scholarly journals Electropolymerization of Pyrrole and Electrochemical Study of Polypyrrole 4. Electrochemical Oxidation of Non-Conjugated Pyrrole Oligomers.

1999 ◽  
Vol 53 ◽  
pp. 1059-1062 ◽  
Author(s):  
Ming Zhou ◽  
Volker Rang ◽  
Jürgen Heinze ◽  
J. Ch. Abbe ◽  
K. Michelsen ◽  
...  
Keyword(s):  
Electrochemical Oxidation ◽  
Electrochemical Study

scholarly journals Electrochemical study of 4-chloroaniline in a water/acetonitrile mixture. A new method for the synthesis of 4-chloro-2-(phenylsulfonyl)aniline and N-(4-chlorophenyl)benzenesulfonamide

RSC Advances ◽  
2020 ◽  
Vol 10 (52) ◽  
pp. 31563-31569
Author(s):  
Niloofar Mohamadighader ◽  
Mahnaz Saraei ◽  
Davood Nematollahi ◽  
Hamed Goljani
Keyword(s):  
Electrochemical Oxidation ◽  
New Method ◽  
Electrochemical Study ◽  
Oxidation Pathway

Electrochemical oxidation pathway of p-chloroaniline (PCA) in the presence of benzenesulfinic acid (BSA).

Synthesis and Electrochemical Study of 1,1′-Thienyl-Substituted Fused Bis-germatranes with a Core 5c-6e Hyperbond

Synthesis ◽  
2018 ◽  
Vol 50 (18) ◽  
pp. 3679-3685 ◽  
Author(s):  
Vitalijs Romanovs ◽  
Viatcheslav Jouikov ◽  
Jana Spura
Keyword(s):  
Electrochemical Oxidation ◽  
Positive Charge ◽  
Electrochemical Study ◽  
Wave Pulse ◽  
Square Wave ◽  
Cation Radicals ◽  
Dative Bond ◽  
Pulse Voltammetry

Novel fused bis-germatranes containing three hypercoordinated atoms (two Ge and one N) and substituted at the 1,1′-positions with bromo-thienyl groups [(3-bromo-2-thienyl)-, (3,5-dibromo-2-thienyl)-, and 3-(4-bromo)-2-thienyl] have been synthesized from the corresponding triethoxy(thienyl)germanes and tris(1,3-dihydroxypropan-2-yl)amine. The doubly degenerated HOMO and HOMO-1 in these compounds are localized on the thienyl substituents while a 5c-6e hyperbond of the bis-germatranyl core (C–Ge←N→Ge–C system) is only a lower lying HOMO-2. Square-wave pulse voltammetry in CH3CN/0.1 M Bu4NPF6 shows all three compounds to undergo reversible electrochemical oxidation affecting one thienyl substituent. The DFT B3LYP/Lanl2DZ//HF/6-311G(d,p) calculations of their cation radicals suggest the enhancement and shortening of the N→Ge intramolecular dative bond on the side of the oxidized thienyl unit because of the positive charge and the increased acceptor character of the latter; this is accompanied by the loss of the N→Ge dative bond on the side of the non-oxidized substituent and a substantial pyramidalization of the Ge atom.

1,n-Radical ions. Photosensitized (electron transfer) and electrochemical oxidation of 1,1,2,2-tetraphenylcyclopropane

1985 ◽  
Vol 63 (4) ◽  
pp. 871-881 ◽  
Author(s):  
Danial D. M. Wayner ◽  
Donald R. Arnold
Keyword(s):  
Electron Transfer ◽  
Electrochemical Oxidation ◽  
Radical Anion ◽  
Electrochemical Study ◽  
Radical Ions ◽  
Reaction Conditions ◽  
Aromatic Nitriles ◽  
Redox Behaviour ◽  
Transfer Study

The photosensitized (electron transfer) and the electrochemical oxidation of 1,1,2,2-tetraphenylcyclopropane (1) have been studied. The products obtained from the photosensitized (electron transfer) study are 1,1,3,3-tetraphenylpropene (2), 1,3,3-triphenylindene (3), tetraphenylallene (4), and 3-methoxy-1,1,3,3-tetraphenylpropene (8). The product ratios are dramatically dependent upon the reaction conditions, particularly sensitizer (aromatic nitriles, tetracyanoethylene, chloranil, and 2,3-dichloro-5,6-dicyanobenzoquinone were used), and solvent. The variations in product ratios are attributed to variations in the redox behaviour of the sensitizer radical anion and upon the basicity and nucleophilicity of the medium. The products in the electrochemical study are 3, 4, and 8. Common intermediates have been identified and a mechanism for the formation of products is proposed.

