Modification of zeolite or molecular sieve membranes using atomic layer controlled chemical vapor deposition

US6043177A · kind A · utility

Assignee

• The Regents of the University of Technology Office of Technology Transfer · US

Inventors

• John L. Falconer · Boulder, US
• Steven M. George · Boulder, US
• Andrew Ott · Hillsboro, US
• Jason W. Klaus · Portland, US
• Richard D. Noble · Boulder, US
• Hans H. Funke · Boulder, US

Key dates

• Filing date: Jan 21, 1997
• Grant date: Mar 28, 2000
• Expiry date: Jan 21, 2017

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01D2323/38
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A process for modifying surfaces of zeolites and molecular sieve membranes to decrease effective pore size for separation of materials includes atomic layer controlled vapor or liquid deposition. The atomic layer controlled deposition process steps include (i) exposing the surface to a metal atom coordinated with ligand groups having bonds that are hydrolyzable to form molecular bonded structures on the surface, which structures comprise the metal atoms coordinated with the ligand group or a modified ligand group and then (ii) hydrolyzing the bonds and possibly, but not necessarily, cross-linking the bonds in the ligand or modified ligand group.