Barium-and calcium-based zeolitic adsorbent for gas purification in particular air

US7011695B2 · kind B2 · utility

Assignee

• L'Air Liquide, Société Anonyme à Directoire et Conseil de Surveillance pour l'Étude et l'Exploitation des Procédés Georges Claude · FR

Inventors

• Serge Moreau · Vélizy-Villacoublay, FR
• Elise Renou · Chaville, FR
• Claire Szulman · Meudon, FR

Key dates

• Filing date: Oct 16, 2002
• Grant date: Mar 14, 2006
• Expiry date: Oct 16, 2022

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S95/902
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

Zeolite adsorbent, and method of production, exchanged with calcium and barium cations, for purifying or separating a gas or gas mixture, in particular air, so as to remove therefrom the impurities found therein, such as hydrocarbons and nitrogen oxides (NxOy). The adsorbent is preferably an X or LSX zeolite and the gas purification process is of the TSA type.