Membrane

The present invention relates to an improved membrane and a process for producing improved membranes. A process for treating zeolite membranes to improve their performance and to improve their coherence consists of forming a film of zeolite material on a porous support to form a zeolite membrane, co...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Bratton, Graham John, Buck, Karon Doreen, Naylor, Timothy De Villiers
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:The present invention relates to an improved membrane and a process for producing improved membranes. A process for treating zeolite membranes to improve their performance and to improve their coherence consists of forming a film of zeolite material on a porous support to form a zeolite membrane, contacting the membrane with tetraethylorthosilicate (TEOS), and reacting said TEOS with said zeolite membrane to form a supported membrane with open pores without defective pin holes. The process may further comprise pre-treatment of the porous support with a zeolite initiating agent, or post-treatment of the treated membrane with a silicic or polysilicic acid.