Systems and methods for converting carbon dioxide into chemical feedstock

Patent metadata

Field	Value
Publication number	US-9815702-B1
Application number	US-201514640243-A
Country	US
Kind code	B1
Filing date	Mar 6, 2015
Priority date	May 30, 2012
Publication date	Nov 14, 2017
Grant date	Nov 14, 2017

Abstract

Provided herein are systems containing a solar reactor having a mixture of plasmonic material and oxygen-conducting material that can convert carbon dioxide into a chemical feedstock.

First claim

We claim:

1. A system for converting carbon dioxide into a chemical feedstock, the system comprising:
a solar reactor having an inlet and an outlet; and
a mixture of plasmonic material and oxygen-conducting material contained within the reactor,
where the oxygen-conducting material does not contain ceria and is a perovskite with a general formula of ABO 3 or a spinel-type oxide with a general formula of A 2 BO 4 and wherein the A site element is selected from the group consisting of: beryllium, magnesium, calcium, strontium, barium, radium, lanthanum, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium, and two or more-element combinations thereof,
where the plasmonic material is configured to generate heat upon exposure to solar energy,
where the heat from the plasmonic material is configured to generate oxygen vacancies in the oxygen-conducting material, and
where the oxygen-conducting material is configured to thermally separate the oxygen atoms from carbon dioxide to form carbon monoxide.

2. The system of claim 1 , wherein the solar reactor has a translucent or transparent wall.

3. The system of claim 1 , wherein the solar reactor has a wall made of quartz or a ceramic material.

4. The system of claim 1 , wherein the plasmonic material comprises a metal.

5. The system of claim 4 , wherein the metal comprises a noble metal.

6. The system of claim 5 , wherein the noble metal is gold, silver, copper, or platinum.

7. The system of claim 4 , wherein the metal comprises a bimetallic combination of a noble metal and another metal.

8. The system of claim 1 , further comprising a water/gas shift (WGS) reactor.

9. The system of claim 8 , wherein the WGS is configured to operate at a temperature range of 200° C.-500° C.

10. The system of claim 1 , further comprising a Fischer-Tropsch synthesis (FTS) reactor.

11. The system of claim 10 , wherein the FTS reactor is configured to operate at 220° C.−350° C.

12. The system of claim 1 , wherein the solar reactor is configured to withstand temperatures up to 800° C.

13. The system of claim 1 , wherein the solar rector contains 80% to 95% oxygen-conducting material and 5% to 20% plasmonic material by weight, wherein the total of oxygen-conducting material and plasmonic material by weight is 100%.

14. The system of claim 1 , further comprising a concentrator configured to focus solar light on the solar reactor.

15. The system of claim 1 , further comprising a carbon dioxide emission source configured to supply carbon dioxide to the inlet of the solar reactor.

16. The system of claim 15 , further comprising a carbon dioxide separation system configured to purify the carbon dioxide from the carbon dioxide emission source prior to supplying the carbon dioxide to the inlet of the solar reactor.

17. The system of claim 1 , wherein the oxygen-conducting material is La 1-X Sr X CoO 3 , where X is selected from the group consisting of: 0, 0.25, 0.5, 0.75, and 1.

Assignees

• Kuhn John Norbert
• Bhethanabotla Venkat R
• Daza Yolanda Andreina
• Dutta Debosruti
• Univ South Florida

Inventors

• Kuhn John Norbert
• Bhethanabotla Venkat R
• Daza Yolanda Andreina
• Dutta Debosruti

Classifications

• B01J23/8946 Primary

  with alkali or alkaline earth metals · CPC title

• B01J35/733

  Perovskite-type · CPC title

• B01J2235/00

  Indexing scheme associated with group B01J35/00, related to the analysis techniques used to determine the catalysts form or properties · CPC title

• B01J2235/15

  X-ray diffraction · CPC title

• B01J2235/30

  Scanning electron microscopy; Transmission electron microscopy · CPC title