Improved silica membranes and process of production thereof

B - Operations – Transporting – 01 – D

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

B01D 71/02 (2006.01) B01D 71/70 (2006.01)

Patent

CA 2411201

A method of producing a weakly branched silica membranes coated onto a substrate using a two-step catalysed hydrolysis sol-gel process. A tetraethylorthosilicate (TEOS)/ethanol solution is formed and placed in an ice bath. An acid/water solution is formed and added to the TEOS/ethanol solution to form a TEOS/ethanol/acid/water solution, which inturn is refluxed. A two- step sol is prepared by adding water and nitric acid to the refluxed TEOS/ethanol/acid/water solution and initiating a two-step sol-gel process. From the two-step sol a membrane film layer is deposited on a substrate, for use in a number of applications, including selective separation of gasses.

La présente invention concerne un procédé de production de membranes de silicate faiblement ramifié appliquées sur un substrat selon un procédé sol-gel d'hydrolyse catalysée en deux étapes. Une solution de tétraéthylorthosilicate (TEOS)/éthanol est formée et placée dans un bain de glace. Une solution d'acide/eau est formée est ajoutée à la solution TEOS/éthanol pour obtenir une solution à base de TEOS/éthanol/acide/eau, laquelle est ensuite refluée. On obtient le sol en deux étapes en ajoutant d'abord de l'eau et de l'acide nitrique à la solution à base de TEOS/éthanol/acide/eau refluée, et en déclenchant ensuite un procédé sol-gel en deux étapes. Du sol en deux étapes, on applique une couche membraneuse sur un substrat en vue de les utiliser dans un certain nombre d'applications, notamment la séparation sélective de gaz.

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

Improved silica membranes and process of production thereof does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Improved silica membranes and process of production thereof, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Improved silica membranes and process of production thereof will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-1708913

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.