Catalytic upcycling of polymers
US-2021061971-A1 · Mar 4, 2021 · US
Catalytic upcycling of polymers
US11780985B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11780985-B2 |
| Application number | US-202017000969-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 24, 2020 |
| Priority date | Aug 27, 2019 |
| Publication date | Oct 10, 2023 |
| Grant date | Oct 10, 2023 |
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- Title
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Abstract
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A method of upcycling polymers to useful hydrocarbon materials. A catalyst with nanoparticles on a substrate selectively docks and cleaves longer hydrocarbon chains over shorter hydrocarbon chains. The nanoparticles exhibit an edge to facet ratio to provide for more interactions with the facets.
First claim
Opening claim text (preview).
What is claimed is: 1. A catalyst comprising: a SrTiO 3 substrate; a plurality of metal nanoparticles disposed on the substrate; and the plurality of metal nanoparticles having a diameter of 1 to 3 nm and a ratio of facets to edges of less than 0.286. 2. The catalyst of claim 1 , wherein the plurality of nanoparticles comprise Pt. 3. The catalyst of claim 1 , wherein the substrate comprises a perovskite having the formula of ABO 3−x where x is in the range 0≤x≤0.5 and A is an alkaline or rare earth element and B is a 3d, 4d, or 5d transition metal element. 4. The catalyst of claim 3 wherein the substrate comprises alumina platelets or alumina spheres. 5. The catalyst of claim 1 , wherein the substrate is porous. 6. The catalyst of claim 1 , wherein the substrate is non-porous. 7. The catalyst of claim 2 , wherein the plurality of nanoparticles are a plurality of ordered nanoparticles.
Assignees
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Classifications
Nanoparticles · CPC title
- C08J11/10Primary
by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation (depolymerisation to the original monomer C07) · CPC title
Platinum · CPC title
Operations & Transport · mapped topic
Partial depolymerisation · CPC title
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Frequently asked questions
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- What does patent US11780985B2 cover?
- A method of upcycling polymers to useful hydrocarbon materials. A catalyst with nanoparticles on a substrate selectively docks and cleaves longer hydrocarbon chains over shorter hydrocarbon chains. The nanoparticles exhibit an edge to facet ratio to provide for more interactions with the facets.
- Who is the assignee on this patent?
- Uchicago Argonne Llc
- What technology area does this patent fall under?
- Primary CPC classification C08J11/10. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Oct 10 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 4 related publications on this page (citations in our corpus or others sharing the same primary CPC).