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1. (WO1998051401) GOLD BASED CATALYST FOR EXHAUST GAS PURIFICATION
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1998/051401 International Application No.: PCT/BG1998/000010
Publication Date: 19.11.1998 International Filing Date: 15.05.1998
Chapter 2 Demand Filed: 11.12.1998
IPC:
B01D 53/86 (2006.01) ,B01D 53/94 (2006.01) ,B01J 23/52 (2006.01) ,B01J 23/66 (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
74
General processes for purification of waste gases; Apparatus or devices specially adapted therefor
86
Catalytic processes
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
48
Silver or gold
52
Gold
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
66
Silver or gold
Applicants:
LAMAN CONSULTANCY LIMITED [BG/BG]; Veliko Tarnovo Street, 24 Sofia, BG (AllExceptUS)
PETROV, Lachezar Angelov [BG/BG]; BG (UsOnly)
Inventors:
PETROV, Lachezar Angelov; BG
Agent:
VARBANOV, Julian Ivanov; Patent and Trademark Bureau 2nd floor Pozitano Street, 3 Sofia, BG
Priority Data:
10149015.05.1997BG
Title (EN) GOLD BASED CATALYST FOR EXHAUST GAS PURIFICATION
(FR) CATALYSEUR A BASE D'OR POUR LA PURIFICATION DE GAZ D'ECHAPPEMENT
Abstract:
(EN) The invention relates to a gold catalyst for oxidation of carbon monoxide and hydrocarbons, reduction of nitrous oxides and degradation of ozone, for use in the protection of the environment. The active component of the catalyst consists of complex of gold and reducible oxide from the group of the transition metals. The concentration of gold in the catalyst is from 0.1 % to 2.5 % and the total concentration of the metals in the active component of the catalyst is from 0.1 % to 10 % of the total mass. The support consists of oxides of ceria and titanium. The surface of the catalyst is between 80 m2/g and 400 m2/g and the catalyst working temperature is from 0 °C to 400 °C.
(FR) L'invention concerne un catalyseur à base d'or destiné à l'oxydation du monoxyde de carbone et d'hydrocarbures, la réduction d'oxyde azoté et de la dégradation de l'ozone, destiné à être utilisé dans la protection de l'environnement. Le composant actif du catalyseur se compose d'un complexe d'or et d'un oxyde réductible tiré du groupe des métaux de transition. La concentration de l'or dans le catalyseur est comprise entre 0,1 % et 2,5 % et la concentration totale des métaux dans le composant actif du catalyseur se situe entre 0,1 % et 10 % de la masse totale. Le support se compose d'oxyde cérique et d'oxyde de titane. La surface du catalyseur est comprise entre 80 m2/g et 400 m2/g et la température de travail du catalyseur est comprise entre 0 °C et 400 °C.
Designated States: AU, CA, JP, US
European Patent Office (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
EP0981402JP2001524030 AU1998072013