Modified ETS-10 zeolites for olefin separation

US8017825B2 · kind B2 · utility

Assignee

• The Governors of the University of Alberta · CA

Inventors

• Steven M. Kuznicki · Whitehouse Station, US
• Alejandro Anson · Zaragoza, ES
• Tetyana Segin · Edmonton, CA
• Christopher Lin · Corona, US

Key dates

• Filing date: Dec 16, 2008
• Grant date: Sep 13, 2011
• Expiry date: Dec 2, 2029

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P20/52
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

An as prepared Na-ETS-10 zeolite was modified by ion exchange with a mono-, di-, or tri-valent cation and mixtures thereof. Several of the modified ETS-10 zeolites showed improved pressure swing capacity during the selective adsorption of ethylene from an ethylene/ethane mixture, relative to Na-ETS-10, although the selectivity of adsorption decreased. Modification with Ba2+ and Ba2+/H+ provided modified ETS-10 zeolite adsorbents having a good balance of selectivity and pressure swing capacity for the separation of ethylene/ethane mixtures, making them useful adsorbents for PSA processes.