Granted Patent
B2
US 12,215,292 · App. 17/973,381 · Granted Feb 4, 2025
Catalytic upcycling of polyolefins into lubricants
Inventors:
Gokhan Celik (Clarendon Hills, IL); Kimaya Prakash Vyavhare (Woodridge, IL); Robert M. Kennedy (Evanston, IL); Ryan Hackler (Chicago, IL); Ali Erdemir (Naperville, IL); Massimiliano Delferro (Chicago, IL)
Assignee:
UCHICAGO ARGONNE, LLC
C10M111/04B01J21/04B01J23/002B01J23/02B01J23/42B01J23/755B01J35/23C10M105/04C10M107/02C10M177/00C10M2203/022C10M2205/0206
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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 nanoparticles exhibit an edge to facet ratio to provide for more interactions with the facets.
Claims (23)
1. A method of producing a lubricant comprising:
exposing, at a temperature of 150-350° C. and a pressure of 100-200 psi for 12-72 hours, a plurality of polymer molecules to a catalyst comprising a substrate having a plurality of catalytic nanoparticles deposited thereon;
cleaving at least one carbon-carbon bond of a first polymer molecule of the plurality of polymer molecules;
forming a plurality of hydrocarbon fragments from the cleaving;
cleaving at least one carbon-carbon bond of a second polymer molecule of the plurality of polymer molecules; and
forming a second plurality of hydrocarbon fragments.
2. The method of claim 1 , wherein exposing the plurality of polymer molecules is for at least 24 hours.
3. The method of claim 1 , wherein the plurality of catalytic nanoparticles comprise Pt or Ni.
4. The method of claim 1 , wherein the plurality of polymer molecules are solvent-free.
5. The method of claim 1 , wherein the plurality of polymer molecules have a number-average molecular weight ranging from 400-1000 Da.
6. The method of claim 1 , wherein the plurality of hydrocarbon fragments are C30 to C76 alkanes.
7. The method of claim 6 , wherein the plurality of hydrocarbon fragments have 10 branches per 1000 carbon to 400 branches per 1000 carbon.
8. A method of producing a lubricant comprising:
exposing, at a temperature of 150-350° C. and a pressure of 100-200 psi for 12-72 hours, a plurality of polymer molecules to a catalyst comprising a substrate having a plurality of catalytic nanoparticles deposited thereon; and
forming a plurality of hydrocarbon fragments from the plurality of polymer molecules by:
cleaving at least one carbon-carbon bond of a first polymer molecule;
cleaving at least one carbon-carbon bond of a second polymer molecule; and
mixing the plurality of hydrocarbon fragments with poly-α-olefin, wherein the mixture comprises 10-40 wt % of the plurality of hydrocarbon fragments and having a molar mass distribution of from 400 to 1000 Da and 90-60 wt % poly-α-olefin.
9. The method of claim 8 , wherein the plurality of hydrocarbon fragments are C30 to C76 alkanes.
10. The method of claim 9 , wherein the plurality of hydrocarbon fragments have 10 branches per 1000 carbon to 400 branches per 1000 carbon.
11. The method of claim 9 , wherein the mixture comprises 20-30 wt % of the plurality of hydrocarbon fragments.
12. The method of claim 8 , wherein mixing is at a temperature between 40° C. and 100° C.
13. The method of claim 8 , wherein the plurality of hydrocarbon fragments are saturated hydrocarbons.
Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST
Recorded Sep 13, 2024
From: CELIK, GOKHAN; VYAVHARE, KIMAYA; KENNEDY, ROBERT M.; HACKLER, RYAN; ERDEMIR, ALI; DELFERRO, MASSIMILIANO
To: UCHICAGO ARGONNE, LLC
Reel/Frame 068586/0457 →
CONFIRMATORY LICENSE
Recorded Aug 13, 2024
From: UCHICAGO ARGONNE LLC
To: U.S. DEPARTMENT OF ENERGY
Reel/Frame 068590/0070 →
Continuity (2)
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