Diffusion of aniline through perfluorosulfonate ion exchange membrane

Ogumi, Zempachi; Toyama, Kiyoshi; Takehara, Zen‐ichiro; Katakura, Katsumi; Inuta, Shusei

doi:10.1016/0376-7388(92)87023-q

Cited by 18 publications

(15 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Donnan dialysis is a membrane-based equilibrium process and is different from the classical dialysis technique; its theory and principle are reviewed in textbooks [13,14]. Many studies on the diffusion of ions and molecules through ion-exchange membranes have been reported [15][16][17][18][19][20]. Although Donnan dialysis has slow kinetics compared to electrodialysis, it has some advantages, i.e.…”

Section: Introductionmentioning

confidence: 99%

Removal of fluoride from water using anion-exchange membrane under Donnan dialysis condition

Tor

2007

Journal of Hazardous Materials

120

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

Removal of fluoride from water using anion-exchange membrane under Donnan dialysis condition

Tor

2007

Journal of Hazardous Materials

120

View full text Add to dashboard Cite

“…It is known that in acidic environment aniline exists in the protonated form of phenylammonium ions (PhA + ), which are the counterions for sulfocationite membrane MF-4SC. Thus, the monomer easily enters the bulk of the membrane and accumulates by ion exchange with the protons of sulfonic groups and by non-exchange sorption in the vicinity of the ether groups of lateral chains of the fluoroethylene matrix [12]. This process is accompanied by desorption of water from the bulk of the membrane, which leads to a reduction of its water capacity [13].…”

Section: Matrix Synthesis Of Polyanilinementioning

confidence: 97%

Effects of mixed conductivity of nanocomposite membranes MF-4SC/PANI

Фалина

Березина

Sytcheva

et al. 2011

J Solid State Electrochem

View full text Add to dashboard Cite

Changes in the conducting and hydrophilic properties of composites MF-4SC/polyaniline (PAni) under conditions of prolonged synthesis have been studied. A maximum of PAni content of about 0.20 by weight, which can be incorporated into the matrix of MF-4SC under these conditions of synthesis, is determined. Percolation behavior of electrical conductivity of the composites after drying was observed. The conductivity of PAni salt inside MF-4SC was estimated within the frames of the percolation model. Using the fibrous cluster model of the membrane and the conductivity data on individual PAni, theoretical assessment of the electrical conductivity of nanocomposite MF-4SC/PAni has been performed. Reasons for a significant reduction in the conductivity of PAni during its integration into the structure of the initial matrix were discussed. A scale of membrane conductivity, reflecting changes in the electrical conductivity of composites at various stages of synthesis, was drawn.

show abstract

“…04855159, the Ministry of Education, Science, and Culture of Japan. Manuscript submitted Oct. 17,1993; revised manuscript received March 15, 1994. Kyoto University assisted in meeting the publication costs of this article.…”

Section: Acknowledgmentmentioning

confidence: 98%

Electrotransportation of Aniline Through a Perfluorosulfonate Ion‐Exchange Membrane

Katakura

Inaba

Toyama

et al. 1994

J. Electrochem. Soc.

Self Cite

View full text Add to dashboard Cite

Transport phenomena of aniline through Na +-, K § and Cs § of a perfluorosulfonate ion-exchange membrane, Nation | 117, under a flow of de current, electrotransportation, were investigated. In each form, an increase in transport number of aniliniumeation was observed in the current density range from 0.3 to 1.3 mA em -2. The transport number of the anilinium cation in Cs § was larger than that expected from the concentration and diffusion coefficient of the anitinium cation in Cs~-form Nafion. These aniline transport phenomena may be attributable to a structural change of Nafion or a decrease in hydrophobic interaction between the anilinium cation and Nation caused by the flow of de current.A commercially available perfluorosulfonate cation-exchange membrane, Nafion, is chemically and thermally stable, and applied to various processes such as electrolytic cells, ~' 2 polymer-electrolyte-membrane fuel cells, 3 sensors, ~ batteries, 5'6 and cells for organic synthesis] Results reported on its structure ~ and transport properties l'~-n reveal that Nation is microscopically separated into two phases: an ionic cluster domain, which contains most of the sulfonate groups, cations, and sorbed water, and a hydrophobic backbone domain similar to that of polytetrafluoroethylene (PTFE), which surrounds the ionic cluster. This characteristic structure gives Nation peculiar and interesting properties in swelling, ion-exchange selectivity, etc.While organic cations reportedly interact strongly with the hydrophobic microdomain in Nafion, 12"is few studies have been reported on the permeation of organic compounds through Nafion. ~4<6 Previously, we have reported the effects of various alkali cations on permeation phenomena of aniline through Nafion in the presence of a concentration gradient across a Nafion membrane) 7 The apparent diffusion coefficients of anilinium cation and neutral aniline were determined, and it was found that they are strongly affected by the water content of the Nafion membrane. However, the permeation behavior of anilinium cation under application of dc current needs clarification. Research on the permeation behavior of organic species under current passage, electrotransportation, gives useful information on the perm selectivity of Nation and hydrophobic interaction between organic species and Nafion. Here, our attention was focused on the eleetrotransportation of aniline through Nation 117 (equivalent weight: EW = 1100). ExperimentalMembrane treatments.--A perfluorosulfonate cationexchange membrane, Nafion 117, was used in this study. Nation samples in H+-form (3 cm in diameter in the dry * Electrochemical Society Active Member. Table I. Composition of source and receiver solutions.state) were pretreated in boiling water for more than 1 h. The sample was then soaked in a source solution shown in Table I for ca. 24 h in the dark at 35~During this treatment, swelling and ion exchange between the Nafion and the source solution were brought into equilibrium.Measuring eeII.--The permeation measurements under ...

show abstract

Diffusion of aniline through perfluorosulfonate ion exchange membrane

Cited by 18 publications

References 22 publications

Removal of fluoride from water using anion-exchange membrane under Donnan dialysis condition

Removal of fluoride from water using anion-exchange membrane under Donnan dialysis condition

Effects of mixed conductivity of nanocomposite membranes MF-4SC/PANI

Electrotransportation of Aniline Through a Perfluorosulfonate Ion‐Exchange Membrane

Contact Info

Product

Resources

About