IP Library › Granted Patent US 12,214,340
Granted Patent B2
US 12,214,340 · App. 18/096,758 · Granted Feb 4, 2025

Catalytic polymer processing

Inventors: Massimiliano Delferro (Chicago, IL); Magali S. Ferrandon (Steger, IL); Kenneth R. Poeppelmeier (Evanston, IL); Aaron D. Sadow (Ames, IA); Susannah Scott (Goleta, CA); Anne M. LaPointe (Lemont, IL); Geoffrey Coates (Lemont, IL)
Assignees: UCHICAGO ARGONNE, LLC; THE REGENTS OF THE UNIVERSITY OF CALIFORNIA, A CALIFORNIA CORPORATION; CORNELL UNIVERSITY; NORTHWESTERN UNIVERSITY, AN ILLINOIS NOT-FOR-PROFIT CORPORATION; IOWA STATE UNIVERSITY RESEARCH FOUNDATION, INC.
B01J35/23B01J23/42B01J35/40C08F8/50C08F10/02
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Quick Facts
Patent No.
US 12,214,340
App. No.
18/096,758
Granted
Feb 4, 2025
Kind
B2
Abstract

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 catalyst includes metal nanoparticles in an order array on a substrate.

Claims (20)

1. A catalyst comprising:

a perovskite substrate; and

a plurality of ordered metal nanoparticles, having an average size of 5 nm±4 nm, anchored to the perovskite substrate at exposed undercoordinated metal centers of the perovskite substrate;

wherein the plurality of ordered metal nanoparticles are configured for an interparticle spacing corresponding to a desired hydrocarbon fragment product of a catalyzed polymer hydrogenolysis reaction; and

further wherein the plurality of ordered metal nanoparticles are anchored to the exposed undercoordinated metal centers at distances selected from the group consisting of ˜20 Å, 14 Å, 9.8 Å, and 3.4 Å.

2. The catalyst of claim 1 , wherein the plurality of ordered metal nanoparticles comprises a first metal nanoparticle and a second metal nanoparticle having a different composition from the first metal nanoparticle.

3. The catalyst of claim 1 , wherein the perovskite substrate is selected from the group consisting of perovskites with general formula ABO 3-x , where x is in the range 0≤x≤0.5, A is strontium, barium, or calcium, and B is titanium.

4. The catalyst of claim 3 , wherein the perovskite substrate is strontium titanate.

5. The catalyst of claim 1 , wherein the plurality of ordered metal nanoparticles comprise a noble metal having an average particle size of 1 nm.

6. A catalyst comprising:

a perovskite substrate; and

a plurality of ordered metal nanoparticles anchored to the perovskite substrate at exposed undercoordinated metal centers of the perovskite substrate;

wherein the plurality of ordered metal nanoparticles are anchored to the exposed undercoordinated metal centers at distances selected from the group consisting of ˜20 Å, 14 Å, 9.8 Å, and 3.4 Å.

7. The catalyst of claim 6 , wherein each of the plurality of ordered metal nanoparticles has an average size of 1 nm to 9 nm.

8. The catalyst of claim 6 , wherein the plurality of ordered metal nanoparticles comprises a first metal nanoparticle and a second metal nanoparticle having a different composition from the first metal nanoparticle.

9. The catalyst of claim 6 , wherein the plurality of ordered metal nanoparticles have interparticle spacing of 3.5 nm to 6.5 nm.

10. The catalyst of claim 6 , wherein the perovskite substrate is selected from the group consisting of perovskites with general formula ABO 3-x , where x is in the range 0≤x≤0.5, A is strontium, barium, or calcium, and B is titanium.

11. The catalyst of claim 10 , wherein the perovskite substrate is strontium titanate.

12. The catalyst of claim 6 , wherein the plurality of ordered metal nanoparticles have an average particle size of 5 nm (+/−4 nm).

13. The catalyst of claim 6 , wherein the plurality of ordered metal nanoparticles comprise a noble metal.

Assignments (6)
CONFIRMATORY LICENSE Recorded Feb 15, 2024
From: UCHICAGO ARGONNE LLC
To: U.S. DEPARTMENT OF ENERGY
Reel/Frame 066601/0250 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 13, 2023
From: SADOW, AARON D.
To: IOWA STATE UNIVERSITY RESEARCH FOUNDATION, INC.
Reel/Frame 062373/0824 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 13, 2023
From: FERRANDON, MAGALI; DELFERRO, MASSIMILIANO
To: UCHICAGO ARGONNE, LLC
Reel/Frame 062373/0848 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 13, 2023
From: LAPOINTE, ANNE M.; COATES, GEOFFREY
To: CORNELL UNIVERSITY
Reel/Frame 062374/0170 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 13, 2023
From: SCOTT, SUSANNAH L.
To: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA, A CALIFORNIA CORPORATION
Reel/Frame 062374/0970 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 13, 2023
From: POEPPELMEIER, KENNETH R.
To: NORTHWESTERN UNIVERSITY, AN ILLINOIS NOT-FOR-PROFIT CORPORATION
Reel/Frame 062375/0091 →
Continuity (3)
Division 16749885 · Jan 22, 2020
Provisional Application 62796482 · Jan 24, 2019
Related Publication 20230166246A1 · Jun 1, 2023
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