Membranes, methods of making membranes, and methods of separating gases using membranes
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B01D-053/00
B01D-067/00
C08K-003/20
C08K-003/26
C08L-029/04
C08L-071/02
출원번호
US-0164022
(2011-06-20)
등록번호
US-8277932
(2012-10-02)
발명자
/ 주소
Ho, W. S. Winston
출원인 / 주소
The Ohio State University Research Foundation
대리인 / 주소
Calfee, Halter & Griswold LLP
인용정보
피인용 횟수 :
1인용 특허 :
9
초록▼
Membranes, methods of making membranes, and methods of separating gases using membranes are provided. The membranes can include at least one hydrophilic polymer, at least one cross-linking agent, at least one base, and at least one amino compound. The methods of separating gases using membranes can
Membranes, methods of making membranes, and methods of separating gases using membranes are provided. The membranes can include at least one hydrophilic polymer, at least one cross-linking agent, at least one base, and at least one amino compound. The methods of separating gases using membranes can include contacting a gas stream containing at least one of CO2, H2S, and HCl with one side of a nonporous and at least one of CO2, H2S, and HCl selectively permeable membrane such that at least one of CO2, H2S, and HCl is selectively transported through the membrane.
대표청구항▼
1. A non-porous membrane formed from a composition comprising: at least one hydrophilic polymer, at least one cross-linking agent capable of cross-linking the hydrophilic polymer, at least one base, and at least one amino compound selected from the group consisting of a polyamine and an aminoacid sa
1. A non-porous membrane formed from a composition comprising: at least one hydrophilic polymer, at least one cross-linking agent capable of cross-linking the hydrophilic polymer, at least one base, and at least one amino compound selected from the group consisting of a polyamine and an aminoacid salt, wherein the aminoacid salt has the formula: wherein R1, R2, R3, and R4 are hydrogen or hydrocarbon groups having from 1 to 4 carbon atoms, n is an integer ranging from 0 to 4, Am+ is at least one of a cation having a valence of 1 to 3 or an amine cation having the formula: wherein R5 and R6 are hydrogen or hydrocarbon groups having from 1 to 4 carbon atoms, R7 is hydrogen or a hydrocarbon group having from 1 to 4 carbon atoms or an alkyl amine of from 2 to 6 carbon atoms and 1 to 4 nitrogen atoms, y is an integer ranging from 1 to 4, and m is an integer equal to the valence of the cation; wherein said base is selected from the group consisting of potassium hydroxide, sodium hydroxide, lithium hydroxide, triethylamine, N,N-dimethylaminopyridine, hexamethyltriethylenetetraamine, potassium carbonate, sodium carbonate, lithium carbonate, and combinations thereof, andwherein the hydrophilic polymer is selected from the group consisting of polyvinylalcohol, polyvinylacetate, polyethylene oxide, polyvinylpyrrolidone, polyacrylamine, and copolymers thereof. 2. The composition as claimed in claim 1 wherein said at least one amino compound comprises a polyamine selected from the group consisting of polyallylamine, polyethylenimine, poly-N-1,2-dimethylpropylallylamine, poly-N-methylallylamine, poly-N,N-dimethylallylamine, poly-2-vinylpiperidine, and poly-4-vinylpiperidine, and copolymers thereof. 3. The composition as claimed in claim 1 wherein said at least one amino compound comprises polyallylamine. 4. The composition as claimed in claim 1 wherein said at least one amino compound comprises polyethylenimine. 5. The composition as claimed in claim 1 wherein said at least one hydrophilic polymer comprises polyvinylalcohol. 6. The composition as claimed in claim 5 wherein said at least one amino compound comprises polyallylamine. 7. The composition as claimed in claim 5 wherein said at least one amino compound comprises polyethylenimine. 8. The composition as claimed in claim 1 wherein Am+ is a metal cation selected from the group consisting of Groups Ia, IIa, IIIa, and VIII of the Periodic Table of Elements. 9. The composition as claimed in claim 1 wherein said at least one amino compound comprises aminoisobutyric acid-K salt. 10. The composition as claimed in claim 1 wherein said at least one amino compound contains dimethylglycine-K salt. 11. The composition as claimed in claim 1 wherein said at least one amino compound comprises dimethylglycine-Li salt. 12. The composition as claimed in claim 1 wherein said at least one cross-linking agent is selected from the group consisting of formaldehyde, glutaraldehyde, maleic anhydride, glyoxal, divinylsulfone, toluenediisocyanate, trimethylol melamine, terephthalatealdehyde, epichlorohydrin, and vinyl acrylate. 13. The composition as claimed in claim 12 wherein said at least one cross-linking agent comprises foraldehyde. 14. The composition as claimed in claim 1 wherein said at least one cross-linking agent comprises from about 1 to about 40 percent by weight of said composition. 15. The composition as claimed in claim 1 wherein said at least one base comprises from about 1 to about 40 percent by weight of said composition. 16. The composition as claimed in claim 1 wherein said at least one hydrophilic polymer comprises from about 10 to about 90 percent by weight of said composition. 17. The composition as claimed in claim 1 wherein the amino compound comprises from about 10 to about 90 percent by weight of said composition. 18. The composition as claimed in claim 1 wherein said at least one base comprises potassium hydroxide.
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이 특허에 인용된 특허 (9)
Pez Guido P. (Allentown PA) Laciak Daniel V. (Fogelsville PA), Ammonia separation using semipermeable membranes.
Randhava,Surjit; Ho,W. S. Winston; Kao,Richard L.; Camara,Elias H., Dynamic sulfur tolerant process and system with inline acid gas-selective removal for generating hydrogen for fuel cells.
Linder Charles (Rehovot ILX) Perry Mordechai (Petach Tikvah ILX) Kotraro Reuven (Rehovot ILX), Modified polyvinylalcohol containing semipermeable composite membranes, process for their manufacture and their use.
McIlroy, Christopher B.; Harness, John R.; Palla, Nagaraju; Subris, Ronald K.; Van Dyke, Stephen J., Process and apparatus for removing contaminants from a gas stream.
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