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US 12,378,131 B2Granted
Composite oxide, metal-supported material, and ammonia synthesis catalyst
AssigneeJapan Science and Technology Agency
InventorsKatsutoshi Nagaoka, Yuta Ogura, Katsutoshi Sato
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Abstract
A composite oxide including a metal element represented by the composition of general formula: AnXy, where the composite oxide comprises an oxide of A and an oxide of X in a mixed state: A represents an element selected from the group consisting of Sc, Y, and a trivalent lanthanoid; X represents an element selected from the group consisting of Ca, Sr, and Ba; n is 0<n<1; y is 0<y<1; and n+y=1. Also, a metal-supported material in which cobalt particles are supported on the composite oxide.
Claims10
A composite oxide consisting of a composition of the following general formula:
- AnXyOx,
- the composite oxide comprising an oxide of A and an oxide of X in a mixed state without being solid-solved,
- where A represents an element selected from the group consisting of La, Nd, Pm, Sm, Eu, Gd, Dy, Ho, Em, Tm and Lu;
- X represents Ba;
- n is 0<n<1;
- y is 0<y<1;
- n+y=1;
- and
- x represents the number of oxygen atoms necessary for the composite oxide to remain electrically neutral.
6 more elements
Dependencies are inferred from the claim text.