| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_841ebe0d642252dfb3933b5c6a204418 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2002-54
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2002-52
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2002-50
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2006-16
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/C01P2002-76
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2006-11
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2006-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2006-13
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2002-72
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2002-70
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2006-60
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2002-60
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2006-80 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01F7-14
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01F7-141
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01F7-34 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01F7-141
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01F7-14 |
| filingDate |
2015-08-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_149e37245ae678cfdb5beaa07c4542bc |
| publicationDate |
2017-04-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
KR-20170039721-A |
| titleOfInvention |
Precipitated alumina and method of preparation |
| abstract |
The present invention relates to a process for producing alumina having a seeding phase and a precipitation phase. During the seeding period, a seed mixture is formed by adding an aluminum salt to an aqueous solution and then adding an alkali metal aluminate to the mixture while generally maintaining the seed mixture at neutral pH. The precipitation phase forms precipitated alumina by simultaneously adding an aluminum salt and an alkali metal aluminate to the seed mixture while maintaining the pH at 6.9 to 7.8. The recovered precipitated alumina preferably has at least one of the following characteristics: i) (using XRD) (120) grain size of 33 to 42 Angstroms in diagonal; ii) 6.30 to 6.59 Angstrom crystal grains d-spacing (020); iii) a high porosity having an average pore diameter of from 115 to 166 Angstroms; iv) a relatively low bulk density of 250 to 350 kg / m3; v) 60 to 80 m 2 / g of surface area after calcination at 1100 ° C for 24 hours; And vi) 0.8 to 1.1 m < 3 > / g of pore volume after calcination at 1000 DEG C for 1 hour. |
| priorityDate |
2014-08-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |