http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-110092385-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01B33-26 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J13-0078 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J13-0065 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01B33-26 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J13-00 |
| filingDate | 2019-04-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2022-07-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2022-07-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-110092385-B |
| titleOfInvention | A kind of preparation method of magnesium aluminum silicate hydrogel |
| abstract | A preparation method of magnesium-aluminosilicate hydrogel, the preparation method comprises the following steps: mixing sodium bicarbonate, sodium hydroxide, deionized water and ethylene glycol to prepare lye, mixing magnesium salt, aluminum salt and ethylene glycol. Mixed with deionized water to prepare an aqueous solution containing magnesium and aluminum. Under the condition of constant temperature of 40-60 ° C and stirring, water glass was first added dropwise to the alkaline solution to obtain a silicon-containing liquid, and then the aqueous solution containing magnesium and aluminum was added dropwise to the solution. In the silicon-containing liquid, a reaction liquid is obtained, and the obtained reaction liquid is stirred at a constant temperature of 90 to 140 ° C for 8 to 24 hours, then cooled to room temperature, centrifuged, washed with water, dried, crushed and sieved to obtain magnesium aluminosilicate powder, Add it to deionized water, stir evenly, and let stand to obtain the finished product; the present invention uses ethylene glycol aqueous solution as an azeotrope system to strengthen heat transfer, protect water from being evaporated, and avoid the occurrence of crystalline substances in the reaction solution. Precipitation in a saturated state can inhibit co-crystallization and co-precipitation of impurities, reduce crystal defects, and make the prepared product fine and uniform in particle size, which is conducive to the formation of hydrogels. |
| priorityDate | 2019-04-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 50.