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US 10,648,961 B2Granted
Core-shell type catalyst and gas sensor including the catalyst
AssigneeFuji Electric Co., Ltd.
InventorsNaoyoshi Murata, Yukari Shibuta, Takuya Suzuki, Makoto Okamura
Life of this patent
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Abstract
A core-shell structure (a diameter is about 5 nm) is located on an Al2O3 catalyst support. Platinum (Pt metal) is a core, and a shell that surrounds the core has a solid solution structure (A1-xBxOY) (where X is a composition that composes A and B, and Y is a composition of oxygen (O)) that is composed of platinum, palladium, and oxygen.
Claims17
A core-shell catalyst, consisting of:
- a catalyst particulate consisting of
- a core portion consisting of a metal material consisting of a single metal element which is a first metal element, and
- a shell portion having a solid-phase structure that is comprised of
- a plurality of metal materials including the first metal element and a second metal element that is different from the first metal element and
- a non-metal material consisting of a single non-metal element;
- and
- a catalyst support for immobilizing the catalyst particulate.
4 more elements
Dependencies are inferred from the claim text.