Membrane
US6383563B1 · kind B1 · utility
3Cited by
19References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 25, 1998 |
| Grant date | May 7, 2002 |
| Priority date | — |
| Expiry date | Sep 25, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2325/10
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.