Formation of Peroxodiphosphate by the Copper(II)-Catalyzed Oxidation Reaction of the Phosphinate Ion by the Molecular Oxygen. Kinetics and Mechanisms in Aqueous Solutions

1996 ◽  
Vol 69 (3) ◽  
pp. 613-617 ◽  
Author(s):  
Masaru Kimura ◽  
Kyouko Seki ◽  
Hitomi Horie ◽  
Keiichi Tsukahara
Keyword(s):  
Aqueous Solutions ◽  
Molecular Oxygen ◽  
Oxidation Reaction ◽  
Oxygen Kinetics ◽  
Catalyzed Oxidation

scholarly journals Using High-Power UV-LED to Accelerate a Decatungstate-Anion-Catalyzed Reaction: A Model Study for the Quick Oxidation of Benzyl Alcohol to Benzoic Acid Using Molecular Oxygen

Micromachines ◽  
2021 ◽  
Vol 12 (11) ◽  
pp. 1307
Author(s):  
Mamoru Hyodo ◽  
Hitomi Iwano ◽  
Takayoshi Kasakado ◽  
Takahide Fukuyama ◽  
Ilhyong Ryu
Keyword(s):  
Benzoic Acid ◽  
Benzyl Alcohol ◽  
Molecular Oxygen ◽  
High Power ◽  
Oxidation Reaction ◽  
Uv Led ◽  
Oxidation Of Benzyl Alcohol ◽  
Model Study ◽  
Catalyzed Oxidation ◽  
Led Irradiation

High-power UV-LED irradiation (365 nm) effectively accelerated the decatungstate-anion-catalyzed oxidation of benzyl alcohol 1 to benzoic acid 3 via benzaldehyde 2. As the power of the UV-LED light increased, both the selectivity and yield of benzoic acid also increased. The reaction was finished within 1 h to give 3 in a 93% yield using 2 mol% of decatungstate anion catalyst. The combination of a flow photoreactor and high-power irradiation accelerated the oxidation reaction to an interval of only a few minutes.

Copper(II)-catalyzed oxidation of carbon monoxide by molecular oxygen

1967 ◽  
Vol 45 (24) ◽  
pp. 3025-3030 ◽  
Author(s):  
J. J. Byerley ◽  
Jolland Y. H. Lee
Keyword(s):  
Activation Energy ◽  
Carbon Monoxide ◽  
Aqueous Solutions ◽  
Molecular Oxygen ◽  
Rate Determining Step ◽  
Oxidation By Molecular Oxygen ◽  
Kinetics Of ◽  
Equilibrium Step ◽  
Catalyzed Oxidation ◽  
Oxidation Of Carbon Monoxide

The kinetics of the copper (II)-catalyzed oxidation of carbon monoxide by molecular oxygen, i.e. [Formula: see text] have been investigated in aqueous solutions at 120 °C. The rate law was found to be of the form −d[O2]/dt = kexpt[O2][CO][Cu(II)]/[H+], where kexpt = 7.88 × 10−6 M−1 s−1 in 0.25 M acetate solutions. The apparent activation energy is 29 600 cal/mole. The rate-determining step of the reaction appears to be the oxidation by molecular oxygen of a carbon monoxide insertion complex [Formula: see text] formed in the pre-equilibrium step.

Kinetic Model of the 1,2-Propanediol Oxidation Reaction in the Presence of 3wt%Pd/α-Al2O3 Catalyst

2021 ◽  
Vol 903 ◽  
pp. 143-148
Author(s):  
Svetlana Cornaja ◽  
Svetlana Zhizhkuna ◽  
Jevgenija Vladiko
Keyword(s):  
Activation Energy ◽  
Lactic Acid ◽  
Kinetic Model ◽  
Catalytic Oxidation ◽  
Molecular Oxygen ◽  
Oxidation Reaction ◽  
Main Product ◽  
Oxidation Process ◽  
Water Solution ◽  
Reaction Conditions

Supported 3wt%Pd/α-Al₂O₃ catalyst was tested in selective oxidation of 1,2-propanediol by molecular oxygen. It was found that the catalyst is active in an alkaline water solution. Lactic acid was obtained as the main product of the reaction. Influence of different reaction conditions on 1,2-PDO conversion and oxidation process selectivity was studied. Partial kinetic orders of the reaction with respect to 1,2-propanediol, c0(NaOH), p(O2), n(1,2-PDO)/n(Pd)) were determined and an experimental kinetic model of the catalytic oxidation reaction was obtained. Activation energy of the process was calculated and was found to be about 53 ± 5 kJ/mol.

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