A First Course in Ion Permeable MembranesElectrochemical Consultancy, 1997 - 255 pagine |
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Pagina 26
... fixed ionic groups while the selectivity is assisted by the crosslinking which limits the swelling and water content of the membrane phase . The stability and favourable physical properties of the perfluorinated membranes result from ...
... fixed ionic groups while the selectivity is assisted by the crosslinking which limits the swelling and water content of the membrane phase . The stability and favourable physical properties of the perfluorinated membranes result from ...
Pagina 86
... group ( or Na + cation ) , it can be seen that the difference lies almost entirely in the number of fixed ionic groups , ie . the ion exchange capacity , in the two types of polymer . In all polymers there are about 10 H2O molecules per ...
... group ( or Na + cation ) , it can be seen that the difference lies almost entirely in the number of fixed ionic groups , ie . the ion exchange capacity , in the two types of polymer . In all polymers there are about 10 H2O molecules per ...
Pagina 103
... fixed ionic groups would be expected to be similar to that of CF3COOH , ca. 0.3 . In practice the carboxylate membranes lose conductivity at pH < 4 and this is attributed to protonation of the carboxylate groups . This again implies ...
... fixed ionic groups would be expected to be similar to that of CF3COOH , ca. 0.3 . In practice the carboxylate membranes lose conductivity at pH < 4 and this is attributed to protonation of the carboxylate groups . This again implies ...
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A First Course in Ion Permeable Membranes Thomas A. Davis,J. David Genders,Derek Pletcher Visualizzazione estratti - 1997 |
Parole e frasi comuni
amine anion anion and cation anode anolyte applications aqueous domains aqueous solution back migration bipolar membrane carboxylate polymer cathode catholyte cation exchange membrane cation permeable membrane cell voltage charge Chem chemical chemistry chlor-alkali chlor-alkali industry chloride co-ions commercial membranes concentration conductivity counter ions crosslinking current density current efficiency depleting determined diffusion coefficient dilute divinylbenzene electrical Electrochem electrodialysis stack electrolyte solution Electrosynthesis equation equivalent weight example Figure fixed ionic groups fluorocarbon flux gradient H.L. Yeager H₂ H₂O Hence hydration increase interface ion exchange ion exchange capacity ion permeable membranes Ionomer layer manufacture membrane pairs membrane polymer Membrane Sci membrane surface metal mole molecules monomers NaCl Nafion NaOH Neosepta oxidation perfluorinated membranes perfluorinated polymers perfluorinated sulfonate pretreatment properties proton resistance salt splitting sodium hydroxide sodium sulfate species stability stream structure styrene/divinylbenzene copolymers sulfonate sulfonate polymer sulfuric acid temperature transport number water content