Invention Grant
- Patent Title: Zeolite-based adsorbents based on LSX zeolite of controlled outer surface area, process for preparing them and uses thereof
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Application No.: US15526130Application Date: 2015-11-13
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Publication No.: US09919289B2Publication Date: 2018-03-20
- Inventor: Ludivine Bouvier , Cécile Lutz , Catherine Laroche , Julien Grandjean , Arnaud Baudot
- Applicant: IFP ENERGIES NOUVELLES , ARKEMA FRANCE
- Applicant Address: FR Rueil-Malmaison FR Colombes
- Assignee: IFP Energies Nouvelles,Arkema France
- Current Assignee: IFP Energies Nouvelles,Arkema France
- Current Assignee Address: FR Rueil-Malmaison FR Colombes
- Agency: RatnerPrestia
- Priority: FR1460953 20141113
- International Application: PCT/EP2015/076532 WO 20151113
- International Announcement: WO2016/075281 WO 20160519
- Main IPC: B01J20/18
- IPC: B01J20/18 ; C07C7/13 ; B01J20/28 ; B01J20/30 ; B01D15/18
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.
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