IMPROVED SILICA MEMBRANES AND PROCESS OF PRODUCTION THEREOF
摘要
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.
申请公布号
WO0193993(A1)
申请公布日期
2001.12.13
申请号
WO2001AU00692
申请日期
2001.06.12
申请人
THE UNIVERSITY OF QUEENSLAND;RUDOLPH, VICTOR;DA COSTA, JOAO, DINIZ;LU, GAOQING, PROFESSOR
发明人
RUDOLPH, VICTOR;DA COSTA, JOAO, DINIZ;LU, GAOQING, PROFESSOR