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1. WO2012059144 - METHOD FOR THE PREPARATION OF A CATALYSED PARTICULATE FILTER AND CATALYSED PARTICULATE FILTER

Publication Number WO/2012/059144
Publication Date 10.05.2012
International Application No. PCT/EP2011/003257
International Filing Date 01.07.2011
IPC
B01J 23/44 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
23Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/113
38of noble metals
40of the platinum group metals
44Palladium
B01J 29/76 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
29Catalysts comprising molecular sieves
04having base-exchange properties, e.g. crystalline zeolites, pillared clays
06Crystalline aluminosilicate zeolites; Isomorphous compounds thereof
70of types characterised by their specific structure not provided for in groups B01J29/08-B01J29/65130
72containing iron group metals, noble metals or copper
76Iron group metals or copper
B01J 29/85 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
29Catalysts comprising molecular sieves
82Phosphates
84Aluminophosphates containing other elements, e.g. metals, boron
85Silicoaluminophosphates (SAPO compounds)
B01J 35/02 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
35Catalysts, in general, characterised by their form or physical properties
02Solids
B01J 37/025 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
37Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
02Impregnation, coating or precipitation
025using a distinct intermediate layer, e.g. substrate-support-active layer
B01D 53/94 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
53Separation 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
34Chemical or biological purification of waste gases
92of engine exhaust gases
94by catalytic processes
CPC
B01D 2255/1021
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
2255Catalysts
10Noble metals or compounds thereof
102Platinum group metals
1021Platinum
B01D 2255/1023
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
2255Catalysts
10Noble metals or compounds thereof
102Platinum group metals
1023Palladium
B01D 2255/2065
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
2255Catalysts
20Metals or compounds thereof
206Rare earth metals
2065Cerium
B01D 2255/20707
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
2255Catalysts
20Metals or compounds thereof
207Transition metals
20707Titanium
B01D 2255/20715
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
2255Catalysts
20Metals or compounds thereof
207Transition metals
20715Zirconium
B01D 2255/20761
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
2255Catalysts
20Metals or compounds thereof
207Transition metals
20761Copper
Applicants
  • HALDOR TOPSØE A/S [DK]/[DK] (AllExceptUS)
  • JOHANSEN, Keld [DK]/[DK] (UsOnly)
Inventors
  • JOHANSEN, Keld
Agents
  • HALDOR TOPSOE A/S
Priority Data
PA20100099102.11.2010DK
PA20100111009.12.2010DK
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) METHOD FOR THE PREPARATION OF A CATALYSED PARTICULATE FILTER AND CATALYSED PARTICULATE FILTER
(FR) FILTRE À PARTICULES CATALYSÉ ET SON PROCÉDÉ DE PRÉPARATION
Abstract
(EN)
The invention pertains to a catalysed particulate filter provided in its entire dispersion side and within its partition walls with a first catalyst being active in selective catalytic reduction of nitrogen oxides, and in its entire permeate side with a second catalyst combination with a catalyst being active in oxidation of ammonia mixed with a catalyst being active in oxidation of carbon monoxide and hydrocarbons and a method for its preparation. The mean particle size of the first catalyst is smaller than the mean pore diameter of the longitudinal porous walls, and the mean particle size of the second catalyst combination is larger than the mean pore diameter of the longitudinal walls. In the example, the first catalyst is a silica aluminium phosphate SAPO-34 promoted with 2% copper and the second catalyst is a mixture of platinum and palladium (molar ratio 3:1) supported on alumina particles and beta zeolite powder with 1.0% copper.
(FR)
La présente invention concerne un filtre à particules catalysé muni, sur la totalité de son côté dispersion et dans ses parois de séparation, d'un premier catalyseur, actif dans la réduction catalytique sélective d'oxydes d'azote, et, sur l'intégralité de son côté perméat, d'une seconde combinaison de catalyseur, un catalyseur étant actif lors de l'oxydation d'ammoniac mélangé à un catalyseur actif dans l'oxydation du monoxyde de carbone et d'hydrocarbures, ainsi qu'un procédé destiné à sa préparation. La taille moyenne des particules du premier catalyseur est inférieure au diamètre de pore moyen des parois poreuses longitudinales et la taille moyenne des particules de la seconde combinaison de catalyseur est supérieure au diamètre moyen des pores des parois longitudinales. Dans l'exemple, le premier catalyseur est un phosphate d'aluminium de silice SAPO-34, stimulé avec 2 % de cuivre, et le second catalyseur est un mélange de platine et de palladium (rapport molaire de 3:1) supporté sur des particules d'alumine et une poudre de béta-zéolithe avec 1 % de cuivre.
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