Enzymatic decomposition and electrochemical study of alkali lignin by laccase (Trametes versicolor) in the presence of a natural mediator (methyl syringate)

2017 ◽  
Vol 41 (3) ◽  
pp. 958-964 ◽  
Author(s):  
Bin Yao ◽  
Praveen Kolla ◽  
Ranjit Koodali ◽  
Yichun Ding ◽  
Selvaratnam Balaranjan ◽  
...  
Keyword(s):  
Electrochemical Oxidation ◽  
Trametes Versicolor ◽  
Oxidation Mechanism ◽  
Electrochemical Study ◽  
Alkali Lignin ◽  
Mediator System ◽  
Laccase Mediator System ◽  
Methyl Syringate ◽  
Natural Mediator

The electrochemical oxidation mechanism of alkali lignin in the presence of a laccase–mediator system (LMS) in an aerobic environment.

Electrochemical study of carboxylic acids with Nb-supported boron doped diamond anode. Part 2: Electrochemical oxidation associated to DFT calculations

2017 ◽  
Vol 794 ◽  
pp. 93-102 ◽  
Author(s):  
Amison Rick Lopes da Silva ◽  
Jorge Leandro Aquino de Queiroz ◽  
Dayanne Chianca de Moura ◽  
Djalma Ribeiro da Silva ◽  
Carlos A. Martínez-Huitle
Keyword(s):  
Dft Calculations ◽  
Electrochemical Oxidation ◽  
Carboxylic Acids ◽  
Electrochemical Study ◽  
Boron Doped Diamond ◽  
Boron Doped

ELECTROCHEMICAL OXIDATION OF NITROGEN (II) OXIDE IN THE NEUTRAL MEDIUM

THE BULLETIN ◽  
2019 ◽  
Vol 2 (378) ◽  
Author(s):  
Abduali Baeshov ◽  
Gulnar Aibolova ◽  
Elmira Tuleshova ◽  
M. A. Ozler
Keyword(s):  
Electrochemical Oxidation ◽  
Neutral Medium

Electrochemical Oxidation of Hydrazine in Membraneless Fuel Cells

2014 ◽  
Vol 5 (3) ◽  
pp. 73-81 ◽  
Author(s):  
S. Durga ◽  
K. Ponmani ◽  
S. Kiruthika ◽  
B. Muthukumaran
Keyword(s):  
Fuel Cells ◽  
Electrochemical Oxidation ◽  
Membraneless Fuel Cells

Electrochemical Oxidation of Perfluorooctanesulfonate by Magnéli Phase Ti4O7 Electrode in the Presence of Trichloroethylene

2020 ◽  
Vol 1 (4) ◽  
Author(s):  
Peizeng Yang ◽  
Yaye Wang ◽  
Junhe Lu ◽  
Viktor Tishchenko ◽  
Qingguo Huang ◽  
...  
Keyword(s):  
Electrochemical Oxidation ◽  
Current Density ◽  
First Order ◽  
Degradation Rates ◽  
Oxidation Technology ◽  
Magnéli Phase ◽  
Polyfluoroalkyl Substances ◽  
Titanium Suboxide ◽  
Gas Tight ◽  
Magneli Phase

This study examined the degradation of perfluorooctanesulfonate (PFOS) in electrochemical oxidation (EO) processes in the presence of trichloroethylene (TCE). The EO experiment was performed in a gas-tight reactor using Magnéli phase titanium suboxide (Ti4O7) as the anode. The experimental data demonstrated that 75% of PFOS (2 μM) was degraded at 10 mA/cm2 current density in 30 min without TCE present in the solution, while the presence of 76 μM TCE apparently inhibited the degradation of PFOS, reducing its removal down to 53%. Defluorination ratio suggested that PFOS was significantly mineralized upon EO treatment, and it appeared to be not influenced by the presence of TCE. The respective pseudo-first order rate constants (kobs) of PFOS removal were 0.0471 and 0.0254 min-1 in the absence and presence of TCE. The degradation rates of both PFOS and TCE increased with current density rising from 2.5 to 20 mA/cm2. In the presence of TCE, chloride, chlorate, and perchlorate were formed that accounted for 79.7 %, 5.53%, and 1.51% of the total chlorine at 60 min. This work illustrates the promise of the Magnéli phase Ti4O7 electrode based electrochemical oxidation technology for degrading per- and polyfluoroalkyl substances (PFASs) and co-contaminants in groundwaters.

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