公开(公告)号：JP2001089129A

公开(公告)日：2001-04-03

申请号：JP26477899

申请日：1999-09-20

Applicant: AGENCY IND SCIENCE TECHN

Inventor： YODA SATOSHI ,  OTAKE KATSUTO ,  TAKEBAYASHI YOSHIHIRO ,  SUGATA TAKESHI ,  SAKO TAKESHI

IPC: B01J3/00 ,  C01B33/16

Abstract: PROBLEM TO BE SOLVED: To solve the problems of conventional process for the impregnation of a metal compound in a wet silica gel in liquid phase comprising the long time necessary for the impregnation into the gel depending on the kind and concentration of the compound and the formation of an insufficiently impregnated product to cause frequent failure in getting a monolithic composite material of metal compound and silica aerogel. SOLUTION: A dry medium mixed with a metal compound is impregnated in a wet silica gel and dried to obtain a silica aerogel composed of the metal compound and silica particles forming a composite material. In the above process, both of the impregnation process and the drying process are carried out under supercritical condition of the dry medium to obtain the objective monolithic composite material of metal compound and silica aerogel.