Some content of this application is unavailable at the moment.
If this situation persist, please contact us atFeedback&Contact
1. (WO2018219536) SINTERING RESISTANT ZEOLITE SUPPORTED METAL CATALYST FOR METHANE OXIDATION
Latest bibliographic data on file with the International Bureau    Submit observation

Pub. No.: WO/2018/219536 International Application No.: PCT/EP2018/059226
Publication Date: 06.12.2018 International Filing Date: 11.04.2018
IPC:
B01J 29/068 (2006.01) ,B01J 29/22 (2006.01) ,B01J 29/44 (2006.01) ,B01D 53/94 (2006.01) ,B01J 35/00 (2006.01) ,B01J 35/10 (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
29
Catalysts comprising molecular sieves
04
having base-exchange properties, e.g. crystalline zeolites, pillared clays
06
Crystalline aluminosilicate zeolites; Isomorphous compounds thereof
064
containing iron group metals, noble metals or copper
068
Noble metals
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
18
of the mordenite type
20
containing iron group metals, noble metals or copper
22
Noble metals
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
40
of the pentasil type, e.g. types ZSM-5, ZSM-8 or ZSM-11
42
containing iron group metals, noble metals or copper
44
Noble metals
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
35
Catalysts, in general, characterised by their form or physical properties
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
Applicants:
PAUL SCHERRER INSTITUT [CH/CH]; 5232 Villigen PSI, CH
Inventors:
PETROV, Andrey; CH
KRÖCHER, Oliver; CH
VAN BOKHOVEN, Jeroen A.; CH
Agent:
FISCHER, Michael; DE
Priority Data:
17174071.501.06.2017EP
Title (EN) SINTERING RESISTANT ZEOLITE SUPPORTED METAL CATALYST FOR METHANE OXIDATION
(FR) CATALYSEUR MÉTALLIQUE SUPPORTÉ PAR UNE ZÉOLITE RÉSISTANT AU FRITTAGE POUR L'OXYDATION DU MÉTHANE
Abstract:
(EN) It is the objective of the present invention to provide a method for preparing a sintering resistant zeolite supported metal catalyst for catalytic methane oxidation that does not degrade by particle sintering and zeolite framework dealumination. This objective is achieved according to the present invention by a method for producing a precious metal/metal cation zeolite catalyst, hereinafter referred to as PM/MC-zeolite catalyst, for selective catalytic methane oxidation, comprising the steps of: a) treating a parent zeolite under desilication conditions in order to form mesopores (hereinafter referred to as nanocages) resulting in a desilicated zeolite; b) treating the desilicated zeolite in order to selectively extract extra-framework aluminum and surface framework aluminum, respectively, resulting in an acidic H-zeolite; c) loading the acidic H-zeolite with a precious metal compound by ion-exchange, impregnation or other technique and subsequent calcination resulting in an acidic PM/H-zeolite; d) optionally, neutralizing the strong acid sites of the PM/H-zeolite by a basic alkali metal salt or a base, and thus stabilize the precious metal within the nanocages of the zeolite. This method yields a hydrothermally stable sintering resistant methane oxidation catalyst. The invention also relates to a catalytic material wherein highly dispersed transition metal is stabilized within an intracrystalline secondary pore structure of a zeolitic support, wherein the zeolitic material is essentially free of extra-framework heteroatoms and heteroatoms on the external surface. Strong acidity may be balanced by an alkali metal cation.
(FR) L'objectif de la présente invention est de fournir un procédé de préparation d'un catalyseur métallique supporté par une zéolite résistant au frittage pour une oxydation catalytique du méthane qui ne se dégrade pas par frittage de particules et par désalumination de la structure de zéolite. Cet objectif est atteint dans la présente invention à l'aide d'un procédé de production d'un catalyseur zéolite à cation métallique/métal précieux, désigné ci-après comme catalyseur PM/MC-zéolite, pour l'oxydation catalytique sélective du méthane. Ce procédé comprend les étapes consistant: a) à traiter une zéolite mère dans des conditions de désilication afin de former des mésopores (appelés ci-après "nanocages") conduisant à une zéolite désilicatée; b) à traiter la zéolite désilicatée afin d'extraire sélectivement de l'aluminium extra-charpente et de l'aluminium de structure de surface, respectivement, ce qui permet d'obtenir une zéolite H acide; c) à charger la zéolite H acide avec un composé de métal précieux par échange d'ions, par imprégnation ou autre technique et par calcination ultérieure conduisant à une zéolite PM/H acide; d) éventuellement, à neutraliser les sites acides forts de la zéolite PM/H par un sel de métal alcalin basique ou une base, et à stabiliser ainsi le métal précieux à l'intérieur des nanocages de la zéolite. Ce procédé permet d'obtenir un catalyseur d'oxydation du méthane résistant au frittage thermiquement stable. L'invention concerne également un matériau catalytique dans lequel un métal de transition hautement dispersé est stabilisé à l'intérieur d'une structure de pores secondaires intracristallins d'un support zéolithique, le matériau zéolithique étant essentiellement exempt d'hétéroatomes extra-structurels et d'hétéroatomes sur la surface externe. Une forte acidité peut être équilibrée par un cation de métal alcalin.
front page image
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)