scholarly journals Coexistence of Substituted Phenols Reduces the Fouling Ability of Phenol in Non-aqueous Solvents

2021 ◽  
Author(s):  
László Kiss
Keyword(s):  
Phenol Concentration ◽  
Aqueous Systems ◽  
Substituted Phenols ◽  
Oxidation Potentials

The electrooxidation of phenol showed different rate of deactivation by varying the concentration of substituted phenols (4-chlorophenol, 4-methoxyphenol, 4-tert-butylphenol). This was due to the more favourable solubility properties of the product copolymers compared with poly(phenyleneoxide) the product which forms when only unsubstituted phenol is present. The nature of substituent, switching potential and oxidation potentials of the studied phenols were significant in prevention of electrode fouling. The best reproducibility could be achived upon addition of 4-chlorophenol. This offered a possibility for estimation of phenol concentration in non-aqueous systems.

Calculation of the relative acidities and oxidation potentials of para-substituted phenols. A model for α-tocopherol in solution

2007 ◽  
Vol 5 (11) ◽  
pp. 1739-1743 ◽  
Author(s):  
Nakul K. Singh ◽  
Majeed S. Shaik ◽  
Patrick J. O'Malley ◽  
Paul L. A. Popelier
Keyword(s):  
Substituted Phenols ◽  
Oxidation Potentials

scholarly journals Oxidation potentials of phenols and anilines: correlation analysis of electrochemical and theoretical values

2017 ◽  
Vol 19 (3) ◽  
pp. 339-349 ◽  
Author(s):  
Ania S. Pavitt ◽  
Eric J. Bylaska ◽  
Paul G. Tratnyek
Keyword(s):  
Correlation Analysis ◽  
Kinetic Data ◽  
Manganese Oxides ◽  
Substituted Phenols ◽  
Oxidation Potentials

New experimental and theoretical oxidation potentials for substituted phenols and anilines give improved correlations to kinetic data with manganese oxides.

Separation of close boiling substituted phenols by dissociation extraction

1981 ◽  
Vol 31 (1) ◽  
pp. 279-284 ◽  
Author(s):  
Vishwas V. Wadekar ◽  
Man Mohan Sharma
Keyword(s):  
Substituted Phenols

Quantitative Structure-Property Relationship (QSPR) Study of the Hydrophobicity of Phenols and 2-(Aryloxy-a-acetyl)-phenoxathiin Derivatives

2008 ◽  
Vol 59 (11) ◽  
Author(s):  
Adrian Beteringhe ◽  
Ana Cristina Radutiu ◽  
Titus Constantinescu ◽  
Luminita Patron ◽  
Alexandru T. Balaban
Keyword(s):  
Water Solubility ◽  
Molecular Descriptors ◽  
Log P ◽  
Structure Property ◽  
Substituted Phenols ◽  
Reverse Phase ◽  
Aromaticity Index ◽  
Structure Property Relationship ◽  
Layer Chromatography ◽  
Energy Of Formation

In a preceding study, the molecular hydrophobicity (RM0) was determined experimentally from reverse-phase thin-layer chromatography data for several substituted phenols and 2-(aryloxy-a-acetyl)-phenoxathiin derivatives, obtained from the corresponding phenoxides and 2-(a-bromoacetyl)-phenoxathiin. QSPR correlations for RM0 were explored using four calculated molecular descriptors: the water solubility parameter (log Sw), log P, the Gibbs energy of formation (DGf), and the aromaticity index (HOMA). Triparametric correlations do not improve substantially the biparametric correlation of RM0 in terms of log Sw and HOMA.

Accelerated Phenol Removal by Amplifying the Metabolic Pathway with a Recombinant Plasmid Encoding Catechol 2, 3 Oxygenase

1992 ◽  
Vol 26 (9-11) ◽  
pp. 2191-2194 ◽  
Author(s):  
M. Fujita ◽  
M. Ike ◽  
T. Kamiya
Keyword(s):  
Metabolic Pathway ◽  
Recombinant Plasmid ◽  
Removal Rate ◽  
Phenol Degradation ◽  
Wild Strain ◽  
Phenol Concentration ◽  
Phenol Removal

The metabolic pathway of the phenol degradation in Pseudomonasputida BH was amplified by introducing the recombinant plasmid containing catechol 2,3 oxygenase gene isolated fron the chromosome of BH. This strain could degrade phenol and grow much faster than the wild strain at the phenol concentration of 100mg/L. This strain seems to accelerate the phenol removal rate if it is applied to the treatment of wastewater containing phenol.

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