| Predicate |
Object |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J2523-00 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J37-0045
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J37-0009
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J35-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C57-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J27-199
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J37-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J23-28
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-252
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-235
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-573
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J37-10 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J23-28
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J37-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-573
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C57-04 |
| filingDate |
2012-05-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2018-12-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate |
2018-12-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
KR-101925641-B1 |
| titleOfInvention |
Method of producing catalyst used in the production of methacrylic acid and method of producing methacrylic acid |
| abstract |
The present invention relates to a process for producing a catalyst for the production of methacrylic acid comprising a heteropoly acid compound containing phosphorus and molybdenum, characterized in that the catalyst precursor is calcined at 360 to 410 캜 under a gas atmosphere containing 0.1% by volume or more and less than 2.0% A first firing step; A second firing step of further firing the fired product obtained in the first firing step at 420 to 500 DEG C under a non-oxidative gas atmosphere; And a step of cooling the fired product obtained in the second firing step so as to be 280 DEG C or lower in a non-oxidizing gas atmosphere. |
| priorityDate |
2011-05-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |