| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c5d35cbcd18261ca6afc76a9f64ae2a1 |
| classificationCPCAdditional |
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/B01J23-002
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J23-22
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-215 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J23-22
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J27-198
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-215 |
| filingDate |
1988-10-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1991-05-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_380218277d18c85d83197ab673b09b22
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2258c37e8d5154974b842869e707b452 |
| publicationDate |
1991-05-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-5019545-A |
| titleOfInvention |
Process for manufacture of maleic anhydride catalysts |
| abstract |
Novel maleic anhydride catalysts comprising phosphorus-vanadium oxides and phosphorus-vanadium-co-metal oxides wherein said catalysts do not expand under reaction conditions for the manufacture of maleic anhydride and a process for preparing these catalysts are disclosed. The process comprises reacting a vanadium compound with a phosphoryl halide in the presence of water in an atmosphere comprising at least about 0.1% oxygen wherein the molar ratio of water to phosphorus from the phosphoryl halide is in the range of about 2.25:1 to about 3.75:1. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5274539-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7638457-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5945368-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2006173197-A1 |
| priorityDate |
1988-07-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |