Metal oxide foam, amine functional solid sorbent, methods and applications

Patent metadata

Field	Value
Publication number	US-10773236-B2
Application number	US-201213980103-A
Country	US
Kind code	B2
Filing date	Jan 18, 2012
Priority date	Jan 18, 2011
Publication date	Sep 15, 2020
Grant date	Sep 15, 2020

Abstract

Amine functional solid sorbents for carbon dioxide capture and sequestration may be prepared from metal oxide foam solid sorbent supports by treating an appropriate metal oxide foam solid sorbent support with an amine material. Desirable are metal oxide foam solid sorbent supports with a foam structure and morphology at least substantially absent hollow sphere, layered sphere, wormlike and amorphous structure and morphology components. The amine materials may be sorbed into the metal oxide foam solid sorbent support, or alternatively chemically bonded, such as but not limited to covalently bonded, to the metal oxide foam solid sorbent support.

First claim

What is claimed is:

1. A stable, high-capacity sorbent support comprising a porous metal oxide material having a foam-like structure and morphology, where the foam-like structure and morphology is substantially absent of hollow sphere, layered sphere, wormlike and amorphous inclusions, and further wherein a pore size distribution of the sorbent support is bimodal, and wherein the pores of the sorbent support comprise mesopores and macropores, and wherein two peaks are observed as a result of an electron microscopy test or a gas adsorption test.

2. The sorbent support of claim 1 wherein the porous metal oxide material comprises a silica material.

3. A stable, high-capacity sorbent support comprising a porous metal oxide material having a foam-like structure and morphology, where the foam-like structure and morphology is substantially absent of hollow sphere, layered sphere, wormlike, and amorphous inclusions, and wherein a pore size distribution of the sorbent support is bimodal, and wherein the pores of the sorbent support comprise mesopores and macropores, wherein two peaks are observed as a result of an electron microscopy test or a gas adsorption test, and further wherein the porous metal oxide material is selected from the group consisting of titania, hafnia, and zirconia materials, mixtures thereof, composites thereof, and alloys thereof.

4. The sorbent support of claim 1 wherein the pore size distribution of the sorbent support has an irregularly spaced and sized unit cell of size from about 20 to about 200 nanometers and a window opening with a pore size from about 10 to about 40 nm.

5. A stable, high-capacity sorbent material comprising:
a porous metal oxide material having a foam-like structure and morphology, where the foam-like structure and morphology is substantially absent of hollow sphere, layered sphere, wormlike and amorphous inclusions, and further wherein a pore size distribution of the sorbent support is bimodal, and wherein the pores of the sorbent support comprise mesopores and macropores, wherein two peaks are observed as a result of an electron microscopy test or a gas adsorption test; and
an amine material incorporated into the porous metal oxide material to provide the sorbent.

6. The sorbent material of claim 5 wherein the porous metal oxide material comprises a silica material.

7. A stable, high-capacity sorbent material comprising:
a porous metal oxide material having a foam like or a moss like structure and morphology, where the foam like or the moss like structure and morphology is substantially absent of hollow sphere, layered sphere, wormlike and amorphous inclusions, and wherein a pore size distribution of the sorbent support is bimodal, and wherein the pores of the sorbent support comprise mesopores and macropores, wherein two peaks are observed as a result of an electron microscopy test or a gas adsorption test, and further wherein the porous metal oxide material is selected from the group consisting of titania, hafnia and zirconia materials, mixtures thereof, composites thereof and alloys thereof; and
an amine material incorporated into the porous metal oxide material.

8. The sorbent material of claim 5 wherein the porous metal oxide material has an irregularly spaced and sized unit cell of size from about 20 to about 200 nanometers and a window opening with a pore size from about 10 to about 40 nm.

