http://rdf.ncbi.nlm.nih.gov/pubchem/patent/RU-2421452-C2
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_b0812896929cd3be06ef14973e964d41 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J27-199 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J35-023 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J2523-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J37-0036 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J37-0203 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J37-28 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J31-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-215 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J31-0258 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D307-34 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J27-28 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J23-002 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J27-198 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J27-198 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J27-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J31-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-215 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D307-60 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J27-28 |
| filingDate | 2006-05-01^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2011-06-20^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1aa97c0d2d47f4e820f2f9f698993cea http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_604f42d83cee8bdfa02c51a66520ee64 |
| publicationDate | 2011-06-20^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | RU-2421452-C2 |
| titleOfInvention | Method of producing maleic anhydride and catalyst used therein (versions) |
| abstract | FIELD: chemistry. n SUBSTANCE: invention relates to a method of producing maleic anhydride in a fluidised bed by oxidising material which contains C 4 hydrocarbons with molecular oxygen or oxygen-containing gas in a reactor with a fluidised bed at reactor temperature 325-500°C in the presence of a catalyst capable of working in the fluidised bed, containing mixed oxides of vanadium and phosphorus, wherein the catalyst is prepared as follows: (a) preparation of a catalyst precursor containing mixed vanadium and phosphorus oxide; (b) packing the catalyst precursor; (c) crushing the catalyst precursor to particles whose average size is less than one micrometre in diametre; (d) moulding particles which are capable of working in the fluidised bed, with bulk density greater than or equal to 0.75 g/cm 3 from the packed crushed catalyst precursor; and (e) annealing said particles in boiling conditions, where output of the maleic anhydride is increased by adding a compensating catalyst into the reactor with the fluidised bed, wherein said compensating catalyst contains alkyl ether of orthophosphoric acid of formula (RO) 3 P=O, where R is hydrogen or C 1 -C 4 alkyl and at least one R is C 1 -C 4 alkyl, where the compensating catalyst is prepared by saturating the catalyst obtained according to steps (a) to (e) with alkyl ether of orthophosphoric aid. The invention also discloses a method of improving operation of the mixed vanadium-phosphorus oxide catalyst for producing maleic anhydride from butane in a fluidised bed. The invention also relates to a catalyst capable of working in the fluidised bed, for producing maleic acid by oxidising material which contains C 4 hydrocarbons. n EFFECT: invention ensures high output of the end product at low working temperatures. n 31 cl, 2 tbl, 2 ex |
| priorityDate | 2005-05-02^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
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