Composite membrane having a surface layer of an ultrathin film of cage-shaped zeolite and processes for production thereof
US4699892A · kind A · utility
73Cited by
6References
11Claims
0Family size
Inventor
Key dates
| Filing date | Jan 27, 1986 |
| Grant date | Oct 13, 1987 |
| Priority date | — |
| Expiry date | Jan 27, 2006 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2229/66
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A composite membrane having molecular sieve activity and/or catalytic activity composed of a porous support of a metal, an inorganic material or a polymeric material and combined with its one surface, an ultrathin film of a cage-shaped zeolite composed of a 6-, 8- 10- or 12-membered oxygen ring window having aluminum or gallium atoms, silicon or germanium atoms, and oxygen atoms as constituent members. The composite membrane can be produced, for example, by the various processes described and claimed herein.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.