Facilitated transport of CO2 through various ion exchange membranes prepared by plasma graft polymerization

Matsuyama, Hideto; Teramoto, Masaaki; Sakakura, Hiroshi; Iwai, Kiyoshi

doi:10.1016/0376-7388(96)00072-5

Cited by 57 publications

(35 citation statements)

References 25 publications

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“…Following neutralization with EDA to form EDAH ϩ , facilitated transport of CO 2 with very high selectivity was observed: CO 2 permeance, 7.5 ϫ 10 -7 m 3 m -2 s -1 kPa -1 ; CO 2 /N 2 selectivity, 4700 at 4.8 kPa CO 2 feed pressure. 14,15 With such a high selectivity, these membranes are expected to be effective for the removal of CO 2 from H 2 , but such data have not been reported.…”

Section: Polymeric Facilitated Transport Membranes For Hydrogen Purifmentioning

confidence: 96%

“…14,15 Plasma graft polymerization of acrylic acid gave membranes with higher exchange capacities than those of typical ion-exchange membranes and thus higher CO 2 carrier density and a more highly ionic barrier to H 2 permeation. Following neutralization with EDA to form EDAH ϩ , facilitated transport of CO 2 with very high selectivity was observed: CO 2 permeance, 7.5 ϫ 10 -7 m 3 m -2 s -1 kPa -1 ; CO 2 /N 2 selectivity, 4700 at 4.8 kPa CO 2 feed pressure.…”

Section: Polymeric Facilitated Transport Membranes For Hydrogen Purifmentioning

confidence: 97%

See 1 more Smart Citation

Polymeric Facilitated Transport Membranes for Hydrogen Purification

Hägg¹,

Quinn²

2006

MRS Bull.

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The most widely used method of hydrogen production, steam methane reforming, yields a product stream consisting mainly of hydrogen (H 2 ) and carbon dioxide (CO 2 ). Purification of this product is currently accomplished using amine-based acid gas scrubbers or pressure swing adsorption technology. Membranes are well suited to bulk CO 2 removal and offer a viable alternative to these established technologies. This review considers one type of such membranes, polymeric facilitated transport membranes. These membranes selectively permeate CO 2 by means of a reversible reaction between the gas and the membrane material. In addition, the membrane provides a barrier to H 2 permeation. The result is removal of the CO 2 contaminant and recovery of the H 2 product at high pressure, eliminating the need for recompression prior to use or storage. A wide range of polymeric materials have been investigated, including ion-exchange resins, hydrophilic polymers blended with CO 2 -reactive salts, polyelectrolytes, fixed-site carrier polymers, and biomimetic materials. This review provides a description of the reaction chemistry of facilitated transport, a summary of membrane permselective properties, and suggestions for future research efforts.

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Section: Polymeric Facilitated Transport Membranes For Hydrogen Purifmentioning

confidence: 96%

Section: Polymeric Facilitated Transport Membranes For Hydrogen Purifmentioning

confidence: 97%

Polymeric Facilitated Transport Membranes for Hydrogen Purification

Hägg¹,

Quinn²

2006

MRS Bull.

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“…Nature then and concentration of radicals formed on the surface during the plasma process hence grafting yield vary from polymer to polymer [22]. For example, grafting of acrylic acid onto poly(tetrafluoroethylene) was much less effective than on polyethylene [18]. What is more, all plasma processes are strongly dependent on a reactor geometry and plasma frequency and other plasma processing parameters.…”

Section: Grafting Degreementioning

confidence: 99%

Modification of polysulfone membranes. 2. Plasma grafting and plasma polymerization of acrylic acid

Gancarz¹,

Poźniak

Bryjak

et al. 1999

Acta Polym.

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Polysulfone membranes were modified with acrylic acid using plasma initiated graft polymerization (both in solution and vapor phase) and plasma polymerization. Changes on the surface were monitored by contact angle measurements and FTIR‐ATR technique. Pore size and ultrafiltration properties were also evaluated. Grafting in solution gave as a result hydrophobic membranes with pore size diameter signficantly reduced. Such membranes lost their ultrafiltration properties. Grafting in vapor phase seems to give brush‐like structure. Membranes possess hydrophilic surface and unique filtration properties in basic environment. Plasma polymerization of acrylic acid on the PSU surface creates a layer of material highly reminding pure poly(acrylic acid). Performance of such membranes was also pH‐dependent showing better properties in basic solution.

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“…In 1980 an ion exchange membrane was firstly reported by LeBlanc et al [2] to overcome the problems of SLMs, in which facilitated carriers were kept within the membrane matrix using electrostatic forces and hence the degradation of carriers was minimized. As another approach to fix the carriers, Matsuyama et al [6][7][8] applied plasma technology to introduce the desired functional groups, and obtained membranes which showed remarkably high CO 2 permeability and selectivity over CH 4 and N 2 . Since 1994 Quinn et al [9][10][11][12][13][14] published and patented a series of polyelectrolyte membranes or polyelectrolyte-salt blend membranes for acid gas separation.…”

Section: Introductionmentioning

confidence: 99%