| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_0efa077d881a96aeb1e29b21ef1bbb58 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J35-1014
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J2523-00 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J27-198
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-215
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J35-002
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-252
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-25
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J37-031
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J37-0018
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J23-002 |
| classificationIPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J35-10 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-25
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-215
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J37-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J37-03
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J27-18
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J35-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J27-198
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J37-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J35-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B61-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D307-60 |
| filingDate |
2003-03-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2007-01-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_980a64d1effbd3b42f6831339efe6739
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1b069b31ddcefa7cbc8e6ea19af1845c
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9c66127444e2eec60167c7d0ae41daac
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_99b8ad0351b2114cc89b8bdf343285ab |
| publicationDate |
2007-01-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-7169732-B2 |
| titleOfInvention |
Catalyst-precursor for the production of maleic acid anhydride and method for the production thereof |
| abstract |
A process for preparing a vanadium, phosphorus, and oxygen catalyst precursor for preparing maleic anhydride by heterogeneously catalyzed gas-phase oxidation of a hydrocarbon having at least four carbon atoms, which comprisesn (a) reacting vanadium pentoxide with from 102 to 110% strength phosphoric acid in the presence of a primary or secondary, noncyclic or cyclic, unbranched or branched, saturated alcohol having from 3 to 6 carbon atoms in a temperature range from 80 to 160° C.; (b) isolating the precipitate formed; (c) setting an organic carbon content of ≦1.1% by weight in the isolated precipitate by heat treatment in a temperature range from 250 to 350° C., the heat-treated product, following the addition of 3.0% by weight of graphite, giving a powder X-ray diffraction diagram which in the 2θ region features a ratio of the height of the peak of any pyrophosphate phase present at 28.5° to the height of the peak due to the graphite at 26.6° of ≦0.1; and (d) shaping the heat-treated product obtained from step (c) into particles having an averaged diameter of at least 2 mm;n na catalyst precursor obtainable from this process; a process for preparing a catalyst from the catalyst precursor; a catalyst obtainable from that process; and also a process for preparing maleic anhydride over that catalyst. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2009061167-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2007270597-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11289700-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2010311574-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8298981-B2 |
| priorityDate |
2002-03-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |