http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CA-2231536-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_0efa077d881a96aeb1e29b21ef1bbb58 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P20-584 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J37-16 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J23-96 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J23-42 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01B21-1418 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J38-48 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J23-96 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J23-42 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01B21-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J37-16 |
| filingDate | 1996-09-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_415c8f0663d8fb127e0b6ee35d75d59b http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_995773b91ab63d93617561a4ae5a7420 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6d5c260b21d7fe3482a31598455d84a7 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b7671bb5126c0e48e33f91af20aeb6ff http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c5e87ba40b9033e2515d4eec0aa4c438 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f7ef59bc32b1b14fa9d0b2f10447b3cd http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ae1b9b845973b9465c47442fad5f0ffb |
| publicationDate | 1997-04-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CA-2231536-A1 |
| titleOfInvention | Preparation of a hydrogenation catalyst |
| abstract | The invention relates to a hydrogenation catalyst by the reduction from platinum in the stage of oxidation of +4 (Pt (IV)) with a selective reducing agent in an acidic aqueous medium in the presence of a carbon-containing carrier to platinum in the stage of oxidation +2 (Pt (II)), subsequent poisoning of the platinum thus obtained with a sulphur-containing selective reducing agent, and subsequent reduction of the platinum thus partially poisoned to form metallic platinum (Pt(0)) and subsequent processing as known per se in that (a) Pt (II) is partially poisoned with a sulphur-containing selective reducing agent, wherein the sulphur-containing selective reduction agent is used in an amount which corresponds to from 15 to 70 mol % of the amount of the sulphur-containing selective reducing agent which might be needed to reduce Pt(IV) to Pt (II), provided that the amount of Pt (IV) corresponds to the amount of Pt (II) used and to be poisoned, and subsequently the partially poisoned Pt (II) is reduced with an alkali metal formate to Pt (0); or (b) platinum in the stage of oxidation of greater than +2 is partially poisoned and subsequently or simultaneously reduced with an alkali metal formate to Pt (0). The invention also relates to a hydrogenation catalyst, use of the hydrogenation catalyst for preparing hydroxylammonium salts, a process for the preparation of hydroxylammonium salts, and a process for regenerating platinum-containing hydrogenation catalysts. |
| priorityDate | 1995-10-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 67.