Composite, method for producing composite, ammonia synthesis catalyst, and ammonia synthesis method
US-2017355607-A1 · Dec 14, 2017 · US
Supported metal material, supported metal catalyst, and ammonia synthesis method using the same
US10759668B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10759668-B2 |
| Application number | US-201615774195-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 9, 2016 |
| Priority date | Nov 10, 2015 |
| Publication date | Sep 1, 2020 |
| Grant date | Sep 1, 2020 |
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Abstract
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The present invention provides a supported metal catalyst, a method for synthesizing ammonia using said catalyst, and a supported metal material in which a transition metal is supported on a support, wherein the support is a metal hydride represented by general formula (1): XHn . . . (1); and in general formula (1), X represents at least one selected from the group consisting of atoms from Groups 2 and 3, and lanthanoid atoms, and n is in a range of 2<n<3.
First claim
Opening claim text (preview).
The invention claimed is: 1. A catalyst, comprising: a supported metal material comprising: at least one transition metal selected from the group consisting of Ru, Co and Fe, and a support loading the transition metal, wherein the support is a metal hydride represented by formula (1): XH n (1) wherein, X represents at least one atom selected from the group consisting of Mg, Ca, Sr, Ba, Sc, Y and lanthanoid atoms, and n is in a range of 2≤n≤3, and wherein the catalyst catalyzes the production of ammonia from nitrogen and hydrogen gases. 2. A method of producing ammonia, comprising: bringing a raw material gas containing hydrogen and nitrogen into contact with the catalyst according to claim 1 to obtain ammonia. 3. The method of producing ammonia according to claim 2 , wherein a reaction temperature when bringing the raw material gas into contact with the catalyst is from 100° C. to 600° C. 4. The method of producing ammonia according to claim 2 , wherein a reaction pressure when bringing the raw material gas into contact with the catalyst is from 10 kPa to 20 MPa. 5. The method of producing ammonia according to claim 2 , wherein a water content of the raw material gas is 100 ppm or less. 6. The method of producing ammonia according to claim 2 , wherein a volume ratio of hydrogen to nitrogen (H 2 /N 2 (volume/volume)) when bringing the raw material gas into contact with the catalyst is 0.4 or more. 7. The catalyst according to claim 1 , wherein a loading amount of the transition metal with respect to the support is 0.01% to 30 mass %. 8. The catalyst, according to claim 1 , wherein the metal hydride is CaH 2 .
Assignees
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Classifications
X-ray diffraction · CPC title
with alkali- or alkaline earth metals · CPC title
Preparation of ammonia by synthesis (preparation or purification of gas mixtures for ammonia synthesis C01B3/025) · CPC title
with alkali- or alkaline earth metals · CPC title
with rare earths or actinides · CPC title
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- What does patent US10759668B2 cover?
- The present invention provides a supported metal catalyst, a method for synthesizing ammonia using said catalyst, and a supported metal material in which a transition metal is supported on a support, wherein the support is a metal hydride represented by general formula (1): XHn . . . (1); and in general formula (1), X represents at least one selected from the group consisting of atoms from Grou…
- Who is the assignee on this patent?
- Japan Science & Tech Agency, Tokyo Inst Tech
- What technology area does this patent fall under?
- Primary CPC classification C01C1/0411. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Sep 01 2020 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 4 related publications on this page (citations in our corpus or others sharing the same primary CPC).