étant un oxyde inorganique, un composant de stockage d'oxygène (CSO) ou un mélange de ceux-ci; la concentration de composant de métal du groupe des terres rares par élément sur la surface de l'oxyde par unité de surface spécifique de l'oxyde est de 1 μmol/m2 à 20 μmol/m2.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)