Dopant fluid storage and dispensing systems utilizing high performance, structurally modified particulate carbon adsorbents

Patent metadata

Field	Value
Publication number	US-11577217-B2
Application number	US-201916711556-A
Country	US
Kind code	B2
Filing date	Dec 12, 2019
Priority date	Dec 12, 2019
Publication date	Feb 14, 2023
Grant date	Feb 14, 2023

Abstract

A carbon adsorbent storage and dispensing system is provided with a structurally modified particulate carbon adsorbent designed with optimal volumetric surface area for a certain range of particle sizes. Bulk density and specific surface area are carefully balanced to ensure the volumetric surface area remains within an optimal range to create high performance, as measured by dispensing capacity of the dopant fluid that is reversibly adsorbed onto the structurally modified particulate carbon adsorbent.

First claim

The invention claimed is:

1. A carbon adsorbent storage and dispensing system comprising a vessel and a particulate carbon adsorbent disposed within an interior volume of the vessel, said particulate carbon adsorbent comprising a synthetic polymer-based material, the particulate carbon adsorbent further comprising particles having a particle size at or below about 0.5 mm but no less than about 0.15 mm, the particulate carbon adsorbent further having a volumetric surface area (VSA) therewithin of greater than about 800 m2 of porous surface area per cc of a packed volume of the vessel, the carbon adsorbent further configured to adsorb a fluid that is stored at a storage pressure of less than 1 bar at 20 deg C.

2. The carbon adsorbent storage and dispensing system of claim 1 , further comprising a bulk density ranging from about to 0.45 to 0.7 grams of the particulate carbon adsorbent per cc of the packed volume of the vessel.

3. The carbon adsorbent storage and dispensing system of claim 1 , wherein the particulate carbon adsorbent further comprises a specific surface area of at least about 1000 m2 of porous surface area per gram of the particulate carbon adsorbent.

4. The carbon adsorbent storage and dispensing system of claim 1 , wherein said particulate carbon adsorbent comprises a sum of moisture and atmospheric impurities of no greater than 1 ppm.

5. The carbon adsorbent storage and dispensing system of claim 1 , wherein the fluid is arsine or phosphine.

6. The carbon adsorbent storage and dispensing system of claim 1 , wherein the size of the particles of the particulate carbon adsorbent ranges from 0.15 mm to about 0.5 mm.

7. The carbon adsorbent storage and dispensing system of claim 1 , wherein the VSA of the particulate carbon adsorbent ranges from 800 to 850 m2 of porous surface area per cc of a packed volume of the vessel.

8. The carbon adsorbent storage and dispensing system of claim 1 , wherein the particle size ranges from about 0.15 mm to about 0.2 mm.

9. The carbon adsorbent storage and dispensing system of claim 1 , wherein the fluid adsorbed onto the particulate carbon adsorbent is arsine gas, whereby the storage and dispensing system is configured to dispense greater than 210 grams of the arsine gas per liter of the particulate carbon adsorbent.

10. The carbon adsorbent storage and dispensing system of claim 1 , wherein the fluid adsorbed onto the modified particulate carbon adsorbent is arsine gas and the storage and dispensing system has a deliverable capacity of 300 grams per liter of the particulate carbon adsorbent or higher.

11. The carbon adsorbent storage and dispensing system of claim 1 , wherein the fluid is an arsine gas and the size of the particles of the particulate carbon adsorbent is at or below about 0.5 mm but no less than 0.15 mm with a substantially microporous network defined, at least in part, by the VSA equal to or greater than about 840m2 of microporous surface area per cc of the packed volume of the vessel, and further wherein the particulate carbon adsorbent is characterized by a deliverable capacity of the arsine to be greater than 210 grams of the arsine gas per liter of the particulate carbon adsorbent.

12. The carbon adsorbent storage and dispensing system of claim 1 , wherein the fluid is an arsine gas that is adsorbed onto the particulate carbon adsorbent with a deliverable capacity of greater than 210 grams of the arsine gas per liter of the particulate carbon adsorbent.

13. The carbon adsorbent storage and dispensing system of claim 1 , wherein the VSA of the particulate carbon adsorbent has 900 m2 or greater of surface area per cc of the vessel.

14. The carbon adsorbent storage and dispensing system of claim 1 , wherein the particulate carbon adsorbent is substantially microporous.

15. The carbon adsorbent storage and dispensing system of claim wherein said vessel is configured to be loaded into a gas cabinet.

16. The carbon adsorbent storage and dispensing system of claim 1 , wherein the particulate carbon adsorbent comprises particles that are substantially spherical shaped.

17. The carbon adsorbent storage and dispensing system of claim 1 , wherein the particulate carbon adsorbent comprises a packing density between 0.45 and 0.70 grams of the particulate carbon adsorbent per cc of the packed volume of the vessel.

18. The carbon adsorbent storage and dispensing system of claim 1 , wherein the VSA is greater than about 800 and equal to or less than 950 m2 of porous surface area per cc of the packed volume of the vessel.

19. The carbon adsorbent storage and dispensing system of claim 1 wherein the particulate carbon adsorbent is composed of substantially spherical particles.

20. The carbon adsorbent storage and dispensing system of claim 1 , wherein the particulate carbon adsorbent further comprising a sum of mesopores and macropores less than 10 vol % based on a total pore volume of solid pieces of the particulate carbon adsorbent as measured by mercury porosimetry.

21. A carbon adsorbent storage and dispensing system comprising a vessel and a particulate carbon adsorbent disposed within an interior volume of the vessel, said particulate carbon adsorbent comprising a synthetic polymer-based material, the particulate carbon adsorbent further comprising particles having a particle size at or below about 0.5 mm but no less than 0.15 mm, the particulate carbon adsorbent further having a volumetric surface area (VSA) therewithin of greater than about 800 m2 of porous surface area per cc of a packed volume of the vessel, the carbon adsorbent further configured to adsorb arsine that is stored at a storage pressure of less than 1 bar at 20 deg C, wherein said particulate carbon adsorbent is characterized by a dispensing capacity of 210 or more grams of the arsine per liter of the particulate carbon adsorbent.

Assignees

• Stephenson Neil A
• Heiderman Douglas C
• Sinha Ashwini K
• Masin Rachael A
• Swindlehurst Garrett R
• Hoover Cynthia A
• Kane William S
• Praxair Technology Inc

Inventors

• Stephenson Neil A
• Heiderman Douglas C
• Sinha Ashwini K
• Masin Rachael A
• Swindlehurst Garrett R
• Hoover Cynthia A
• Kane William S

Classifications

• Y02E60/32

  Hydrogen storage · CPC title

• B01J20/28064

  being in the range 500-1000 m2/g · CPC title

• B01D53/04

  with stationary adsorbents {(B01D53/025 takes precedence)} · CPC title

• B01J20/28019

  Spherical, ellipsoidal or cylindrical · CPC title

• B01J20/3208

  Polymeric carriers, supports or substrates · CPC title