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1. (WO2018225036) CATALYTIC WASHCOAT WITH CONTROLLED POROSITY FOR NOX ABATEMENT
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Pub. No.: WO/2018/225036 International Application No.: PCT/IB2018/054171
Publication Date: 13.12.2018 International Filing Date: 08.06.2018
IPC:
B01J 29/72 (2006.01) ,B01J 35/10 (2006.01) ,F01N 3/20 (2006.01) ,B01D 53/94 (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
29
Catalysts comprising molecular sieves
04
having base-exchange properties, e.g. crystalline zeolites, pillared clays
06
Crystalline aluminosilicate zeolites; Isomorphous compounds thereof
70
of types characterised by their specific structure not provided for in groups B01J29/08-B01J29/65130
72
containing iron group metals, noble metals or copper
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
35
Catalysts, in general, characterised by their form or physical properties
02
Solids
10
characterised by their surface properties or porosity
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
18
characterised by methods of operation; Regulation
20
specially adapted for catalytic conversion
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
Applicants:
BASF CORPORATION [US/US]; 100 Park Avenue Florham Park, New Jersey 07932, US
Inventors:
PETROVIC, Ivan; US
MOHANAN, Jaya L.; US
PETENKO, Joseph J.; US
Agent:
GORCZYNSKI, Jessica; US
Priority Data:
62/517,24309.06.2017US
Title (EN) CATALYTIC WASHCOAT WITH CONTROLLED POROSITY FOR NOX ABATEMENT
(FR) COUCHE D'IMPRÉGNATION CATALYTIQUE À POROSITÉ CONTRÔLÉE POUR RÉDUCTION DE NOX
Abstract:
(EN) The present disclosure recognizes a correlation between zeolitic surface area (ZSA) of a catalyst composition and its catalytic activity. Particularly, the disclosure provides catalyst articles for diesel NOx abatement, including a substrate and a washcoat layer containing metal-promoted molecular sieves, wherein the zeolitic surface area (ZSA) of the catalyst article is about 100 m2/g or greater, the volumetric surface area is about 900 m2/in3 or greater, and/or the total zeolitic surface area (tZSA) is about 1200 m2 or greater. The disclosure further relates to methods for evaluating ZSA, volumetric ZSA, and tZSA, e.g., including the steps of coating a catalyst composition comprising metal-promoted molecular sieves onto a substrate; calcining and aging the catalyst composition; determining the ZSA (or volumetric ZSA or tZSA) thereof; and correlating the ZSA (or volumetric ZSA or tZSA) with catalyst composition NOx abatement activity to determine whether the catalyst composition is suitable for an intended use.
(FR) La présente invention reconnaît une corrélation entre la surface zéolithique (ZSA) d'une composition de catalyseur et son activité catalytique. En particulier, l'invention concerne des articles de catalyseur pour la réduction de NOx diesel, comprenant un substrat et une couche d'imprégnation contenant des tamis moléculaires activés par un métal, la surface zéolithique (ZSA) de l'article de catalyseur est d'environ 100 m2/g ou plus, la surface volumétrique est d'environ 900 m2/in3 ou plus, et/ou la surface zéolithique totale (tZSA) est d'environ 1200 m2 ou plus. L'invention concerne en outre des procédés d'évaluation de ZSA, de ZSA volumétrique et de tZSA, par exemple, comprenant les étapes consistant à l'enrobage d'une composition de catalyseur comprenant des tamis moléculaires activés par un métal sur un substrat; la calcination et le vieillissement de la composition de catalyseur; la détermination de la ZSA (ou de ZSA ou tZSA volumétrique) de celle-ci; et la corrélation de la ZSA (ou de ZSA ou tZSA) avec activité de réduction de NOx de la composition de catalyseur pour déterminer si la composition de catalyseur est appropriée pour une utilisation prévue.
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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)