| 摘要 |
<p>Strong and durable ultrafiltration membranes with effective separating layers having average pore sizes at almost any point in the range 10 - 80 nm can be made entirely out of alpha alumina by seeding boehmite sols with appropriate seeds, such as very fine alpha alumina with a specific surface area of more than 100 m<2>/g, gelling a thin layer of the sol by contact with a microfilter support, drying, and controlled heating of the coated support.</p> |
