Carbon dioxide removal using lithium borate

Patent metadata

Field	Value
Publication number	US-10913658-B2
Application number	US-201816003778-A
Country	US
Kind code	B2
Filing date	Jun 8, 2018
Priority date	Jun 9, 2017
Publication date	Feb 9, 2021
Grant date	Feb 9, 2021

Abstract

Carbon dioxide removal using lithium borate is generally described.

First claim

What is claimed is:

1. A sequestration material, comprising:
a plurality of particles comprising lithium borate, wherein:
each particle of the plurality of particles has a maximum cross-sectional dimension;
each particle of the plurality of particles has a particle volume;
the plurality of particles has a total particle volume defined by the total of each of the individual particle volumes;
at least about 50% of the total particle volume is made up of particles having maximum cross-sectional dimensions of less than 100 microns; and
at least a portion of the particles comprise Li 3 BO 3 .

2. The sequestration material of claim 1 , wherein the sequestration material is capable of interacting with carbon dioxide such that at least 1.0 mmol of carbon dioxide is sequestered per gram of the sequestration material.

3. The sequestration material of claim 1 , wherein the sequestration material further comprises a salt comprising nitrate and/or nitrite in combination with the lithium borate.

4. A sequestration material, comprising:
a plurality of particles comprising lithium borate; and
a salt comprising nitrate and/or nitrite in combination with the lithium borate,
wherein:
at least 1 wt % of the sequestration material is made up of the salt comprising the nitrate and/or the nitrite;
each particle of the plurality of particles has a maximum cross-sectional dimension;
each particle of the plurality of particles has a particle volume;
the plurality of particles has a total particle volume defined by the total of each of the individual particle volumes; and
at least about 50% of the total particle volume is made up of particles having maximum cross-sectional dimensions of less than 100 microns.

5. The sequestration material of claim 4 , wherein the salt comprising the nitrate and/or the nitrite is a salt of an alkali metal and/or a salt of an alkaline earth metal.

6. The sequestration material of claim 5 , wherein the salt comprising the nitrate and/or the nitrite is a nitrate and/or a nitrite of Na, K, Li, Rb, and/or Cs.

7. The sequestration material of claim 5 , wherein the salt comprising the nitrate and/or the nitrite is a nitrate and/or a nitrite of Na and/or K.

8. The sequestration material of claim 4 , wherein less than or equal to 30 wt % of the sequestration material is made up of the salt comprising the nitrate and/or the nitrite.

9. The sequestration material of claim 4 , wherein the salt comprising the nitrate and/or the nitrite comprises a nitrite.

10. The sequestration material of claim 9 , wherein the salt comprising the nitrate and/or the nitrite comprises KNO 2 and/or NaNO 2 .

11. The sequestration material of claim 4 , wherein the lithium borate comprises Li 3 BO 3 .

12. The sequestration material of claim 4 , wherein the sequestration material is capable of interacting with carbon dioxide such that at least 1.0 mmol of carbon dioxide is sequestered per gram of the sequestration material.

13. A sequestration material, comprising:
a plurality of particles comprising Li 3 BO 3 , wherein:
the sequestration material is capable of interacting with carbon dioxide such that at least 1.0 mmol of carbon dioxide is sequestered per gram of the sequestration material;
each particle of the plurality of particles has a maximum cross-sectional dimension;
each particle of the plurality of particles has a particle volume;
the plurality of particles has a total particle volume defined by the total of each of the individual particle volumes; and
at least about 50% of the total particle volume is made up of particles having maximum cross-sectional dimensions of less than 100 microns.

14. The sequestration material of claim 13 , wherein the sequestration material further comprises a salt comprising nitrate and/or nitrite in combination with the Li 3 BO 3 .

Assignees

• Massachusetts Inst Technology

Inventors

• Harada Takuya
• Hatton Trevor Alan

Classifications

• B01J2220/42

  Materials comprising a mixture of inorganic materials (materials coated or impregnated on a carrier B01J20/32) · CPC title

• B01D2251/302

  of lithium · CPC title

• C01B35/121 Primary

  of alkali metal · CPC title

• B01D2251/304

  of sodium · CPC title

• C01P2004/61

  Micrometer sized, i.e. from 1-100 micrometer · CPC title