Method for membrane deposition
US8574670B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 19, 2011 |
| Grant date | Nov 5, 2013 |
| Priority date | — |
| Expiry date | Sep 26, 2031 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05D3/0493
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method and apparatus for applying a uniform membrane coating to a substrate, such as a honeycomb structure, having a plurality of through-channels, wherein the through-channels have an average diameter of less than or equal to 3 mm. The method includes providing a liquid precursor comprising membrane-forming materials to the substrate and applying a pressure differential across the substrate. The pressure differential causes the liquid precursor to travel uniformly through the through-channels, depositing the membrane-forming materials on the walls of the through-channels and forming the membrane on the walls of the through-channels. The apparatus includes a chamber capable of holding the substrate and of maintaining a pressure differential across the plurality of through-channels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.