Separation membranes formed from perforated graphene and methods for use thereof
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B01D-071/02
B01D-053/22
B01D-069/12
C10L-003/10
B01D-067/00
B01D-069/02
출원번호
US-0856198
(2015-09-16)
등록번호
US-9610546
(2017-04-04)
발명자
/ 주소
Sinton, Steven W.
Bedworth, Peter V.
Moloney, Padraig
Swett, Jacob L.
출원인 / 주소
LOCKHEED MARTIN CORPORATION
대리인 / 주소
Foley & Lardner LLP
인용정보
피인용 횟수 :
12인용 특허 :
182
초록▼
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. Method
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.
대표청구항▼
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; andat least one membrane of a material other than a two-dimensional material, said membrane being ch
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; andat 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. 2. The composite membrane of claim 1, wherein a net gas separation selectivity for said first gas relative to said second gas is greater than or equal to 100. 3. The composite permeable membrane of claim 1, wherein each of said membranes independently provides separation of said first gas and second gas. 4. The composite permeable membrane of claim 1, wherein at least one of said membranes is an inorganic molecular sieve membrane. 5. The composite permeable membrane of claim 1, wherein each of said membranes is capable of exposure to at least one of (a) a pressure of 500 psi without undergoing mechanical failure and (b) temperatures up to 300 K without undergoing chemical or physical degradation. 6. The composite permeable membrane of claim 1, wherein each of said membranes independently has a thickness selected over the range of 0.1 to 50 microns. 7. The composite permeable membrane of claim 1, wherein each of said at least one layer of perforated permeable two-dimensional material is independently characterized by a thickness selected from the range of 0.3 to 5 nm. 8. The composite permeable membrane of claim 1, wherein each of said at least one layer of perforated permeable two-dimensional material is independently characterized by a plurality of holes independently having cross sectional dimensions less than or equal to 10 angstroms. 9. The composite permeable membrane of claim 1, wherein each of said at least one layer of perforated permeable two-dimensional material independently comprises perforated graphene, a perforated graphene-based material, a perforated transition metal dichalcogenide, perforated molybdenum disulfide, perforated α-boron nitride, silicone, perforated germanene, or a combination thereof. 10. The composite permeable membrane of claim 1, wherein each of said layers of perforated permeable two-dimensional material is independently comprises a perforated permeable graphene-based material. 11. The composite permeable membrane of claim 10, wherein said perforated permeable graphene-based material comprises perforated single-layer graphene, perforated multi-layer graphene or perforated multiple layers of single layer graphene. 12. The composite permeable membrane of claim 1, wherein the first membrane is in physical contact with a first layer of said perforated permeable two-dimensional material. 13. The composite permeable membrane of claim 12, wherein said first layer of said perforated permeable two-dimensional material is provided between, and in physical contact with, said first and second membranes. 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, 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;contacting an external surface of said composite permeable membrane with said first gas and said second gas; andapplying 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. 15. The method of claim 14, wherein methane is said second gas and said first gas is selected from the group consisting of CO2, H2O, H2S or any combination of these and the first gas and the second gas are provided in a natural gas. 16. The method of claim 14, providing a method of N2 purification or CO2 purification. 17. The method of claim 14, providing a method of revitalizing air. 18. The method of claim 14 wherein at least one of said membranes is an inorganic molecular sieve membrane. 19. The composite permeable membrane of claim 1, wherein at least one of a plurality of pores or a surface of the at least one layer of the perforated permeable two-dimensional material is functionalized. 20. The composite permeable membrane of claim 19, wherein the at least one layer of the perforated permeable two-dimensional material is functionalized with moieties of at least one of oxygen, nitrogen, phosphorus, sulfur, fluorine, chlorine, bromide, or iodine.
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