Anodic oxidation of saturated hydrocarbons. Mechanistic study

1969 ◽  
Vol 73 (2) ◽  
pp. 427-434 ◽  
Author(s):  
John O'M. Bockris ◽  
E. Gileadi ◽  
G. E. Stoner
Keyword(s):  
Anodic Oxidation ◽  
Mechanistic Study ◽  
Saturated Hydrocarbons

Anodic Oxidation of Ethylene Glycol on Platinum: a Mechanistic Study

1971 ◽  
Vol 49 (1) ◽  
pp. 78-88 ◽  
Author(s):  
Ashok K. Vijh
Keyword(s):  
Ethylene Glycol ◽  
Anodic Oxidation ◽  
Mechanistic Study ◽  
Ph Effects ◽  
Product Analysis ◽  
Adsorbed Species ◽  
Rate Determining Step ◽  
State Potential ◽  
Electrode Coverage ◽  
Steady State Potential

Anodic oxidation of ethylene glycol (EG) has been examined on platinum in 1 N H2SO4 by means of potentiostatic and potentiodynamic techniques. Experimental results consist of steady-state, potential-current relationships, reaction order derivatives, inhibition inflections, potentiodynamic profiles, and product analysis. Reaction mechanism has been proposed by combining these results with the previous information on the adsorption of EG on platinum, and on the pH effects in the anodic oxidation of EG. An analysis of these data has been presented in terms of kinetics under both Langmuir and Temkin conditions of electrode coverage. Inhibition inflections have been interpreted in terms of the kinetic theory of passivation effects proposed by Gilroy and Conway. It has been suggested that a chemical step of the type Pt.EG + Pt.OH → Pt.R + H2O + Pt is the likely rate-determining-step (r.d.s.). The data indicate that quasi-equilibria prior to the r.d.s. are probably different in the ascending and descending direction of potentials (on the potential–current curves), owing to the presence of different extents of oxygenated (Pt.OH or Pt.O) adsorbed species and the associated effects of coverage on kinetics.

A mechanistic study on the anodic oxidation of 1,1-dimethylallene (DMA)

1983 ◽  
Vol 149 (1-2) ◽  
pp. 57-69 ◽  
Author(s):  
Gregory Ginzburg ◽  
Baruch Zinger ◽  
James Y. Becker
Keyword(s):  
Anodic Oxidation ◽  
Mechanistic Study

A mechanistic study of borohydride anodic oxidation

2011 ◽  
Vol 170 (1) ◽  
pp. 99-109 ◽  
Author(s):  
Kangli Wang ◽  
Juntao Lu ◽  
Lin Zhuang
Keyword(s):  
Anodic Oxidation ◽  
Mechanistic Study

Mechanistic study of proliferation induced by Angelica sinensis in gastric epithelial cells

2001 ◽  
Vol 120 (5) ◽  
pp. A145-A145
Author(s):  
C CHO ◽  
Y YE ◽  
E LIU ◽  
V SHIN ◽  
N SHAM
Keyword(s):  
Epithelial Cells ◽  
Mechanistic Study ◽  
Angelica Sinensis ◽  
Gastric Epithelial Cells

Mechanistic study on the cardioprotective and chemosensitizing effects of a novel danshensu derivative

Planta Medica ◽  
2014 ◽  
Vol 80 (16) ◽  
Author(s):  
L Wang ◽  
L Shan ◽  
G Cui ◽  
Y Chen ◽  
J li ◽  
...  
Keyword(s):  
Mechanistic Study

Liquid Crystal Trimers Incorporating Saturated Isosteres of Benzene and Exhibiting Modulated Nematic Phases

2019 ◽  
Author(s):  
Adam Al-Janabi ◽  
Richard Mandle
Keyword(s):  
Liquid Crystal ◽  
Helical Structure ◽  
Molecular Shape ◽  
Saturated Hydrocarbons ◽  
Fluid System ◽  
Structural Requirement ◽  
Disubstituted Benzene ◽  
Bona Fide ◽  
Nematic Phases ◽  
Bend Angles

<p>The nematic twist-bend (N<sub>TB</sub>) liquid crystal phase possesses a local helical structure with a pitch length of a few nanometres and is the first example of spontaneous symmetry breaking in a fluid system. All known examples of the N­<sub>TB­</sub> phase occur in materials whose constituent mesogenic units are aromatic hydrocarbons. It is not clear if this is due to synthetic convenience or a <i>bona fide</i> structural requirement for a material to exhibit this phase of matter. In this work we demonstrate that materials consisting largely of saturated hydrocarbons could also give rise to this mesophase. Furthermore, replacement of 1,4-disubstituted benzene with <i>trans</i> 1,4-cyclohexane or even 1,4-cubane does not especially alter the transition temperatures of the resulting material nor does it appear to impact upon the heliconical tilt angle, suggesting the local structure of the phase is unperturbed. Calculating the probability distribution of bend angles reveals that the choice of isosteric group has little impact on the overall molecular shape, demonstrating the shape-driven nature of the N<sub>TB</sub> phase. </p>

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