| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_d669af06cb2abbcd6823699582a97002 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J35-1019
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2002-52
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2006-12
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2002-72
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J35-1038 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01G25-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01F7-34
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J37-0045
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J21-066
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01F7-00 |
| classificationIPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J35-10 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01F7-34
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01F7-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01B21-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01G25-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J21-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J37-00 |
| filingDate |
1989-01-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1991-07-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f1e1430860e72a0e08d68de95814bbed
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_86b44f204ce3a747c23ad69e9b8a4a84
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a450b9286254eab68bfefa09bc023869 |
| publicationDate |
1991-07-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-5032378-A |
| titleOfInvention |
Zirconium-doped pseudobehmite, process for its production and use thereof |
| abstract |
Zirconium-doped pseudoboehmite with the following properties: zirconium content of 0.5 to 10 mol % relative to Al water content of 20 to 35 weight percent total of the anionic impurities less than 0.5 weight percent. It is synthesized by a process wherein zirconium salt is added in calculated quantity to an aqueous aluminum sulfate solution, the resulting mixture is fed simultaneously with a sodium aluminate liquor into a water pool having a temperature of 50 DEG to 100 DEG C., thereby precipitating zirconium-doped alumina gel while a pH of 3.5 to 8 is maintained, the pH of the suspension is adjusted after addition of the aluminum sulfate solution to 8.5 to 10.5 by further addition of sodium aluminate liquor, the suspension is digested if necessary at the pH of 8.5 to 10.5 and the temperature of 50 DEG to 100 DEG C. for a period of up to 24 hours, the formed pseudoboehmite crystals are filtered off, the filter cake is redispersed with water and the suspension is sprayed-dried. By calcining at 700 DEG to 1100 DEG C., preferably at 850 DEG to 950 DEG C., the pseudoboehmite is further processed to zirconium-doped gamma-alumina suitable for automobile exhaust catalysts. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2002519297-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1200349-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-4747353-B2 |
| priorityDate |
1988-01-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |