http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-111454201-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-48 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J19-26 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D213-74 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J31-0244 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D213-74 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-48 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J31-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J19-26 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C57-07 |
| filingDate | 2020-04-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2022-01-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2022-01-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-111454201-B |
| titleOfInvention | Novel method for preparing efficient acylation catalyst material |
| abstract | The invention discloses a new method for preparing high-efficiency acylation catalyst material, which comprises the steps of in an external circulation spray type reactor, deoxidizing, charging nitrogen, replacing and protecting, then sequentially adding acrylic acid and 4-cyanopyridine raw materials, starting an external circulation pump at 70-110 ℃ to carry out high-speed circulation spraying, controlling the temperature at 70-110 ℃, slowly adding a hydrogen chloride raw material into an external circulation spraying type reactor through a gas raw material inlet, the invention adopts a unique external circulation spray type reactor to replace the traditional stirred tank type reactor by mixing with liquid drops from a nozzle and realizing the steps of full mass transfer and reaction among materials, the recovery rate of acrylic acid is more than 95 percent, the yield of 4-dimethylamino pyridine calculated by 4-cyanopyridine is more than 98 percent, and the content of 4-dimethylamino pyridine is more than 99 percent. |
| priorityDate | 2020-04-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 66.