Condensation catalyst systems and methods

Patent metadata

Field	Value
Publication number	US-10647594-B2
Application number	US-201615387194-A
Country	US
Kind code	B2
Filing date	Dec 21, 2016
Priority date	Dec 21, 2016
Publication date	May 12, 2020
Grant date	May 12, 2020

Abstract

A reactor system may comprise a housing; and a condensation catalyst layer within the housing comprising a condensation catalyst comprised of at least one of a base-substituted zeolite, a stannous salt, or a phosphonitrile chloride. The condensation catalyst layer may be configured to catalyze a condensation reaction of a plurality of silane diols in water flowing through the housing into a plurality of siloxanes.

First claim

What is claimed is:

1. A method, comprising:
causing water and a plurality of silane diols to contact a condensation catalyst comprised in a reactor system, wherein the condensation catalyst comprises a base-substituted zeolite; and
reacting the plurality of silane diols with the condensation catalyst to form a plurality of siloxanes.

2. The method of claim 1 , wherein the condensation catalyst comprises ammonium-substituted zeolite.

3. The method of claim 2 , wherein the condensation catalyst further comprises a binder.

4. The method of claim 3 , wherein the binder comprises kaolin and carboxymethylcellulose.

5. The method of claim 1 , further comprising:
condensing the water and a first plurality of siloxanes out of air onto a surface comprising a hydrophilic coating prior to the causing the water and the plurality of silane diols to contact the condensation catalyst; and
forming the plurality of silane diols via a reaction between the hydrophilic coating and the first plurality of siloxanes.

6. The method of claim 5 , further comprising at least one of removing or exchanging ions comprised in the water by contacting the water with an ion exchange resin layer in a fluid treatment system which comprises the reactor system.

7. The method of claim 5 , further comprising capturing the plurality of siloxanes by causing the water to contact at least one of an activated carbon or a synthetic carbon downstream of the condensation catalyst.

8. The method of claim 1 , wherein the condensation catalyst is pelletized.

9. The method of claim 1 , wherein the plurality of silane diols is a plurality of dimethylsilanediol molecules.

10. A fluid treatment system, comprising:
an air conditioner comprising a heat exchanger, wherein the heat exchanger comprises a hydrophilic coating that condenses water and siloxanes out of air, wherein the hydrophilic coating and the siloxanes react to form a plurality of silane diols; and
a reactor system fluidly coupled to the air conditioner downstream of the air conditioner, wherein the water and the plurality of silane diols, from the air conditioner, flow to the reactor system, wherein the reactor system comprises a housing and a condensation catalyst within the housing comprising a base-substituted zeolite, wherein the water and the plurality of silane diols flow through the reactor and contact the condensation catalyst, which catalyzes a condensation reaction of the plurality of silane diols flowing through the housing into a plurality of siloxanes.

11. The fluid treatment system of claim 10 , wherein the condensation catalyst comprises ammonium-substituted zeolite.

12. The fluid treatment system of claim 11 , wherein the condensation catalyst further comprises a binder.

13. The fluid treatment system of claim 12 , wherein the binder comprises kaolin and carboxymethylcellulose.

14. The fluid treatment system of claim 10 , wherein the reactor system further comprises at least one of an activated carbon layer or a synthetic carbon layer in the housing downstream of the condensation catalyst, wherein the at least one of the activated carbon layer or the synthetic carbon layer is configured to capture the plurality of siloxanes.

Assignees

• Hamilton Sundstrand Corp

Inventors

• Steele John W
• Peyton Barbara M
• Rector Tony

Classifications

• B01J29/061

  containing metallic elements added to the zeolite · CPC title

• C02F2101/30

  Organic compounds · CPC title

• B01J31/26

  containing in addition, inorganic metal compounds not provided for in groups B01J31/02 - B01J31/24 · CPC title

• C02F1/283

  using coal, charred products, or inorganic mixtures containing them · CPC title

• C02F1/42

  by ion-exchange (ion-exchange in general B01J) · CPC title