公开(公告)号：JPS6434447A

公开(公告)日：1989-02-03

申请号：JP19031587

申请日：1987-07-31

Applicant: AGENCY IND SCIENCE TECHN ,  NICHIBI KK ,  OSAWA TAIKA KK ,  TAIMEI KAGAKU KOGYO KK

Inventor： SHIBAZAKI YASUO ,  WATAMURA SHINJI ,  MIZUTA HIROYUKI ,  OSAWA TADASHI ,  IZAWA YUICHI ,  MIYAMATSU NORIHISA

IPC: B01J23/00 ,  B01J23/74 ,  B01J23/755 ,  B01J35/04 ,  B01J37/30

Abstract: PURPOSE:To extend an effective surface area and to improve heat resistance and physical strength, by bonding an active catalyst component to a carrier in a pore through a spinel-structure layer comprising Al and the metal of the active catalyst component, so as to form a multilayer thereof over the pore surface. CONSTITUTION:An aluminum compound and water are added to ion exchange fibers containing catalytic metal ions, and the resulting mixture is formed into a desired shape and calcined at a temperature not lower than 1,000 deg.C, thereby preparing a heat-resistant porous catalyst. This heat-resistant porous catalyst 1 comprises alpha-alumina as a carrier and a metal or its oxide as an active catalyst component. At least in a pore 4, the active catalyst component is so bonded to the carrier, through a spinel-structure layer 2 comprising aluminum and the metal of the active catalyst component, as to form a multilayer thereof over the pore surface.