Kinetics of the catalytic oxidation of benzene

1963 ◽  
Vol 41 (5) ◽  
pp. 220-225 ◽  
Author(s):  
R. Hayashi ◽  
R. R. Hudgins ◽  
W. F. Graydon

Studies of the catalytic oxidation of benzene to maleic anhydride and carbon dioxide over vanadia/molybdena catalysts show that the major part of the reaction involves interacting gas and gas-solid processes. The results are consistent with a mechanism in which a benzeneoxygen adduct is formed catalytically, desorbs and then reacts to give maleic anhydride entirely in the gas phase. On the basis of this proposed mechanism, the kinetics of individual reactions have been investigated in some depth. The over-oxidation of maleic anhydride has been found to be not significant under the conditions of reaction. The kinetic relationships governing the homogeneous decomposition of the adduct and the oxidation of the adduct to maleic anhydride and to carbon dioxide have been established. The results show that essentially all of the anhydride originates from mixed gas-solid/gas reaction while substantial amounts of carbon dioxide are produced entirely catalytically.


2011 ◽  
Vol 12 (10) ◽  
pp. 859-865 ◽  
Author(s):  
Hongjing Wu ◽  
Liuding Wang ◽  
Jiaoqiang Zhang ◽  
Zhongyuan Shen ◽  
Jinghui Zhao

2021 ◽  
Vol 509 ◽  
pp. 111638
Author(s):  
Satyajit Dey Baruah ◽  
Subrata Paul ◽  
Nand Kishor Gour ◽  
Nishant Biswakarma ◽  
Ramesh Chandra Deka

Nukleonika ◽  
2017 ◽  
Vol 62 (3) ◽  
pp. 235-240 ◽  
Author(s):  
Henrietta Nichipor ◽  
Yongxia Sun ◽  
Andrzej G. Chmielewski

Abstract Theoretical study of NOx removal from humid air by a hybrid system (catalyst combined with electron beam) was carried out. The purpose of this work is to study the possibility to decrease energy consumption for NOx removal. The kinetics of radiation catalytic oxidation of NO on the catalyst TiO2 surface under electron beam irradiation was elaborated. Program Scilab 5.3.0 was used for numerical simulations. Influential parameters such as inlet NO concentration, dose, gas fl ow rate, water concentration and catalyst contents that can affect NOx removal efficiency were studied. The results of calculation show that the removal efficiency of NOx might be increased by 8-16% with the presence of a catalyst in the gas irradiated field.


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