Galvanostatic electrolysis with current reversal. Case of follow-up chemical reaction leading to electroactive substance after current reversal

1979 ◽  
Vol 44 (6) ◽  
pp. 1869-1876 ◽  
Author(s):  
Oldřich Dračka ◽  
Oldřich Fischer
Keyword(s):  
Substance P ◽  
Chemical Reactions ◽  
Chemical Reaction ◽  
Electrode Reaction ◽  
Galvanostatic Method ◽  
Homogeneous Chemical ◽  
A Current ◽  
Current Reversal

For the galvanostatic method with current reversal, two cases are solved, in which an electroinactive substance M is formed by an irreversible electrode reaction and from this a substance P is formed by a chemical reaction. After a current reversal, P is consumed at the electrode. In one case, the substance P is moreover irreversibly converted to an electroinactive product Z. The corresponding schemes are M → P → Z and M ##e P. The solution is derived both for homogeneous chemical reactions and for reactions of substances accumulated on the electrode. The possibilities of distinguishing these cases from others and determination of the kinetic parameters are discussed.

Possible use of chronopotentiometry at the interface between two immiscible liquid phases to the studies of homogeneous chemical reactions

1985 ◽  
Vol 50 (8) ◽  
pp. 1636-1641
Author(s):  
Emanuel Makrlík
Keyword(s):  
Electron Transfer ◽  
Chemical Reactions ◽  
Transfer Reaction ◽  
Electron Transfer Reaction ◽  
Immiscible Liquid ◽  
Liquid Phases ◽  
Homogeneous Chemical ◽  
The Given ◽  
Galvanostatic Conditions

The theoretical potential-time dependence corresponding to the electron transfer reaction proceeding at the interface between two immiscible liquid phases with the redox pairs O1/R1 in the aqueous (aq) phase and O2/R2 in the non-aqueous (non) phase, that is complicated by the reaction R1(aq) + Z(aq) → O1(aq) in the aqueous phase, has been derived under the galvanostatic conditions. Moreover, a method for the determination of the formal rate constant kf for the given homogeneous chemical reaction is proposed.

scholarly journals Acceleration of Lipid Reproduction by Emergence of Microscopic Motion

2020 ◽  
Author(s):  
Dhanya Babu ◽  
Robert Scanes ◽  
Rémi Plamont ◽  
Alexander Ryabchun ◽  
Federico Lancia ◽  
...  
Keyword(s):  
Organic Matter ◽  
Chemical Reactions ◽  
Chemical Reaction ◽  
The Self ◽  
Heterogeneous Environments ◽  
Droplet Motion ◽  
Chemical Systems ◽  
Bond Forming ◽  
Molecular Scale ◽  
A Current

<p>Self-reproducing chemical systems are essential for organic matter to reproduce, move and grow. In artificial settings, chemical reactions can show rich dynamics and auto-catalytic characteristics, however achieving higher order functionality from self-reproducing chemical systems remains a current challenge. Here, we show that <a></a><a>self-reproducing lipids can initiate, sustain and accelerate the movement of microscopic oil droplets in water and, in return, the chemotactic movement of these droplets significantly accelerates the autocatalytic production of the lipids</a>. As droplet motion accelerates the chemical reaction through active chemotactic movement, a reciprocal, two-way interplay is established across length scales, between bond-forming chemistry at the molecular scale, and droplet motility at the near macroscopic level. This chemo-motile coupling between the self-reproducing chemistry of lipids and the microscopic movement of droplets offers new means of performing work and catalysis in micro-heterogeneous environments. </p> <p> <br></p>

scholarly journals Computational Study of Chemical Reactions During Heat and Mass Transfer in in Magnetized Partially Ionized Nano-Liquid

2018 ◽  
Author(s):  
M. Nawaz ◽  
Shafia Rana
Keyword(s):  
Chemical Reactions ◽  
Chemical Reaction ◽  
Computational Study ◽  
Heterogeneous Chemical Reaction ◽  
Ion Collisions ◽  
Heterogeneous Chemical ◽  
Homogeneous Chemical ◽  
Partially Ionized ◽  
Chemically Reacting ◽  
Heterogeneous Chemical Reactions

Homogeneous and heterogeneous chemical reactions in partially ionized magneto-nano-liquid are investigated theoretically using finite element method (FEM). The effects of ions and electrons collisions on the transport of heat and mass are analyzed for both the cases of heterogeneous and homogeneous chemical reactions. The simultaneous effects of dispersion of nanosized particles in partially ionized nano-liquid in the presence of magnetic field are also investigated. Through numerical experiments, it is noted that the temperature of partially ionized nano-liquid increases when electrons collision rate and ion collisions are increased. The transport rate of reacting species decreases when heterogeneous and homogeneous chemical reactions strengths are increased. It is also observed that the effect of electron collisions on the flow in y-direction is the same to that of ion collisions on the flow in y-direction. Homogeneous and heterogeneous chemical reactions have similar effects on concentration of chemically reacting species in qualitative sense. However, in quantitative sense, homogeneous chemical reaction has more significant effect on the concentration reacting species as compared to heterogeneous chemical reaction.

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