Method for exchanging interlayer anions of a layered double hydroxide
US10882753B2 · kind B2 · utility
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Inventor
Key dates
| Filing date | Sep 15, 2017 |
| Grant date | Jan 5, 2021 |
| Priority date | — |
| Expiry date | Feb 22, 2038 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2303/16
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The invention relates to a method for exchanging interlayer anions of a layered double hydroxide (LDH) with other anions whose affinity for the LDH is lower than the one of the starting interlayer anions, which comprises the successive steps of: (1) exchanging the starting interlayer anions of a layered double hydroxide with polyoxometalate anions in order to obtain a layered double hydroxide with polyoxometalate anions as interlayer anions, and (2) exchanging the polyoxometalate anions of the layered double hydroxide obtained in step (1) with other anions whose affinity for the LDH is lower than the one of the starting interlayer anions in order to obtain a layered double hydroxide with other anions as interlayer anions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.