Diffusion coupling in electrolyte solutions. 2. Pseudo-oscillations induced by a pH gradient

1993 ◽  
Vol 97 (19) ◽  
pp. 5019-5023 ◽  
Author(s):  
Jean Pierre Simonin ◽  
Pierre Turq ◽  
Antonio Calado
Keyword(s):  
Electrolyte Solutions ◽  
Ph Gradient ◽  
Diffusion Coupling

Influence of ion-pair formation, and pH gradient, on diffusion -coupling processes

1988 ◽  
Vol 70 (1-2) ◽  
pp. 82
Author(s):  
J.P. Simonin ◽  
J.F. Gaillard ◽  
P. Turq ◽  
E. Soualhia
Keyword(s):  
Ion Pair ◽  
Pair Formation ◽  
Ph Gradient ◽  
Diffusion Coupling ◽  
Ion Pair Formation ◽  
Coupling Processes

scholarly journals Diffusion coupling in multiply associating electrolyte solutions

2016 ◽  
Vol 215 ◽  
pp. 69-76 ◽  
Author(s):  
Jean-Pierre Simonin ◽  
José Miguel Ramos ◽  
José Torres-Arenas
Keyword(s):  
Electrolyte Solutions ◽  
Diffusion Coupling

Diffusion coupling in electrolyte solutions. 1. Transient effects on a tracer ion: sulfate

1988 ◽  
Vol 92 (6) ◽  
pp. 1696-1700 ◽  
Author(s):  
Jean Pierre Simonin ◽  
Jean Francois Gaillard ◽  
Pierre Turq ◽  
Embarek Soualhia
Keyword(s):  
Electrolyte Solutions ◽  
Transient Effects ◽  
Diffusion Coupling

Electrolyte Solutions.

1961 ◽  
Vol 29 (3_4) ◽  
pp. 285-285 ◽  
Author(s):  
A. Weller
Keyword(s):  
Electrolyte Solutions

Structure of Aqueous Monovalent Electrolyte Solutions

2015 ◽  
Vol 60 (12) ◽  
pp. 1218-1223
Author(s):  
N.A. Atamas ◽  
◽  
L.A. Bulavin ◽  
D. Vasyl’eva ◽  
◽  
...  
Keyword(s):  
Electrolyte Solutions

Promoting Nitrogen Electroreduction to Ammonia with Bismuth Nanocrystals and Potassium Cations in Water

2020 ◽  
Author(s):  
Jaecheol Choi ◽  
Hoang-Long Du ◽  
Manjunath Chatti ◽  
Bryan H. R. Suryanto ◽  
Alexandr Simonov ◽  
...  
Keyword(s):  
Electrocatalytic Activity ◽  
Aqueous Electrolyte ◽  
Electrolyte Solutions ◽  
Reduction Reaction ◽  
Nitrogen Reduction ◽  
Aqueous Electrolyte Solutions

We demonstrate that bismuth exhibits no measurable electrocatalytic activity for the nitrogen reduction reaction to ammonia in aqueous electrolyte solutions, contrary to several recent reports on the highly impressive rates of Bi-catalysed electrosynthesis of NH<sub>3</sub> from N<sub>2</sub>.

Microstructure determines water and salt permeation in commercial ion exchange membranes

2018 ◽  
Author(s):  
Ryan Kingsbury ◽  
Shan Zhu ◽  
Sophie Flotron ◽  
Orlando Coronell
Keyword(s):  
Energy Efficiency ◽  
Ion Exchange ◽  
Electrolyte Solutions ◽  
Polymer Chains ◽  
Salt Transport ◽  
Mixing Energy ◽  
Electrochemical Processes ◽  
Highly Correlated ◽  
Salt Diffusion ◽  
Exchange Membrane

Ion exchange membrane (IEM) performance in electrochemical processes such as fuel cells, redox flow batteries, or reverse electrodialysis (RED) is typically quantified through membrane selectivity and conductivity, which together determine the energy efficiency. However, water and co-ion transport (i.e., osmosis and salt diffusion / fuel crossover) also impact energy efficiency by allowing uncontrolled mixing of the electrolyte solutions to occur. For example, in RED with hypersaline water sources, uncontrolled mixing consumes 20-50% of the available mixing energy. Thus, in addition to high selectivity and high conductivity, it is desirable for IEMs to have low permeability to water and salt in order to minimize energy losses. Unfortunately, there is very little quantitative water and salt permeability information available for commercial IEMs, making it difficult to select the best membrane for a particular application. Accordingly, we measured the water and salt transport properties of 20 commercial IEMs and analyzed the relationships between permeability, diffusion and partitioning according to the solution-diffusion model. We found that water and salt permeance vary over several orders of magnitude among commercial IEMs, making some membranes better-suited than others to electrochemical processes that involve high salt concentrations and/or concentration gradients. Water and salt diffusion coefficients were found to be the principal factors contributing to the differences in permeance among commercial IEMs. We also observed that water and salt permeability were highly correlated to one another for all IEMs studied, regardless of polymer type or reinforcement. This finding suggests that transport of mobile salt in IEMs is governed by the microstructure of the membrane, and provides clear evidence that mobile salt does not interact strongly with polymer chains in highly-swollen IEMs. <br>

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