Rotary moving bed for CO2 separation and use of same
US-9539540-B2 · Jan 10, 2017 · US
Hydrophobic sorbents for CO2/H2O displacement desorption applications
US11420182B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11420182-B2 |
| Application number | US-201815910212-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 2, 2018 |
| Priority date | Mar 3, 2017 |
| Publication date | Aug 23, 2022 |
| Grant date | Aug 23, 2022 |
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- Title
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Abstract
Official abstract text for this publication.
The disclosure generally relates to CCS sorbents, particularly for CO2/H2O displacement desorption process. The sorbent includes an aluminum oxide support and an alkali metal salt impregnated on the support, and a silicon modification of the sorbent to reduce water uptake by the sorbent and make it more hydrophobic. The silicon modification can be an organosilyl moiety added after the initial sorbent is complete, or a silica source added to the aluminum oxide structure, typically via impregnation. The sorbents demonstrate better H2O/CO2 ratios. Compositions and methods of making are disclosed.
First claim
Opening claim text (preview).
We claim: 1. A silicon-modified CO 2 /H 2 O displacement desorption sorbent, comprising an aluminum compound support; an alkali metal salt impregnated on the aluminum compound support; and 5% to 20% by weight of silica capping hydroxyl positions on the impregnated aluminum compound support. 2. The sorbent of claim 1 , comprising 7% to 15% by weight of silica capping hydroxyl positions on the impregnated aluminum compound support. 3. The sorbent of claim 1 , wherein the aluminum compound comprises aluminum oxide, aluminum oxide hydroxide, aluminum hydroxide, boehmite, or pseudoboehmite. 4. The sorbent of claim 1 , wherein the alkali metal salt comprises a potassium salt, a sodium salt, a lithium salt, or combinations thereof. 5. The sorbent of claim 1 , wherein the alkali metal salt is greater than about 5 weight % of the sorbent as M 2 O. 6. The sorbent of claim 1 , wherein the alkali metal salt is greater than about 8 weight % of the sorbent as M 2 O. 7. A silicon-modified CO 2 /H 2 O displacement desorption sorbent, comprising an aluminum compound support; an alkali metal salt impregnated on the aluminum compound support; and 5% to 15% by weight of silica capping hydroxyl positions on the impregnated aluminum compound support. 8. The sorbent of claim 7 , comprising 7% to 15% by weight of silica capping hydroxyl positions on the impregnated aluminum compound support. 9. The sorbent of claim 7 , wherein the aluminum compound comprises aluminum oxide, aluminum oxide hydroxide, aluminum hydroxide, boehmite, or pseudoboehmite. 10. The sorbent of claim 7 , wherein the alkali metal salt comprises a potassium salt, a sodium salt, a lithium salt, or combinations thereof. 11. The sorbent of claim 7 , wherein the alkali metal salt comprises a potassium salt, a sodium salt, or combinations thereof. 12. The sorbent of claim 7 , wherein the alkali metal salt is greater than about 5 weight % of the sorbent as M 2 O. 13. The sorbent of claim 7 , wherein the alkali metal salt is greater than about 8 weight % of the sorbent as M 2 O.
Assignees
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Classifications
Coated, impregnated or composite adsorbents · CPC title
of sorbents or filter aids other than those covered by B01J20/3408 - B01J20/3425 · CPC title
Alumina · CPC title
Carbon dioxide · CPC title
comprising silica · CPC title
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Frequently asked questions
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- What does patent US11420182B2 cover?
- The disclosure generally relates to CCS sorbents, particularly for CO2/H2O displacement desorption process. The sorbent includes an aluminum oxide support and an alkali metal salt impregnated on the support, and a silicon modification of the sorbent to reduce water uptake by the sorbent and make it more hydrophobic. The silicon modification can be an organosilyl moiety added after the initial s…
- Who is the assignee on this patent?
- Exxonmobil Technology & Engineering Company, Tda Research Inc, Exxonmobile Tech And Engineering Company, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification B01J20/041. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Aug 23 2022 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 5 related publications on this page (citations in our corpus or others sharing the same primary CPC).