Kinetic Study of Peroxidase-Catalyzed Coupling of Benzene-1,4-diamine and N-(2-Aminoethyl)naphthalen-1-amine: Development of Micromolar Hydrogen Peroxide Reaction System

2010 ◽  
Vol 93 (6) ◽  
pp. 1227-1237 ◽  
Author(s):  
Anantharaman Shivakumar ◽  
Padmarajaiah Nagaraja ◽  
Narayanan Aradhana ◽  
Avinash K. Gowda
Keyword(s):  
Hydrogen Peroxide ◽  
Kinetic Study ◽  
Reaction System

scholarly journals Au Modified F-TiO2 for Efficient Photocatalytic Synthesis of Hydrogen Peroxide

Molecules ◽  
2021 ◽  
Vol 26 (13) ◽  
pp. 3844
Author(s):  
Lijuan Li ◽  
Bingdong Li ◽  
Liwei Feng ◽  
Xiaoqiu Zhang ◽  
Yuqian Zhang ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Reaction System ◽  
Reaction Medium ◽  
Pure Tio2 ◽  
H2o2 Production ◽  
Tio2 Photocatalyst ◽  
H2o2 Decomposition ◽  
Spin Resonance ◽  
Photocatalytic Synthesis

In this work, Au-modified F-TiO2 is developed as a simple and efficient photocatalyst for H2O2 production under ultraviolet light. The Au/F-TiO2 photocatalyst avoids the necessity of adding fluoride into the reaction medium for enhancing H2O2 synthesis, as in a pure TiO2 reaction system. The F− modification inhibits the H2O2 decomposition through the formation of the ≡Ti–F complex. Au is an active cocatalyst for photocatalytic H2O2 production. We compared the activity of TiO2 with F− modification and without F− modification in the presence of Au, and found that the H2O2 production rate over Au/F-TiO2 reaches four times that of Au/TiO2. In situ electron spin resonance studies have shown that H2O2 is produced by stepwise single-electron oxygen reduction on the Au/F-TiO2 photocatalyst.

scholarly journals Kinetic study of the inactivation of ascorbate peroxidase by hydrogen peroxide

2000 ◽  
Vol 348 (2) ◽  
pp. 321 ◽  
Author(s):  
Alexander N.P. HINER ◽  
José Neptuno RODRÍGUEZ-LÓPEZ ◽  
Marino B. ARNAO ◽  
Emma LLOYD RAVEN ◽  
Francisco GARCÍA-CÁNOVAS ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Kinetic Study ◽  
Ascorbate Peroxidase

APPLICABILITY OF BRAY-LIEBHAFSKY REACTION FOR CHEMICAL COMPUTING

2021 ◽  
Author(s):  
Željko Čupić ◽  
◽  
Ana I vanović Šašić ◽  
Stevan Maćešić ◽  
Slobodan Anić ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Numerical Simulations ◽  
Reaction System ◽  
Dynamic State ◽  
Oscillatory Reaction ◽  
Oscillatory Reactions ◽  
Dynamic States

The first discovered homogeneous oscillatory reaction was the Bray-Liebhafsky (BL) one, described in a paper published exactly 100 years ago. However, the applicability of oscillatory reactions in chemical computing was recently discovered. Here we intend to expose the native computing concept applied to intermittent states of the BL reaction, because we believe that this particular state may have some advantages. For this purpose, numerical simulations will be used based on the known model. Sequences of perturbations will be introduced by adding iodate (IO3-) and hydrogen peroxide (H2O2), separately, as well as in various combinations with one another. It will be shown that dynamic states obtained after perturbations with same species depend very much on the sequence in which these species were used in perturbations. Additionally, it will be shown that obtained dynamic states shift the system from chaotic intermittent dynamic state to different complex periodic states. Hence, the applicability of the BL reaction system in chemical computing was demonstrated.

scholarly journals A Kinetic Study of the Reaction of isoPropoxy-methyl-phosphoryl Fluoride (Sarin) with Hydrogen Peroxide.

1958 ◽  
Vol 12 ◽  
pp. 723-730 ◽  
Author(s):  
Lennart Larsson ◽  
Börje Wickberg ◽  
Einar Stenhagen ◽  
Lars Gunnar Sillén ◽  
B. Zaar ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Kinetic Study

Optimal experimental design and artificial neural networks applied to the photochemically enhanced Fenton reaction

2001 ◽  
Vol 44 (5) ◽  
pp. 339-345 ◽  
Author(s):  
S. Göb ◽  
E. Oliveros ◽  
S.H. Bossmann ◽  
A.M. Braun ◽  
C.A.O. Nascimento ◽  
...  
Keyword(s):  
Neural Networks ◽  
Hydrogen Peroxide ◽  
Artificial Neural Networks ◽  
Fenton Reaction ◽  
Irradiation Time ◽  
Batch Reactor ◽  
Reaction System ◽  
Process Conditions ◽  
Minor Effect ◽  
Artificial Neural

Among advanced oxidation processes (AOPs), the photochemically enhanced Fenton reaction may be considered as one of the most efficient for the degradation of contaminants in industrial wastewater. This process involves a series of complex reactions. Therefore, an empirical model based on artificial neural networks has been developed for fitting the experimental data obtained in a laboratory batch reactor for the degradation of 2,4-dimethyl aniline (2,4-xylidine), chosen as a model pollutant. The model describes the evolution of the pollutant concentration during irradiation time as a function of the process conditions. It has been used for simulating the behavior of the reaction system in sensitivity studies aimed at optimizing the amounts of reactants employed in the process, an iron(III) salt and hydrogen peroxide, as well as the temperature. The results show that the process is most sensitive to the concentration of iron(III) salt and temperature, whereas the concentration of hydrogen peroxide has a minor effect.

Horseradish peroxidase-catalyzed hydrogelation consuming enzyme-produced hydrogen peroxide in the presence of reducing sugars

Soft Matter ◽  
2019 ◽  
Vol 15 (10) ◽  
pp. 2163-2169 ◽  
Author(s):  
Enkhtuul Gantumur ◽  
Shinji Sakai ◽  
Masaki Nakahata ◽  
Masahito Taya
Keyword(s):  
Hydrogen Peroxide ◽  
Horseradish Peroxidase ◽  
Reducing Sugars ◽  
Reaction System ◽  
System P

Three kinds of reducing sugars are applied to HRP-catalyzed hydrogelation to promote the generation of H2O2 in the reaction system.

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