scholarly journals Catalytic oxidation of Cedar Bark (Pinus Sibirica) with Oxygen to Vanillin and Pulp

2021 ◽  
Vol 14 (4) ◽  
pp. 457-463
Author(s):  
Dmitry O. Vigul ◽  
◽  
Valery E. Tarabanko ◽  
Yulia V. Chelbina ◽  
Vladimir A. Levdansky
Keyword(s):  
Catalytic Oxidation ◽  
Molecular Oxygen ◽  
Raw Material ◽  
Pinus Sibirica

The catalytic oxidation of natural and pre-extracted cedar bark (Pinus Sibirica) by molecular oxygen is studied. Tannins were shown to inhibit the formation of vanillin while oxidizing the bark. The yields of vanillin are 5–7 wt.% based on bark lignin, which is of 3–4 times lower compared to the results of wood oxidation. The presence of tannins in the raw material complicates the lignin analysis and can overestimate the results twice

Fluorous Biphasic Catalytic Oxidation of Sulfides by Molecular Oxygen/2,2-Dimethylpropanal

2001 ◽  
Vol 2001 (1) ◽  
pp. 181-186 ◽  
Author(s):  
Stefano Colonna ◽  
Nicoletta Gaggero ◽  
Fernando Montanari ◽  
Gianluca Pozzi ◽  
Silvio Quici
Keyword(s):  
Catalytic Oxidation ◽  
Molecular Oxygen ◽  
Oxidation Of Sulfides

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.

Solvent-free liquid-phase selective catalytic oxidation of toluene to benzyl alcohol and benzaldehyde over CeO2-MnOx composite oxides

2022 ◽  
Author(s):  
Gui Chen ◽  
Kuiyi You ◽  
Xiangbo Gong ◽  
Fangfang Zhao ◽  
Zhenpan Chen ◽  
...  
Keyword(s):  
Liquid Phase ◽  
Benzyl Alcohol ◽  
Catalytic Oxidation ◽  
Molecular Oxygen ◽  
Efficient Method ◽  
Value Added ◽  
Solvent Free ◽  
Composite Oxides ◽  
Selective Catalytic Oxidation

An efficient method for highly selective preparation of the high value-added benzyl alcohol (BOL) and benzaldehyde (BAL) from liquid-phase catalytic oxidation of toluene with molecular oxygen over CeO2-MnOx composite oxides...

scholarly journals Aliphatic amines modified CoO nanoparticles for catalytic oxidation of aromatic hydrocarbon with molecular oxygen

2019 ◽  
Vol 40 (10) ◽  
pp. 1488-1493 ◽  
Author(s):  
Meng Liu ◽  
Song Shi ◽  
Li Zhao ◽  
Chen Chen ◽  
Jin Gao ◽  
...  
Keyword(s):  
Aromatic Hydrocarbon ◽  
Catalytic Oxidation ◽  
Molecular Oxygen ◽  
Aliphatic Amines ◽  
Coo Nanoparticles
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