Moisture and volatile organic compound content measuring

Patent metadata

Field	Value
Publication number	US-11779916-B2
Application number	US-202117474565-A
Country	US
Kind code	B2
Filing date	Sep 14, 2021
Priority date	Nov 30, 2018
Publication date	Oct 10, 2023
Grant date	Oct 10, 2023

Abstract

A thermo-gravimetric analysis system includes a chamber having an interior; and a sample crucible connected to and inside of the chamber, the sample crucible configured to hold a sample material. The system further includes a reference crucible connected to and inside of the chamber; and a metal organic framework (MOF) crucible connected to and inside of the chamber, separate from the sample crucible, the MOF crucible including an MOF material.

First claim

What is claimed is:

1. A system comprising:
a first chamber;
a metal organic framework (MOF) crucible connected to and inside of the first chamber, the MOF crucible including an MOF material;
a first reference crucible connected to and inside of the first chamber;
an inlet duct connected to the first chamber;
an inlet valve positioned in the inlet duct;
a pump configured to draw fluid into the first chamber through the duct;
an outlet duct connected to the first chamber;
an outlet valve positioned in the outlet duct;
a second chamber connected to the inlet duct;
a sample crucible connected to and inside of the second chamber, the sample crucible configured to hold a sample material; and
a second reference crucible connected to and inside of the second chamber.

2. The system of claim 1 , wherein the MOF material is configured to sorb a water material.

3. The system of claim 1 , wherein the MOF material is configured to sorb a volatile organic compound.

4. The system of claim 1 , wherein the MOF material is configured to sorb a plasticizer material.

5. The system of claim 1 , wherein the sample crucible, the first reference crucible, the second reference crucible, and the MOF crucible are of the same design and materials.

6. The system of claim 1 , further comprising:
a processor configured to calculate a first change in mass of the MOF material and a second change in mass of the sample material.

7. The system of claim 1 , further comprising:
a cooler for cooling the first chamber; and
a heater for heating the second chamber.

8. A system comprising:
a first chamber;
a metal organic framework (MOF) crucible connected to and inside of the first chamber, the MOF crucible including an MOF material;
an inlet duct connected to the first chamber;
a second chamber connected to the inlet duct;
a sample crucible connected to and inside of the second chamber, the sample crucible configured to hold a sample material; and
a reference crucible connected to and inside of the second chamber.

9. The system of claim 8 , wherein the MOF material is configured to sorb a water material.

10. The system of claim 8 , wherein the MOF material is configured to sorb a volatile organic compound.

11. The system of claim 8 , wherein the MOF material is configured to sorb a plasticizer material.

12. The system of claim 8 , wherein the sample crucible, the reference crucible, and the MOF crucible are of the same design and materials.

13. The system of claim 8 , further comprising:
an inlet valve positioned in the inlet duct;
a pump configured to draw fluid into the first chamber through the duct; and
an outlet duct connected to the first chamber.

14. The system of claim 8 , further comprising:
a processor configured to calculate a first change in mass of the MOF material and a second change in mass of the sample material.

15. The system of claim 8 , further comprising:
a cooler for cooling the first chamber; and
a heater for heating the second chamber.

16. A method comprising:
loading a first chamber with a sample material that comprises a target chemical;
sealing the first chamber;
loading a second chamber with a metal organic framework (MOF) material that is configured to sorb the target chemical;
sealing the second chamber;
heating the first chamber;
exposing the MOF material to fluid from the first chamber; and
measuring a mass of the MOF material.

17. The method of claim 16 , wherein the target chemical is selected from the group consisting of: a water material, a volatile organic compound, and a plasticizer material.

18. The method of claim 16 , wherein exposing the MOF material to fluid from the first chamber comprises creating a pressure differential between the first chamber and the second chamber to urge fluid from the first chamber to move into the second chamber.

19. The method of claim 18 , wherein measuring the mass of the MOF material comprises resealing the second chamber.

Assignees

• IBM

Inventors

• Campbell Eric J
• Czaplewski-Campbell Sarah K
• Kobilka Brandon M
• King Scott B

Classifications

• B01L3/04 Primary

  Crucibles · CPC title

• B01L1/02

  Air-pressure chambers; Air-locks therefor · CPC title

• B01L3/565

  Seals · CPC title

• B01L3/567

  Valves, taps or stop-cocks · CPC title

• B01L7/00

  Heating or cooling apparatus (autoclaves B01J3/04); Heat insulating devices · CPC title