公开(公告)号：US20230347320A1

公开(公告)日：2023-11-02

申请号：US17796478

申请日：2021-01-29

Applicant: Japan Science and Technology Agency

Inventor： Katsutoshi Nagaoka ,  Yuta Ogura ,  Katsutoshi Sato ,  Shin-ichiro Miyahara

IPC: B01J23/04 ,  B01J23/02 ,  B01J23/75 ,  B01J23/46 ,  B01J23/745 ,  B01J23/755 ,  B01J37/08 ,  B01J37/02 ,  C01C1/04

CPC classification number: B01J23/04 ,  B01J23/02 ,  B01J23/75 ,  B01J23/462 ,  B01J23/745 ,  B01J23/755 ,  B01J37/088 ,  B01J37/024 ,  B01J37/0205 ,  C01C1/0411

Abstract: A composite oxide including an oxide of a metal element L and an oxide of a metal element N, and represented by a composition of general formula LnN1-n, wherein the metal element L is a Group 1 element, a Group 2 element, or a Group 1 element and a Group 2 element, the metal element N comprises a Group 1 or Group 2 element other than the metal element L, n is 0.001 or more and 0.300 or less, the oxide of the metal element L and the oxide of the metal element N form no solid solution, and oxide particles of the metal element L are deposited on surfaces of oxide particles of the metal element N. Also, a metal-carrier material and an ammonia synthesis catalyst having, supported on this composite oxide, particles of at least one metal M selected from the group consisting of cobalt, iron, and nickel.