Adsorbent with a high macroporosity, usable in a gas adsorption process, especially a PSA process

US6423658B1 · kind B1 · 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

• Jean-Yves Thonnelier · Voisins-le-Bretonneux, FR
• Bernard Lledos · Guyancourt, FR
• Jacques Labasque · Versailles, FR
• Frederic Crayssac · Meudon, FR

Key dates

• Filing date: Apr 12, 2000
• Grant date: Jul 23, 2002
• Expiry date: Apr 12, 2020

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01D2256/24
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A macroporous adsorbent comprising pores having a pore volume (Vm) and a mean pore diameter (dm) such that: Vm≧1 cc.g−1 and dm≧1 &mgr;m, Vm and dm being determined by mercury porosimetry; their manufacturing process using a spheronization and freeze-drying technique; and their use for separating or purifying gases, such as air, synthesis gases or hydrocarbons, especially olefins.