Zeolitic adsorbents with large external surface area, process for preparing them and uses thereof
US10675607B2 · kind B2 · utility
3Cited by
12References
19Claims
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Key dates
| Filing date | Jan 25, 2018 |
| Grant date | Jun 9, 2020 |
| Priority date | — |
| Expiry date | Dec 8, 2038 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2257/556
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention relates to zeolitic adsorbents based on agglomerated crystals of FAU zeolite containing barium and/or potassium, with large external surface area, combining optimum properties in terms of selectivity and mechanical strength. These adsorbents find applications in the separation of cuts of C8-aromatic isomers and notably of xylenes, in the separation of isomers of substituted toluene such as nitrotoluene, diethyltoluene, toluenediamine, in the separation of cresols, and in the separation of polyhydric alcohols such as sugars.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.