9. The sorbent material of claim 5 wherein the amine material is sorbed into the porous metal oxide material.

10. The sorbent material of claim 9 wherein the amine material comprises polyethyleneimine.

11. The sorbent material of claim 9 wherein the amine material comprises tetraethylenepentamine.

12. The sorbent material of claim 5 wherein the amine material is chemically bonded to the porous metal oxide material.

13. The sorbent material of claim 12 wherein the amine material is polyethyleneimine.

14. A stable, high-capacity sorbent support comprising a porous metal oxide material having a foam-like structure and morphology, wherein the foam-like structure and morphology is substantially absent of any hollow sphere, layered sphere, wormlike or amorphous inclusions, and further wherein a pore size distribution of the sorbent support is bimodal, and wherein the foam-like structure and morphology comprises a pure CO 2 sorption capacity of at least 4.0 mmol g-1, and wherein the foam-like structure and morphology comprises a stable sorption capacity such that the pure CO 2 sorption capacity is stable within an approximately 5% drop combined as a whole upon fifteen or more cycles of CO 2 desorption and adsorption.

15. The sorbent support of claim 14 , wherein the metal oxide material having the foam-like structure and morphology is characterized by a transmission electron microscopy image that illustrates the foam-like structure and morphology.

16. A stable, high-capacity sorbent material consisting essentially of:
a porous metal oxide material having a foam-like structure and morphology, where the foam-like structure and morphology is substantially absent of any hollow sphere, layered sphere, wormlike or amorphous inclusions, and further wherein a pore size distribution of the sorbent support is bimodal, and wherein the pores of the sorbent support comprise mesopores and macropores, further wherein two peaks are observed as a result of an electron microscopy test or a gas adsorption test; and
an amine material incorporated into the porous metal oxide material.

17. The sorbent material of claim 16 , wherein the metal oxide material is characterized by a transmission electron microscopy image which illustrates the foam-like structure and morphology.

18. The sorbent support of claim 2 wherein:
an x-ray diffraction spectrum of the sorbent support shows a downward curvature from 0 to 8 degrees of 2θ, absent a peak from 0.8 to 8 degrees of 2θ; and
the nitrogen absorption/desorption isotherm of the sorbent support shows a hysteresis at relative pressure of about 0.8 to about 1.0.

19. The sorbent of claim 13 wherein:
an x-ray diffraction spectrum of the sorbent support shows a downward curvature from 0 to 8 degrees of 2θ, absent a peak from 0.8 to 8 degrees of 2θ; and
the nitrogen absorption/desorption isotherm of the sorbent support shows a hysteresis at relative pressure of about 0.8 to about 1.0.

20. The sorbent support of claim 1 , wherein the distribution comprises a first small peak centered at around 9.6 nm and a large broad peak centered at around 52 nm.

21. The sorbent material of claim 1 , wherein the macropores are formed due to voids of partially fused mesopores.

22. The capacity sorbent support of claim 14 , wherein the foam-like structure and morphology comprises a stable sorption capacity such that the pure CO 2 sorption capacity is stable within an approximately 10% drop upon fifty or more cycles of CO 2 desorption and adsorption.

23. A stable, high-capacity sorbent support comprising a porous metal oxide material having a foam-like structure and morphology, where the foam-like structure and morphology is substantially absent of hollow sphere, layered sphere, wormlike and amorphous inclusions, and further wherein a pore size distribution of the sorbent support is bimodal, and wherein the pores of the sorbent support comprise mesopores and macropores, and wherein the foam-like structure and morphology comprises a stable sorption capacity such that the pure CO 2 sorption capacity is stable within an approximatel

Assignees

• Giannelis Emmanuel P
• Fu Liling
• Qi Genggeng
• Univ Cornell

Inventors

• Giannelis Emmanuel P
• Fu Liling
• Qi Genggeng

Classifications

• C01G23/047 Primary

  Titanium dioxide · CPC title

• B01J20/28083

  being in the range 2-50 nm, i.e. mesopores · CPC title

• B01J20/3085

  Chemical treatments not covered by groups B01J20/3007 - B01J20/3078 · CPC title

• C01G25/02

  Oxides · CPC title

• B01J20/3204

  Inorganic carriers, supports or substrates · CPC title