MX9802151A - Preparacion de un catalizador para hidrogenacion. - Google Patents
Preparacion de un catalizador para hidrogenacion.Info
- Publication number
- MX9802151A MX9802151A MX9802151A MX9802151A MX9802151A MX 9802151 A MX9802151 A MX 9802151A MX 9802151 A MX9802151 A MX 9802151A MX 9802151 A MX9802151 A MX 9802151A MX 9802151 A MX9802151 A MX 9802151A
- Authority
- MX
- Mexico
- Prior art keywords
- platinum
- sulphur
- hydrogenation catalyst
- reducing agent
- amount
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
- B01J23/40—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals of the platinum group metals
- B01J23/42—Platinum
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/90—Regeneration or reactivation
- B01J23/96—Regeneration or reactivation of catalysts comprising metals, oxides or hydroxides of the noble metals
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/16—Reducing
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B21/00—Nitrogen; Compounds thereof
- C01B21/082—Compounds containing nitrogen and non-metals and optionally metals
- C01B21/14—Hydroxylamine; Salts thereof
- C01B21/1409—Preparation
- C01B21/1418—Preparation by catalytic reduction of nitrogen oxides or nitrates with hydrogen
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/584—Recycling of catalysts
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Inorganic Chemistry (AREA)
- Catalysts (AREA)
Abstract
La presente invencion se refiere a la preparacion de un catalizador de hidrogenacion reduciendo platino en el estado de oxidacion +4 (PL (IV)), con un agente reductor selectivo en un medio acuoso ácido en presencia de un portador que contenga carbono, a platino en el estado de oxidacion +2 (PL (II)), después el envenenamiento del platino resultante con un agente reductor selectivo que contenga azufre y luego reduciendo el platino parcialmente envenenado en esta forma a platino metálico (PL (O)) y después el tratamiento en una forma conocida per se, en donde (a) el (PL (II)) es parcialmente envenenado con un agente reductor selectivo que contiene azufre, el agente reductor se utiliza en una cantidad que corresponde a 15-70% mol de la cantidad de un agente reductor selectivo que contiene azufre, que sería necesario para reducir Pt (IV)) a Pt (II), siempre y cuando la cantidad de Pt (IV) corresponda a la cantidad de Pt (II) utilizado y que se va a envenenar, y el Pt (II) parcialmente envenenado entonces se reduce con un formato de metal alcalino en Pt (0), o (b) El platino en un estado de oxidacion superior a +2 es parcialmente envenenado y se reduce posteriormente o en forma simultánea por medio de un formato de metal alcalino a Pt (0), y el catalizador de hidrogenacion, el uso del catalizador de hidrogenacion para la preparacion de sales de hidroxilamonio, los procesos para la preparacion de las sales de hidroxilamonio y un proceso para regenerar los catalizadores de hidrogenacion que contienen platino.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19536777A DE19536777C1 (de) | 1995-10-04 | 1995-10-04 | Verfahren zur Herstellung eines Hydrierungskatalysators und seine Verwendung |
| DE19536777.4 | 1995-10-04 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| MX9802151A true MX9802151A (es) | 1998-08-30 |
| MXPA98002151A MXPA98002151A (es) | 1998-11-12 |
Family
ID=
Also Published As
| Publication number | Publication date |
|---|---|
| WO1997012673A1 (de) | 1997-04-10 |
| CA2231536A1 (en) | 1997-04-10 |
| DE19536777C1 (de) | 1997-05-15 |
| CN1198686A (zh) | 1998-11-11 |
| EP0862494A1 (de) | 1998-09-09 |
| JPH11513302A (ja) | 1999-11-16 |
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