http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CA-2027323-C
Outgoing Links
| Predicate | Object |
|---|---|
| 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/B01J27-186 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-252 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J27-199 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J23-885 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C57-04 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J23-885 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C57-055 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J35-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B61-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J27-199 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-25 |
| filingDate | 1990-10-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1999-07-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d40cf5f71e2fce9f305289c2570a3841 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e2316095aff1e8904130a5d072a3b8be http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6a0d7dd68d70616102916fdfb8f862fe |
| publicationDate | 1999-07-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CA-2027323-C |
| titleOfInvention | Process for preparing catalysts for producing methacrylic acid |
| abstract | In a process for producing a catalyst having a composition represented by the following formula usable to produce methacrylic acid by the gas-phase catalytic oxidation of methacrolein with molecular oxygen, P a Mo b Cu c V d X e Y f Z g O h wherein P, Mo, Cu, V and O are phosphorus, molybdenum, copper, vanadium and oxygen, respectively, X is at least one element selected from the group consisting of arsenic, antimony, bismuth, germanium, zirconium, tellurium and silver, Y is at least one element selected from the group consisting of iron, zinc, chromium, magnesium, tantalum, manganese, barium, boron, gallium, cerium and lanthanum, Z is at least one element selected from the group consisting of potassium, rubidium, cesium and thallium, a, b, c, d, e, f, g and h are an atomic ratio of each element, and when b is 12, a is 0.5 to 3, c is 0.01 to 2, d is 0.01 to 3, e is 0.01 to 3, f is 0 to 3, g is 0.01 to 2 and h is the number of oxygen atoms necessary to satisfy the valence of each component, an improvement comprising adding 0.05 to 1.0 mole of nitric acid based on 12 moles of a molybdenum atom to a slurry containing materials for the catalyst components. According to the present invention, a catalyst for gas-phase catalytic oxidation excellent in the conversion of methacrolein and selectivity for methacrylic acid is obtained. |
| priorityDate | 1989-10-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 97.