| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_8e0bf0928b608797b70bbc2b91c7e52e |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-252
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C57-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C47-22
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J23-8876
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C45-35 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-25
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-16
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J23-887
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-35
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-42 |
| filingDate |
2014-11-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2015-10-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_bfe144407b7fd060affe016da5c62ccf
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_98208e0ffa042265dd62a97625b47a9f
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_99b6f5a2e2b60f4e92afcb18a00aaf94
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c23c03b00cca14e2d2a13ed2b65c9c65
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_00d068a1c7ec60f8f2adaba8866ca693 |
| publicationDate |
2015-10-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-9169188-B2 |
| titleOfInvention |
Process for preparing an unsaturated aldehyde and/or an unsaturated carboxylic acid |
| abstract |
An α,β-unsaturated aldehyde and/or an α,β-unsaturated carboxylic acid are prepared by gas phase oxidation of alkene with molecular oxygen over a fixed catalyst bed comprising a bed of hollow cylindrical shaped catalyst bodies having a multimetal oxide active composition. The fixed catalyst bed comprises at least three successive reaction zones; the highest local temperature in the fixed catalyst bed does not occur in the reaction zone closest to the reactor outlet; the highest local temperature in the fixed catalyst bed does not occur in the reaction zone closest to the reactor inlet; and the value WT=(ED−ID)/2 in the reaction zone in which the highest local temperature in the fixed catalyst bed occurs is lower than in the other reaction zones, in which ED is the external diameter and ID is the internal diameter of the shaped catalyst body. The yield of the products of value is enhanced in this way. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10307741-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10710054-B2 |
| priorityDate |
2013-11-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |