Zeolite adsorbents with low binder content and large external surface area, method for preparation of same and uses thereof
US10449511B2 · kind B2 · utility
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18References
20Claims
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Key dates
| Filing date | Aug 4, 2015 |
| Grant date | Oct 22, 2019 |
| Priority date | — |
| Expiry date | Aug 24, 2035 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2253/108
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention relates to a zeolite absorbent comprising at least one FAU zeolite with hierarchical porosity and comprising barium or barium and potassium, and the external surface area of which is greater than 20 m2·g−1, and the non-zeolite phase content being between 6% and 12% by weight with respect to the total weight of the absorbent. The present invention also relates to the use of such a zeolite absorbent as an adsorption agent, as well as the method for separation of para-xylene from aromatic isomer fractions with 8 carbon atoms.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.