High performance immobilized liquid membrane for carbon dioxide separations
AssigneeThe United States of America as represented by the Administrator of the National Aeronautics and Space Administration
InventorClyde F. Parrish
Life of this patent
Estimating the term…
Abstract
An immobilized liquid membrane has a substrate. A plurality of capsules is disposed on the substrate. Each of the capsules is permeable to a first gas of a mixture of gasses comprising the first gas and a second gas. Each of the capsules is substantially impermeable to the second gas. A liquid is disposed in each of the capsules that is permeable to the first gas and substantially impermeable to the second gas.
Claims26
A method of separating gasses, the method comprising:
- passing a first gas of a mixture of gasses comprising the first gas and a second gas through each of a plurality of capsules disposed on a porous substrate, wherein each of the capsules comprises:
- a shell that is permeable to the first gas and substantially impermeable to the second gas;
- and
- a liquid contained within the shell that is permeable to the first gas and substantially impermeable to the second gas;
- and
- passing the first gas through the porous substrate wherein the porous substrate is permeable to the first gas and substantially impermeable to the second gas.
An immobilized liquid membrane comprising:
- a substrate;
- a plurality of capsules disposed on the substrate, each of the capsules permeable to a first gas of a mixture of gasses comprising the first gas and a second gas, each of the capsules substantially impermeable to the second gas;
- and
- a liquid disposed in each of the capsules that is permeable to the first gas and substantially impermeable to the second gas.
An immobilized liquid membrane capable of separating carbon dioxide from at least one other gas in mixture therewith, the immobilized liquid membrane comprising:
- a porous substrate of a material that is permeable to the carbon dioxide and substantially impermeable the at least one other gas;
- a plurality of capsules disposed on the substrate, each of the capsules permeable to the carbon dioxide and substantially impermeable the at least one other gas;
- and
- a liquid disposed in each of the capsules that is permeable to the carbon dioxide and substantially impermeable the at least one other gas.
A method for manufacturing an immobilized liquid membrane, the method comprising:
- encapsulating a liquid in each of a plurality of capsules, each of the capsules and the liquid permeable to a first gas of a mixture of gasses comprising the first gas and a second gas, each of the capsules and the liquid substantially impermeable to the second gas;
- disposing the liquid-containing capsules on a porous substrate;
- permeating the porous substrate and the liquid-containing capsules with a monomer;
- and
- polymerizing the monomer to chemically bond the capsules to each other and the porous substrate.
A method for manufacturing an immobilized liquid membrane, the method comprising:
- encapsulating a liquid in each of a plurality of microcapsules, each of the microcapsules and the liquid permeable to a first gas of a mixture of gasses comprising the first gas and a second gas, each of the capsules and the liquid substantially impermeable to the second gas;
- disposing the liquid-containing microcapsules on a porous substrate;
- exposing the porous substrate and the liquid-containing microcapsules to vapors of an ultraviolet-light sensitive monomer;
- and
- exposing the porous substrate and the liquid-containing microcapsules to ultraviolet light to initiate polymerization of the monomer to chemically bond the microcapsules to each other and the porous substrate.
Dependencies are inferred from the claim text.