Facilitated CO2 transport membrane, method for producing same, resin composition for use in method for producing same, CO2 separation module and method and apparatus for separating CO2
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B01D-053/22
B01D-069/14
B01D-071/38
B01D-071/40
B01D-061/38
B01D-063/06
C08F-230/00
B01D-067/00
B01D-071/80
출원번호
US-0780965
(2014-03-24)
등록번호
US-9833746
(2017-12-05)
우선권정보
JP-2013-073644 (2013-03-29)
국제출원번호
PCT/JP2014/058047
(2014-03-24)
국제공개번호
WO2014/157069
(2014-10-02)
발명자
/ 주소
Okada, Osamu
Hanai, Nobuaki
Yan, Peng
Miyata, Junya
Nakasuji, Takehiro
Sugiyama, Hayato
출원인 / 주소
Renaissance Energy Research Corporation
대리인 / 주소
Haynes Beffel & Wolfeld LLP
인용정보
피인용 횟수 :
0인용 특허 :
6
초록▼
Provided is a facilitated CO2 transport membrane having improved CO2 permeance and improved CO2 selective permeability. The facilitated CO2 transport membrane includes a separation-functional membrane comprising a hydrophilic polymer gel membrane which contains a CO2 carrier and a CO2 hydration cata
Provided is a facilitated CO2 transport membrane having improved CO2 permeance and improved CO2 selective permeability. The facilitated CO2 transport membrane includes a separation-functional membrane comprising a hydrophilic polymer gel membrane which contains a CO2 carrier and a CO2 hydration catalyst, wherein the hydrophilic polymer is a copolymer including a first structural unit derived from an acrylic acid cesium salt or an acrylic acid rubidium salt and a second structural unit derived from vinyl alcohol. More preferably, the CO2 hydration catalyst has catalytic activity at a temperature of 100° C. or higher.
대표청구항▼
1. A facilitated CO2 transport member comprising: a separation-functional membrane, the membrane being a gel membrane of a hydrophilic polymer, the hydrophilic polymer comprising a CO2 carrier and a CO2 hydration catalyst, wherein the hydrophilic polymer is a copolymer comprising a first structural
1. A facilitated CO2 transport member comprising: a separation-functional membrane, the membrane being a gel membrane of a hydrophilic polymer, the hydrophilic polymer comprising a CO2 carrier and a CO2 hydration catalyst, wherein the hydrophilic polymer is a copolymer comprising a first structural unit represented by Chemical Formula (1) shown below, where M represents cesium or rubidium, and a second structural unit represented by Chemical Formula (2) shown below, whereinthe copolymer comprises a third structural unit selected from a group consisting of a structural unit derived from a methacrylic acid alkyl ester having an alkyl group of 1 to 16 carbon atoms, a structural unit derived from a maleic acid dialkyl ester having an alkyl group of 1 to 16 carbon atoms, a structural unit derived from a fumaric acid dialkyl ester having an alkyl group of 1 to 16 carbon atoms, and a structural unit derived from an itaconic acid dialkyl ester having an alkyl group of 1 to 16 carbon atoms, and whereinthe CO2 hydration catalyst has catalytic activity at a temperature of 100° C. or higher and a melting point of 200° C. or higher 2. The facilitated CO2 transport member according to claim 1, wherein the CO2 hydration catalyst is soluble in water. 3. The facilitated CO2 transport member according to claim 1, wherein the CO2 hydration catalyst comprises at least one of a tellurous acid compound, a selenious acid compound, an arsenious acid compound, and an orthosilicic acid compound. 4. The facilitated CO2 transport member according to claim 1, wherein a content of the second structural unit in the hydrophilic polymer is from 1 mol % to 90 mol % with respect to the total content of the first and second structural units. 5. The facilitated CO2 transport member according to claim 1, wherein the CO2 carrier comprises at least one of an alkali metal carbonate, an alkali metal bicarbonate, and an alkali metal hydroxide. 6. The facilitated CO2 transport member according to claim 5, wherein an alkali metal included in one of the alkali metal carbonate, the alkali metal bicarbonate, and the alkali metal hydroxide is cesium or rubidium. 7. The facilitated CO2 transport member according to claim 1, further comprising a hydrophilic porous membrane, wherein the separation-functional membrane is supported by the hydrophilic porous membrane. 8. A method for producing the facilitated CO2 transport member according to claim 1, the method comprising the steps of: coating a porous membrane with a coating liquid in which the hydrophilic polymer, the CO2 carrier, the CO2 hydration catalyst, and a medium containing water are included; andremoving the medium from a resultant coating to produce the separation-functional membrane in the form of a gel. 9. A CO2 separating method comprising the steps of: supplying a CO2-containing mixed gas to the facilitated CO2 transport member according to claim 1; andseparating from the mixed gas the CO2 having permeated the facilitated CO2 transport member. 10. A CO2 separation membrane module comprising the facilitated CO2 transport member according to claim 1. 11. A CO2 separation apparatus comprising: the facilitated CO2 transport member according to claim 1;a first feeding port, a second feeding port, a first discharge port, and a second discharge port, wherein:the first feeding port is configured to feed a gas from a source of gas, including a CO2-containing mixed gas, into a supply side of the facilitated CO2 transport member;the second feeding port is configured to feed a sweep gas into a permeate side of the facilitated CO2 transport member;the first discharge port is configured to discharge a CO2-separated source gas from the supply side of the facilitated CO2 transport member; andthe second discharge port is configured to discharge a CO2-containing permeate gas from the permeate side of the facilitated CO2 transport member. 12. A resin composition comprising: a CO2 carrier;a CO2 hydration catalyst; anda copolymer comprising a first structural unit represented by Chemical Formula (1) shown below, where M represents cesium or rubidium, and a second structural unit represented by Chemical Formula (2) shown below, whereinthe copolymer comprises a third structural unit selected from a group consisting of a structural unit derived from a methacrylic acid alkyl ester having an alkyl group of 1 to 16 carbon atoms, a structural unit derived from a maleic acid dialkyl ester having an alkyl group of 1 to 16 carbon atoms, a structural unit derived from a fumaric acid dialkyl ester having an alkyl group of 1 to 16 carbon atoms, and a structural unit derived from an itaconic acid dialkyl ester having an alkyl group of 1 to 16 carbon atoms, and whereinthe CO2 hydration catalyst has catalytic activity at a temperature of 100° C. or higher and a melting point of 200° C. or higher 13. The resin composition according to claim 12, wherein the CO2 hydration catalyst is soluble in water. 14. The resin composition according to claim 12, wherein the CO2 hydration catalyst comprises an oxo acid compound. 15. The resin composition according to claim 12, wherein the CO2 hydration catalyst comprises at least one of a tellurous acid compound, a selenious acid compound, an arsenious acid compound, and an orthosilicic acid compound. 16. The resin composition according to claim 12, wherein a content of the second structural unit is from 1 mol % to 90 mol % with respect to the total content of the first and second structural units. 17. The resin composition according to claim 12, wherein the CO2 carrier comprises at least one of an alkali metal carbonate, an alkali metal bicarbonate, and an alkali metal hydroxide. 18. The resin composition according to claim 17, wherein an alkali metal included in one of the alkali metal carbonate, the alkali metal bicarbonate, and the alkali metal is cesium or rubidium. 19. The resin composition according to claim 12, wherein a content of the CO2 carrier is from 20% by weight to 90% by weight with respect to the total weight of the CO2 carrier and the copolymer. 20. The resin composition according to claim 12, wherein the number of moles of the CO2 hydration catalyst is at least 0.02 times the number of moles of the CO2 carrier.
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