Method for separating C8 aromatic hydrocarbon isomer mixture
US12077496B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 26, 2021 |
| Grant date | Sep 3, 2024 |
| Priority date | — |
| Expiry date | Sep 8, 2041 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/50
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention discloses a method of separating C8 aromatic hydrocarbon isomers. The anion-pillared metal-organic framework materials with a pore diameter of 5-10 Å is used as adsorbents to achieve selective adsorption and separation of C8 aromatic hydrocarbon isomers by contacting the C8 aromatic hydrocarbon isomers with the adsorbents; the anion-pillared microporous materials are porous materials formed by metal ion M, inorganic anion A and organic ligand L through coordination bonds, with the general formula of [MAL2]n, where n>4 and n is an integer; the descried “metal ion M” is Fe2+, Co2+, Ni2+, Cu2+; the descried “inorganic anion A” is SiF62−, NbOF52−, TaF72−, ZrF62−, TiF62−, GeF62−, SO3CF3−, NbF6−; the descried “organic ligand L” is selected from any of the following:
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.