Detection of reactive intermediates in manganese(III) porphyrin catalyzed oxidation reaction using 2,4,6-tri-tert-butylphenol as probe substrate

2019 ◽  
Vol 495 ◽  
pp. 119004 ◽  
Author(s):  
Bhawna Rani ◽  
Amit Singh ◽  
Rahul Shrivastava ◽  
Arunava Agarwala
Keyword(s):  
Oxidation Reaction ◽  
Reactive Intermediates ◽  
Catalyzed Oxidation

Transformation and products of captopril with humic constituents during laccase-catalyzed oxidation: Role of reactive intermediates

2016 ◽  
Vol 106 ◽  
pp. 488-495 ◽  
Author(s):  
Penghui Du ◽  
He Zhao ◽  
Chenming Liu ◽  
Qingguo Huang ◽  
Hongbin Cao
Keyword(s):  
Reactive Intermediates ◽  
Catalyzed Oxidation

Colorimetric sensing of copper ions based on the anti-aggregation of unmodified silver nanoparticles in the presence of 1,4-dithiothreitol

2015 ◽  
Vol 7 (2) ◽  
pp. 566-572 ◽  
Author(s):  
Yingjie Ye ◽  
Yi Guo ◽  
Yuan Yue ◽  
Hanjing Huang ◽  
Longtao Zhao ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Oxidation Reaction ◽  
Copper Ions ◽  
Colorimetric Method ◽  
Selective Detection ◽  
Colorimetric Sensing ◽  
Catalyzed Oxidation

A colorimetric method for the fast, sensitive and selective detection of Cu2+ions with silver nanoparticles is proposed based on a specific Cu2+-catalyzed oxidation reaction.

Remediation of model wastewater polluted with methyl parathion by reverse micelle entrapped peroxidase

2011 ◽  
Vol 46 (4) ◽  
pp. 345-354
Author(s):  
Zoheb Karim ◽  
Qayyum Husain ◽  
Rohana Adnan ◽  
Naseem Akhtar
Keyword(s):  
Hydrogen Peroxide ◽  
Catalytic Activity ◽  
Reverse Micelle ◽  
Oxidation Reaction ◽  
Methyl Parathion ◽  
Catalytic Performance ◽  
Redox Mediators ◽  
Ph Dependency ◽  
Effects Of Ph ◽  
Catalyzed Oxidation

The peroxidase/reverse micelle (RM) system effectively catalyzed the oxidation reaction in cyclohexane, while peroxidase from bitter gourd in aqueous buffer exhibited low catalytic activity. The oxidation of methyl parathion (MPT) has been optimized with effects of pH in the water pools, concentration of peroxidase and degree of surfactant hydration (Wo). The peroxidase/RM system showed a strong pH dependency. Its optimum catalytic activity was obtained when the peroxidase/RM was prepared in a buffer of pH 3.0. The effect of different redox mediators on the peroxidase-catalyzed oxidation of MPT was investigated. MPT was slowly oxidized by the peroxidase/RM system while the addition of phenol as a redox mediator strongly enhanced the catalytic performance of the peroxidase/RM system. Hydrogen peroxide strongly inhibited the activity of peroxidase; when the H2O2 was present at more than 0.80 mM, the MPT transformation was significantly reduced.

scholarly journals Determination of hydrogen peroxide by FIA based on the cobalt(II)-catalyzed oxidation reaction of stilbazo.

1988 ◽  
Vol 37 (5) ◽  
pp. 248-252
Author(s):  
Toshio DEGUCHI ◽  
Ryoichi TAKESHITA ◽  
Akira TANAKA ◽  
Isao SANEMASA
Keyword(s):  
Hydrogen Peroxide ◽  
Oxidation Reaction ◽  
Catalyzed Oxidation

Selectively Catalyzed Oxidation of Benzyl Alcohol by FeIII–TAML/Hydrogen Peroxide

2015 ◽  
Vol 723 ◽  
pp. 601-604 ◽  
Author(s):  
Ran Li ◽  
Ge Wang ◽  
Yan Chun Liu ◽  
Xiao Bin Chen ◽  
Zhi Min Sun ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Reaction Time ◽  
Benzyl Alcohol ◽  
Reaction Temperature ◽  
Oxidation Reaction ◽  
Macrocyclic Ligands ◽  
Temperature Reaction ◽  
Oxidation Of Benzyl Alcohol ◽  
Catalyzed Oxidation

Benzyl alcohol was selectively oxidized to benzaldehyde with iron (III) complexed to tetra amido macrocyclic ligands (FeIII–TAML) as catalyst and 30% H2O2 as oxidant. The effect of reaction temperature, reaction time, solvent, amount of catalyst and oxidant on the reaction of catalyzed oxidation of benzyl alcohol were explored. The conversion and selectivity of this oxidation reaction were calculated from calibrated GC yields of benzyl alcohol and benzaldehyde. When oxidation reaction was conducted under the conditions: solvent NMMO: ethanol = 1: 1, n (H2O2): n (benzyl alcohol) = 2, n (catalyst): n (benzyl alcohol) = 1%, temperature 80 ̊C and reaction time 60 minutes, the conversion was 91.23% and the selectivity was 90.12%.

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