Separation membranes formed from perforated graphene and methods for use thereof
First Claim
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1. A composite permeable membrane for separation of a first gas from a second gas;
- said composite permeable membrane comprising;
at least one layer of a perforated permeable two-dimensional material; and
at least one membrane of a material other than a two-dimensional material, said membrane being characterized by a permeability for said first gas greater than or equal to 1 Barrer,wherein said composite permeable membrane is constructed of said at least one layer of the perforated permeable two-dimensional material and said at least one membrane and arranged to provide preferential transport of said first gas relative to said second gas through said at least one membrane and said at least one layer of said perforated permeable two-dimensional material,wherein said at least one membrane and said at least one layer of said perforated permeable two-dimensional material are provided in a stacked multilayer geometry, andwherein said each of said at least one layer of said perforated permeable two-dimensional material provided in said stacked multilayer geometry is independently positioned between first and second adjacent membranes.
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Abstract
Perforated graphene sheets can be used in forming separation membranes. Separation membranes of the present disclosure, which can be used in gas separation processes in some embodiments, can include one or more layers of perforated graphene and one or more layers of another membrane material. Methods for separating a gas mixture can include contacting a gas mixture with the separation membranes, and transiting one or more of the gases through the perforated graphene so as to affect separation.
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Citations
20 Claims
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1. A composite permeable membrane for separation of a first gas from a second gas;
- said composite permeable membrane comprising;
at least one layer of a perforated permeable two-dimensional material; and at least one membrane of a material other than a two-dimensional material, said membrane being characterized by a permeability for said first gas greater than or equal to 1 Barrer, wherein said composite permeable membrane is constructed of said at least one layer of the perforated permeable two-dimensional material and said at least one membrane and arranged to provide preferential transport of said first gas relative to said second gas through said at least one membrane and said at least one layer of said perforated permeable two-dimensional material, wherein said at least one membrane and said at least one layer of said perforated permeable two-dimensional material are provided in a stacked multilayer geometry, and wherein said each of said at least one layer of said perforated permeable two-dimensional material provided in said stacked multilayer geometry is independently positioned between first and second adjacent membranes. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 19, 20)
- said composite permeable membrane comprising;
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14. A method for separating a first gas from a second gas;
- said method comprising the steps of;
providing a composite permeable membrane comprising; at least one layer of a perforated permeable two-dimensional material; at least one membrane of a material other than a two-dimensional material, said membrane being characterized by a permeability for said first gas greater than or equal to 1 Barrer, wherein said at least one membrane and said at least one layer of said perforated permeable two-dimensional material are provided in a stacked multilayer geometry, and wherein said each of said at least one layer of said perforated permeable two-dimensional material provided in said stacked multilayer geometry is independently positioned between first and second adjacent membranes; contacting an external surface of said composite permeable membrane with said first gas and said second gas; and applying a driving force for transport of the first gas across the composite permeable membrane wherein said composite membrane provides preferential transport of said first gas relative to said second gas through said at least one membrane and said at least one layer of perforated permeable two-dimensional material, thereby separating said first gas from said second gas. - View Dependent Claims (15, 16, 17, 18)
- said method comprising the steps of;
Specification