Nano-engineered catalysts for dry reforming of methane
US-2018353942-A1 · Dec 13, 2018 · US
Catalysts comprising silicon modified nickel
US11801495B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11801495-B2 |
| Application number | US-202117319361-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 13, 2021 |
| Priority date | Mar 12, 2018 |
| Publication date | Oct 31, 2023 |
| Grant date | Oct 31, 2023 |
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Abstract
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Nickel-based catalysts comprising silicon modified nickel (nickel silicate) are provided, as are methods for using the catalysts to i) convert methane to CO and H 2 (e.g. for use in synthetic chemical compound production); or to ii) convert methane to oxygenated hydrocarbons e.g. one or more of methanol, acetone, formaldehyde, and dimethyl ether. The catalysts are bifunctional and comprise both Ni metallic catalytic sites and acidic nickel-silicon catalytic sites, and the conversions are performed under moderate reaction conditions.
First claim
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The invention claimed is: 1. Catalytic nanoparticles comprising an internal core comprising metallic nickel, and at least one external layer comprising Ni, Si, and O species, wherein the at least one external layer surrounds the internal core, wherein the catalytic nanoparticles include both Ni metallic catalytic sites and acidic nickel-silicon catalytic sites in the at least one external layer, and wherein the at least one external layer has a binding energy (BE) of Ni photoelectrons that is 2-3 eV greater than the BE of Ni photoelectrons of pure metallic Ni. 2. Catalytic nanoparticles comprising an internal core comprising metallic nickel, at least one external layer comprising Ni, Si, and O species, wherein the at least one external layer surrounds the internal core, and an intermediate layer between the internal core and the external layer, wherein the catalytic nanoparticles include both Ni metallic catalytic sites and acidic nickel-silicon catalytic sites in the at least one external layer, wherein the Ni in the at least one external layer exhibits a BE of Ni photoelectrons of 0.5 eV to 2 eV greater than pure metallic Ni, and wherein the intermediate layer comprises Ni, Si, and O species, wherein the Ni in the intermediate layer exhibits a BE of no more than 0.5 eV greater than pure metallic Ni.
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X-ray diffraction · CPC title
Nanoparticles · CPC title
Infrared [IR] · CPC title
- B01J35/393Primary
Metal or metal oxide crystallite size · CPC title
Indexing scheme associated with group B01J35/00, related to the analysis techniques used to determine the catalysts form or properties · CPC title
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- What does patent US11801495B2 cover?
- Nickel-based catalysts comprising silicon modified nickel (nickel silicate) are provided, as are methods for using the catalysts to i) convert methane to CO and H 2 (e.g. for use in synthetic chemical compound production); or to ii) convert methane to oxygenated hydrocarbons e.g. one or more of methanol, acetone, formaldehyde, and dimethyl ether. The catalysts are bifunctional and comprise bot…
- Who is the assignee on this patent?
- Univ Washington State
- What technology area does this patent fall under?
- Primary CPC classification B01J35/393. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Oct 31 2023 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 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).