| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_8e0bf0928b608797b70bbc2b91c7e52e |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J35-026
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J35-023
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J35-1014
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J37-0223
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J37-0219
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/B01J23-22
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J23-18
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J35-1004
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J23-002
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J37-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J37-0236
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J37-0219
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J37-0221
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D307-89
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J35-0006
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-265
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J21-063
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-313 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J35-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J35-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-265
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J23-18
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J23-22
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J21-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C63-16 |
| filingDate |
2016-01-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d45f768d2663c5c5828c9bae439636dd
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4faecb7b64e7f16b41aa12b4d2af2728
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_92e45b67963fa0e2ed114e9b3bfecc2f
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_00d068a1c7ec60f8f2adaba8866ca693 |
| publicationDate |
2017-11-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
EP-3247492-A1 |
| titleOfInvention |
Multi-zoned catalyst system for oxidation of o-xylene and/or naphthalene to phthalic anhydride |
| abstract |
The present invention relates to a catalyst system for oxidation of o-xylene and/or naphthalene to phthalic anhydride (PA) comprising at least four catalyst zones arranged in succession in the reaction tube and filled with catalysts of different chemical composition wherein the active material of the catalysts comprise vanadium and titanium dioxide and the active material of the catalyst in the last catalyst zone towards the reactor outlet has an antimony content (calculated as antimony trioxide) between 0.7 to 3.0 wt.%. The present invention further relates to a process for gas phase oxidation in which a gas stream comprising at least one hydrocarbon and molecular oxygen is passed through a catalyst system which comprises at least four catalyst zones arranged in succession in the reaction tube and filled with catalysts of different chemical composition wherein the active materials of the catalysts comprise vanadium and titanium dioxide and the active material of the catalyst in the last catalyst zone towards the reactor outlet has an antimony content (calculated as antimony trioxide) between 0.7 to 3.0 wt.%. |
| priorityDate |
2015-01-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |