公开(公告)号：DE69208313D1

公开(公告)日：1996-03-28

申请号：DE69208313

申请日：1992-09-28

Applicant: CORNING INC

Inventor： LETURE MARCEL ,  DAUGER A ,  PRASSAS MICHEL

IPC: B01D71/02 ,  C01B33/20 ,  C01G25/02 ,  C23C18/12 ,  C01G25/00

Abstract: A process to synthetize zircon as an ultra thin coating and comprising: (A) mixing an alcoholic sol resulting from hydrolysis of a silicon alkoxide with an alcoholic solution of a chelated zirconium compound and in the presence of and with a doping agent, until a homogenous mixed sol is obtained; (B) forming a matured sol containing colloidal particles and/or the polymeric entities from the mixed sol; (C) forming a coating of the matured sol on a microporous substrate; (D) drying slowly the sol coating into a gel coating free of flaws; and (E) firing the gel coating at a temperature of 900 to 1500 DEG C to form an ultra thin zircon layer. Use of the zircon layer obtained above as an ultrafiltration membrane or as a protective coating.

公开(公告)号：DE69208313T2

公开(公告)日：1996-09-19

申请号：DE69208313

申请日：1992-09-28

Applicant: CORNING INC

Inventor： LETURE MARCEL ,  DAUGER A ,  PRASSAS MICHEL

IPC: B01D71/02 ,  C01B33/20 ,  C01G25/02 ,  C23C18/12 ,  C01G25/00

Abstract: A process to synthetize zircon as an ultra thin coating and comprising: (A) mixing an alcoholic sol resulting from hydrolysis of a silicon alkoxide with an alcoholic solution of a chelated zirconium compound and in the presence of and with a doping agent, until a homogenous mixed sol is obtained; (B) forming a matured sol containing colloidal particles and/or the polymeric entities from the mixed sol; (C) forming a coating of the matured sol on a microporous substrate; (D) drying slowly the sol coating into a gel coating free of flaws; and (E) firing the gel coating at a temperature of 900 to 1500 DEG C to form an ultra thin zircon layer. Use of the zircon layer obtained above as an ultrafiltration membrane or as a protective coating.