Role of quaternary ammonium salts in the liquid-phase oxidation of ethylbenzene to hydroperoxide with molecular oxygen

2005 ◽  
Vol 294 (2) ◽  
pp. 290-297 ◽  
Author(s):  
P.P. Toribio ◽  
J.M. Campos-Martin ◽  
J.L.G. Fierro
Keyword(s):  
Liquid Phase ◽  
Molecular Oxygen ◽  
Quaternary Ammonium ◽  
Quaternary Ammonium Salts ◽  
Liquid Phase Oxidation ◽  
Ammonium Salts ◽  
Phase Oxidation ◽  
Oxidation Of Ethylbenzene

Activity of Manganese Carboxylates in the Process of Liquid-Phase Oxidation of Ethylbenzene with Atmospheric Oxygen

2021 ◽  
Vol 899 ◽  
pp. 215-219
Author(s):  
Rinat Mukhamedzyanov ◽  
Zufar Muzipov ◽  
The Son Pham ◽  
Elina Vasilyeva ◽  
Raisa Akhmedyanova
Keyword(s):  
Liquid Phase ◽  
Oxidation Reaction ◽  
Atmospheric Oxygen ◽  
Liquid Phase Oxidation ◽  
Phase Oxidation ◽  
Oxidation Of Ethylbenzene ◽  
Variable Valency

The process of oxidation of hydrocarbon with oxygen proceeds with formation of the corresponding hydroperoxide as the primary product [1,2]. A catalyst is the most important factor that influences on the direction of flow of the oxidation reaction. Catalysts based on metals of variable valency, and their derivatives are the most active in reactions of oxidation of hydrocarbon [3].

Esterification of 1,4-dichlorobutane with sodium formate under solid–liquid phase transfer catalysis. A kinetic study

1989 ◽  
Vol 67 (2) ◽  
pp. 245-249 ◽  
Author(s):  
Hayder A. Zahalka ◽  
Yoel Sasson
Keyword(s):  
Liquid Phase ◽  
Kinetic Study ◽  
Quaternary Ammonium ◽  
Phase Transfer Catalysis ◽  
Phase Transfer ◽  
Sodium Formate ◽  
Product Distribution ◽  
Quaternary Ammonium Salts ◽  
Ammonium Salts ◽  
Solid Liquid

Kinetic data are reported regarding the esterification of 1,4-dichlorobutane with sodium formate catalyzed by quaternary ammonium salts as a model for reactions in series, under solid–liquid phase transfer conditions. The process was found to follow a consecutive first-order mechanism of the general type A → R → S. The reactivity of the quaternary ammonium salts with regard to the counteranion was Cl− > Br− > 1− > HSO4−. The reaction rate was linearly dependent on catalyst concentration up to 12 mol% of catalyst relative to the substrate. Above this concentration the rate was constant and independent of the amount of the catalyst. The activation energy of the two consecutive steps was found to be similar (21 kcal/mol). Therefore, the product distribution (R/S) is not appreciably affected by temperature. A mechanism termed "Thin aqueous boundary layer" is suggested for nucleophilic displacement reactions under solid–liquid phase transfer conditions. Keywords: phase transfer catalysis, series reactions, kinetic study.

scholarly journals Catalytic Performance of MgO-Supported Co Catalyst for the Liquid Phase Oxidation of Cyclohexane with Molecular Oxygen

Catalysts ◽  
2017 ◽  
Vol 7 (5) ◽  
pp. 155 ◽  
Author(s):  
Mingzhou Wu ◽  
Yu Fu ◽  
Wangcheng Zhan ◽  
Yanglong Guo ◽  
Yun Guo ◽  
...  
Keyword(s):  
Liquid Phase ◽  
Molecular Oxygen ◽  
Catalytic Performance ◽  
Liquid Phase Oxidation ◽  
Co Catalyst ◽  
Phase Oxidation

Liquid phase oxidation of ethylbenzene on pure and metal doped HS-AlF3

2008 ◽  
Vol 10 (2) ◽  
pp. 227-231 ◽  
Author(s):  
Irmina K. Murwani ◽  
Kerstin Scheurell ◽  
Erhard Kemnitz
Keyword(s):  
Liquid Phase ◽  
Liquid Phase Oxidation ◽  
Phase Oxidation ◽  
Oxidation Of Ethylbenzene ◽  
Metal Doped
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