| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_841ebe0d642252dfb3933b5c6a204418 |
| classificationCPCAdditional |
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/C01P2002-60
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2002-76
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/C01P2006-80
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2006-60
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/C01P2006-11
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2006-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2006-16
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2006-13 |
| 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/C01F7-34
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 |
2017-05-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
CN-106795003-A |
| titleOfInvention |
Precipitated alumina and its preparation method |
| abstract |
The present invention provides a process for the production of alumina having a seeding phase and a precipitation phase. During the seeding stage, a seed mixture is produced by adding an aluminum salt to an aqueous solution and then adding an alkali metal aluminate to the mixture while maintaining the seed mixture at a substantially neutral pH. The precipitation stage produces precipitated alumina by adding aluminum salt and alkali metal aluminate together to the seed mixture while maintaining a pH of 6.9-7.8. The recovered precipitated alumina has at least one, preferably all of the following characteristics: i) a crystallite size of 33‑42 Ang. (using XRD) on the (120) diagonal plane; ii) Crystallite d-spacing (020) of 6.30-6.59 Ang.; iii) high porosity with an average pore diameter of 115-166 Ang.; iv) relatively low bulk density of 250-350 kg/ m3 ; v) at 1100 A surface area of 60-80 m 2 /g after 24 hours of calcination at °C; and, vi) a pore volume of 0.8-1.1 m 3 /g after one hour of calcination at 1000°C. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-113242763-A |
| priorityDate |
2014-08-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |