http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-109368657-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2006-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2006-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2006-16 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2006-17 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2004-03 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01B39-38 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01B39-38 |
| filingDate | 2018-08-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2021-09-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2021-09-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-109368657-B |
| titleOfInvention | Preparation method of framework metal high-dispersion type hierarchical pore H-ZSM-5 molecular sieve |
| abstract | The invention discloses a preparation method of a framework metal high-dispersion type hierarchical pore H-ZSM-5 molecular sieve, which comprises the following steps: oxidizing and modifying the carbon black to prepare hydrophilic carbon black serving as a hard template agent; preparing nanometer bimetal species by a space limited domain method, and using the nanometer bimetal species as a metal source for doping a framework; one-step in-situ hydrothermal synthesis of a metal framework doped hierarchical pore Na-ZSM-5 molecular sieve; and (4) preparing the H-type molecular sieve by Na-type molecular sieve ion exchange. The H-ZSM-5 molecular sieve prepared by the method of the invention keeps the advantages of the microporous molecular sieve, and simultaneously increases regular mesoporous channels in the structure, thereby improving the mass transfer performance of the molecular sieve. The method avoids the problems of reduced crystallinity of molecular sieve parent and damaged active center caused by mesoporous manufacturing by post-treatment. Isomorphous substitution of nano metal species increases active metal sites of the molecular sieve, and improves the reaction performance of the catalyst. The dosage of the reagent caused by multiple times of controllable adjustment/modification of the molecular sieve structure is saved, and the preparation process flow of the catalyst is shortened. |
| priorityDate | 2018-08-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 44.