CATALYST COMPRISING AN INTEGRATED BASE MATERIAL AND A NANOCRYSTALLINE METAL OXIDE COMPOSITE, PRODUCTION METHOD THEREFOR, AND CATALYST COMPONENT

• Main Authors: TSUZUKI Yoshikazu, WAKAE Mariko, KURUSU Kazuhiko, IIZUKA Kenji
• Format: Patent
• Language: English; French; German
• Published: 14.04.2021
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; THEIR RELEVANT APPARATUS; TRANSPORTING

The present invention provides a base material-integrated nanocrystalline metal oxide composite-containing catalyst and the liked, in which the surface area of a main surface (active surface) can be effectively enlarged; nanocrystalline pieces do not readily detach; the entire shape thereof can be maintained; and excellent catalytic activity is exhibited. A catalyst (1) of the present invention includes: a base material (20); and a nanocrystalline metal oxide composite (10) having a plurality of accumulated flake-like nanocrystalline pieces (12), (12) in a connected state on the surface of the base material, the flake-like nanocrystalline pieces containing a metal oxide to accumulate (20), wherein the nanocrystalline metal oxide composite (10) is configured such that an end surface of at least one of the nanocrystalline pieces (12) is connected; the nanocrystalline pieces (12) include a plurality of stacked surfaces stacked in a direction in which a main surface (14) becomes an uppermost stacked surface; and when metal atoms or oxygen atoms forming the metal oxide are regarded as main constituent atoms, a proportion by number of the main constituent atoms to the metal atoms and the oxygen atoms forming the metal oxide existing on each stacked surface is 80% or more, and the main constituent atoms have a specific crystal orientation which changes in each stack.