http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-107056688-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J23-892 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D213-61 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D213-61 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J23-89 |
| filingDate | 2017-01-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2020-03-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2020-03-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-107056688-B |
| titleOfInvention | Preparation method of 2, 3-dichloropyridine |
| abstract | The invention discloses a preparation method of 2, 3-dichloropyridine, which takes 2,3, 6-trichloropyridine as a raw material, hydrogen as a hydrogen source and Pd-Ni/SiO 2 As catalyst, hydrogen as hydrogen source in Pd-Ni/SiO 2 And in the presence of a catalyst and an acid-binding agent, carrying out catalytic hydrogenation reaction at the pressure of 2-4 MPa and the temperature of 50-120 ℃, and reacting for 8-20 h to obtain 2, 3-dichloropyridine. The conversion rate of the raw material is 93.4%, the selectivity of the product 2, 3-dichloropyridine is 89.2%, and the defects of more three wastes and low product yield in the traditional method are overcome. Reaction adopts SiO 2 Compared with the traditional Pd/C catalyst, the supported Pd-Ni bimetallic catalyst has the advantages of good stability, high selectivity, low Pd consumption and repeated application, greatly reduces the production cost and has higher industrial application value. |
| priorityDate | 2017-01-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 55.