http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-112933981-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D61-362 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D67-0079 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D71-34 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D69-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C29-76 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D71-70 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C31-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D61-36 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C29-76 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D71-70 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D71-34 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D69-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D67-00 |
| filingDate | 2021-01-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2022-04-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2022-04-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-112933981-B |
| titleOfInvention | Ethanol selective pervaporation composite membrane, preparation method thereof and method for separating and purifying ethanol |
| abstract | The invention provides an ethanol selective pervaporation composite membrane, a preparation method thereof and a method for separating and purifying ethanol. The preparation method of the composite membrane comprises the following steps: filling the silica-coated graphene oxide nanocomposite modified by 1H,1H,2H, 2H-perfluorodecyl triethoxysilane as a filler into polydimethylsiloxane, improving the viscosity of a polydimethylsiloxane matrix by adopting a prepolymerization method during filling, and preparing a flat plate pervaporation composite membrane with high content of the silica-coated graphene oxide nanocomposite by taking a polyvinylidene fluoride microfiltration membrane as a supporting layer. According to the invention, a prepolymerization method is adopted to improve the viscosity of the polydimethylsiloxane substrate, so that the addition amount of the silicon dioxide coated graphene oxide nanocomposite in the composite film is increased. Therefore, the composite membrane has higher ethanol flux and selectivity, and has better ethanol separation capability when being used for separating and purifying ethanol aqueous solution. |
| priorityDate | 2021-01-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 42.