Dynamic solvent effect on the kinetics of the inner-sphere reduction of cobalt(III) anchored to a mercury electrode in mixtures of water with an organic solvent

1993 ◽  
Vol 354 (1-2) ◽  
pp. 209-222 ◽  
Author(s):  
Jan S. Jaworski ◽  
Zerihun Kebede
Keyword(s):  
Organic Solvent ◽  
Solvent Effect ◽  
Mercury Electrode ◽  
Dynamic Solvent Effect ◽  
Inner Sphere ◽  
Kinetics Of

Electrode kinetics of the system V(III)/V(II) in aqueous dimethylsulphoxide

1991 ◽  
Vol 56 (1) ◽  
pp. 90-95 ◽  
Author(s):  
Libuše Kišová ◽  
Libor Reichstädter ◽  
Jaro Komenda
Keyword(s):  
Organic Solvent ◽  
Double Layer ◽  
Rate Constants ◽  
Electrode Surface ◽  
Reaction Rate ◽  
Mercury Electrode ◽  
Electrode Reaction ◽  
Electrode Kinetics ◽  
Kinetics Of ◽  
Lower Basicity

The rate constants for the reduction of V(III) and oxidation of V(II) were measured on a mercury electrode in water and water-dimethylsulphoxide mixtures. Their dependance on the concentration of DMSO differs from that in mixtures of water with an organic solvent of lower basicity. This can be attributed to the existence of different solvates of vanadium in solutions and to different values of the rate constant for these solvates on the electrode surface at different coverages with the organic component. The influence of DMSO both in the primary solvation sphere and in the electrode double layer on the electrode reaction rate is discussed.

Kinetics of Ion-Pair Effect of Aquation of Bromopentaammine Cobalt(III) Complex in Different Dicarboxylate Media

2011 ◽  
Vol 324 ◽  
pp. 166-169 ◽  
Author(s):  
Farah Zeitouni ◽  
Gehan El-Subruiti ◽  
Ghassan Younes ◽  
Mohammad Amira
Keyword(s):  
Free Energy ◽  
Solvent Effect ◽  
Compensation Effect ◽  
Ion Pairing ◽  
Reaction Rates ◽  
Ion Pair ◽  
Free Energy Of Activation ◽  
Different Types ◽  
Different Temperatures ◽  
Kinetics Of

The rate of aquation of bromopentaammine cobalt(III) ion in the presence of different types of dicarboxylate solutions containing tert-butanol (40% V/V) have been measured spectrophotometrically at different temperatures (30-600°C) in the light of the effects of ion-pairing on reaction rates and mechanism. The thermodynamic and extrathermodynamic parameters of activation have been calculated and discussed in terms of solvent effect on the ion-pair aquation reaction. The free energy of activation ∆Gip* is more or less linearly varied among the studied dicarboxylate ion-pairing ligands indicating the presence of compensation effect between ∆Hip* and ∆Sip*. Comparing the kip values with respect of different buffers at 40% of ter-butanol is introduced.

Solvent effect on the kinetics of the hydrogenation of n-butyl levulinate to γ-valerolactone

2021 ◽  
Vol 231 ◽  
pp. 116315
Author(s):  
Sarah Capecci ◽  
Yanjun Wang ◽  
Valeria Casson Moreno ◽  
Christoph Held ◽  
Sébastien Leveneur
Keyword(s):  
Solvent Effect ◽  
Kinetics Of
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