Alumina-based adsorbent containing sodium and doped with an alkali element for capturing acidic molecules
US11504693B2 · kind B2 · utility
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6Claims
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Key dates
| Filing date | Jun 22, 2015 |
| Grant date | Nov 22, 2022 |
| Priority date | — |
| Expiry date | Sep 19, 2036 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02C20/40
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention relates to an adsorbent comprising an alumina support and at least one alkali element, said adsorbent being obtained by introducing at least one alkali element, identical to or different from sodium, onto an alumina support the sodium content of which, expressed as Na2O equivalent, before the introduction of the alkali element or elements, is comprised between 1000 and 5000 ppm by weight with respect to the total weight of the support. The invention also relates to processes for the preparation of said adsorbent and use thereof in a process for the elimination of acidic molecules such as COS and/or CO2.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.