| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_cebc9740ef706cde29e885504f274ffa |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J2523-00 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J23-002
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J27-199
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J27-19
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-252 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-25
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-235
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J27-199
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J27-19
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B61-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C57-055 |
| filingDate |
2000-12-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_93a1b60a3487d6ebccc9ffb6ae6e81ca
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_48b250283aa1614e00290b280aff7d9c |
| publicationDate |
2002-07-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
JP-2002193871-A |
| titleOfInvention |
Method for producing methacrylic acid |
| abstract |
(57) [Problem] To provide a novel method for producing methacrylic acid, which effectively suppresses catalyst deterioration by controlling reaction conditions. SOLUTION: The method for producing methacrylic acid of the present invention circulates a raw material gas containing methacrolein, oxygen and water vapor through a reactor filled with a catalyst mainly composed of a composite oxide containing molybdenum and phosphorus. Wherein the concentration of methacrolein in the raw material gas is 4 to 6.5% by volume, the molar ratio of water vapor to methacrolein in the raw material gas is 1 to 2, The space velocity of the raw material gas with respect to the packed bed is 500 to 750 h −1 . |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-101534355-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2009502927-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2008143052-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2009502926-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-5340732-B2 |
| priorityDate |
2000-12-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |