Granted Patent B2

US 12,350,651 · App. 17/636,160 · Granted Jul 8, 2025

Inventors: Liang-Shih Fan (Columbus, OH); Yan Liu (Columbus, OH); Lang Qin (Columbus, OH); Zhuo Cheng (Columbus, OH)

Assignee: Ohio State Innovation Foundation

B01J23/745B01J21/08B01J35/23B01J35/393B01J35/647C01B3/40C01B32/40C01B2203/0238C01B2203/0283C01B2203/1047C01B2203/1241

Abstract

Claims (36)

1. An oxygen carrier, comprising:

a mesoporous silica support; and

a plurality of iron oxide-based nanoparticles immobilized on the mesoporous silica support,

wherein the plurality of iron oxide-based nanoparticles comprise 20 volume percent to 70 volume percent of mesopores in the mesoporous silica support;

wherein the plurality of iron oxide-based nanoparticles further comprise a dopant selected from: cobalt (Co), nickel (Ni), and copper (Cu).

2. The oxygen carrier according to claim 1 , wherein the plurality of iron oxide-based nanoparticles include Fe 2 O 3 .

3. The oxygen carrier according to claim 2 , wherein each of the plurality of iron oxide-based nanoparticles comprise 22 weight percent to 86 weight percent of the mesoporous silica support.

4. The oxygen carrier according to claim 1 , wherein the mesoporous silica support is Santa Barbara Amorphous-15 silica (SBA-15), Santa Barbara Amorphous-16 silica (SBA-16), mesoporous silica MCM-41, or mesoporous silica MCM-48.

5. The oxygen carrier according to claim 1 , wherein a portion of the plurality of iron oxide-based nanoparticles is immobilized on a first type of mesoporous silica support;

wherein a remainder portion of the plurality of iron oxide-based nanoparticles is immobilized on a second type of mesoporous silica support, the second type of mesoporous silica support being different from the first type of mesoporous silica support.

6. The oxygen carrier according to claim 1 , wherein the iron oxide-based nanoparticles have an average diameter of 2 nm to 50 nm;

wherein the mesoporous silica support has an average diameter of about 1 μm to about 4 μm; and

wherein the mesoporous silica support has an average pore diameter of about 2 nm to about 50 nm.

7. The oxygen carrier according to claim 1 , wherein a dopant concentration is 0.5 atomic percent (at %) to 15 at %.

8. The oxygen carrier according to claim 7 , wherein the dopant is copper.

9. A method of operating a reactor, the method comprising:

providing a carbonaceous feedstock to an inlet of the reactor;

providing oxygen carrier particles within the reactor, wherein each of the oxygen carrier particles comprises the oxygen carrier of claim 1 ; and

collecting a product stream from an outlet of the reactor, the product stream including at least one of: H 2 , carbon monoxide (CO), and C 2+ hydrocarbon.

10. The method according to claim 9 , further comprising arranging the reactor as a fixed bed, a moving bed, or a fluidized bed,

wherein the carbonaceous feedstock includes at least one of methane (CH 4 ), coal, carbon monoxide (CO), and carbon dioxide (CO 2 ).

11. The method according to claim 9 , further comprising:

after collecting the product stream, providing an oxidizing agent to the inlet of the reactor; and

collecting a second product stream from the outlet of the reactor, the second product stream including carbon monoxide (CO).

12. The method according to claim 9 , wherein the plurality of iron oxide-based nanoparticles include Fe 2 O 3 , ferrite, or combinations thereof; and

wherein the mesoporous silica support is mesoporous silica SBA-15, mesoporous silica SBA-16, or mesoporous silica MCM-41.

13. The method according to claim 9 , wherein the iron oxide-based nanoparticles further comprise a dopant selected from: Co, Ni, and Cu.

14. The method according to claim 9 , wherein a carbonaceous feedstock conversion rate is greater than 95%.

15. A reactor, comprising:

a feedstock inlet in fluid communication with a carbonaceous feedstock source;

a product stream outlet; and

oxygen carrier particles, wherein each of the oxygen carrier particles comprises the oxygen carrier of claim 1 .

16. The reactor according to claim 15 , wherein the plurality of iron oxide-based nanoparticles include Fe 2 O 3 , ferrite, or combinations thereof;

wherein the iron oxide-based nanoparticles have an average diameter of 2 nm to 10 nm;

wherein the mesoporous silica support has an average diameter of about 1 μm to about 4 μm; and

wherein the mesoporous silica support has an average pore diameter of about 6 nm to about 11 nm.

Assignments (1)

Continuity (2)

References Cited (400)