Zeolite-based adsorbents based on LSX zeolite of controlled outer surface area, process for preparing them and uses thereof
US9919289B2 · kind B2 · utility
4Cited by
15References
22Claims
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Key dates
| Filing date | Nov 13, 2015 |
| Grant date | Mar 20, 2018 |
| Priority date | — |
| Expiry date | Nov 13, 2035 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2259/4068
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention relates to a zeolite-based adsorbent comprising at least one zeolite of FAU structure of LSX type and comprising barium and/or potassium, in which the outer surface area of said zeolite-based adsorbent, measured by nitrogen adsorption, is between 20 m2·g−1 and 100 m2·g−1, limits inclusive. The present invention also relates to the use of such a zeolite-based adsorbent as an adsorption agent, and also to the process for separating para-xylene from aromatic isomer fractions containing 8 carbon atoms.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.