http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-105688990-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J31-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J2531-845 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J2531-72 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J2231-70 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J31-403 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J31-4015 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J35-0006 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J31-2239 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J31-40 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J31-04 |
| filingDate | 2016-01-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2019-02-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2019-02-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-105688990-B |
| titleOfInvention | A kind of method for regenerating cobalt manganese acetate composite catalyst from PTA oxidation residue |
| abstract | The invention discloses a method for regenerating a cobalt-manganese acetate composite catalyst from purified terephthalic acid (PTA) oxidation residue, which is characterized by comprising the following steps: (1) adding acetic acid aqueous solution to the PTA oxidation residue, stirring, standing for a period of time, and filtering Obtain the filtrate; ( 2 ) let the filtrate stand overnight, scrape off the wax on the surface of the filtrate, add a certain concentration of Na2CO3 solution, stir, adjust the pH to a slightly alkaline, and filter to obtain a filter cake; (3) Add a certain concentration to the filter cake acetic acid solution, fully stirred to make the filter cake completely dissolved in the acetic acid solution; (4) add an appropriate amount of activated carbon and a small amount of H 2 O 2 to the resulting solution, filter to remove pigment and Fe 2+ ; (5) depressurize distillation of the above filtrate Removing excess acetic acid and part of water, and cooling to obtain cobalt manganese acetate hydrate crystals; (6) Further vacuum drying the obtained hydrate crystals to obtain a cobalt manganese acetate mixed catalyst; (7) The mixed catalyst is subjected to Co 2+ and Mn After the content of 2+ is determined, Mn(Ac) 2 is added according to the calculation to adjust Co 2+ : Mn 2+ =1:3 ( m / m ) to obtain a regenerated cobalt-manganese acetate composite catalyst. The regenerated cobalt-manganese acetate composite catalyst recovered by the invention effectively removes the influence of metal ions Fe 2+ and organic by-products on the PTA oxidation process, and the regenerated catalyst has good quality and high grade. The regenerated cobalt-manganese acetate composite catalyst prepared according to the above method can be used as the catalyst for the PTA oxidation process again. |
| priorityDate | 2016-01-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 54.