Process for the preparation of silicate and its use for the preparation of precipitated silica
US11027981B2 · kind B2 · utility
1Cited by
6References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 30, 2016 |
| Grant date | Jun 8, 2021 |
| Priority date | — |
| Expiry date | Sep 30, 2036 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01B33/325
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The invention relates to a novel process for the preparation of silicate comprising: reacting rice husk ash with a silicate precursor P1 to obtain a silicate S2 having a SiO2/MxO molar ratio MR2, in which the precursor P1 is either a silicate S1 having a SiO2/MxO molar ratio MR1 such that MR2>MR1, or a mixture of sand with metal hydroxide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.