Kinetics of CO and CO2Evolution During the Temperature-Programmed Oxidation of Coke Deposited on Cracking Catalysts

1998 ◽  
Vol 178 (1) ◽  
pp. 275-283 ◽  
Author(s):  
Chao'en Li ◽  
Cam Le Minh ◽  
Trevor C. Brown
Keyword(s):  
Temperature Programmed Oxidation ◽  
Temperature Programmed ◽  
Kinetics Of ◽  
Cracking Catalysts

Temperature-Programmed Oxidation of Coke Deposited on Cracking Catalysts:  Combustion Mechanism Dependence

1997 ◽  
Vol 11 (2) ◽  
pp. 463-469 ◽  
Author(s):  
Cam Le Minh ◽  
Rodney A. Jones ◽  
Ian E. Craven ◽  
Trevor C. Brown
Keyword(s):  
Combustion Mechanism ◽  
Temperature Programmed Oxidation ◽  
Temperature Programmed ◽  
Cracking Catalysts

Kinetics of temperature-programmed reactivation of a hydrodesulphurization catalyst

1983 ◽  
Vol 48 (12) ◽  
pp. 3340-3355 ◽  
Author(s):  
Pavel Fott ◽  
Pavel Šebesta
Keyword(s):  
Carbon Dioxide ◽  
Thermal Analysis ◽  
Differential Thermal Analysis ◽  
Thin Layer ◽  
Kinetic Parameters ◽  
Diffusion Region ◽  
Reaction Heat ◽  
Gaseous Products ◽  
Temperature Programmed ◽  
Kinetics Of

The kinetic parameters of reactivation of a carbonized hydrodesulphurization (HDS) catalyst by air were evaluated from combined thermogravimetric (TG) and differential thermal analysis (DTA) data. In addition, the gaseous products leaving a temperature-programmed reactor with a thin layer of catalyst were analyzed chromatographically. Two exothermic processes were found to take part in the reactivation, and their kinetics were described by 1st order equations. In the first process (180-400 °C), sulphur in Co and Mo sulphides is oxidized to sulphur dioxide; in the second process (300-540 °C), in which the essential portion of heat is produced, the deposited carbon is oxidized to give predominantly carbon dioxide. If the reaction heat is not removed efficiently enough, ignition of the catalyst takes place, which is associated with a transition to the diffusion region. The application of the obtained kinetic parameters to modelling a temperature-programmed reactivation is illustrated on the case of a single particle.

N2O Temperature-Programmed Oxidation and EXAFS Studies on the Dispersion of Copper in Ceria-Supported Nanocatalysts

2005 ◽  
Vol 17 (15) ◽  
pp. 3935-3943 ◽  
Author(s):  
A. Tschöpe ◽  
J. Markmann ◽  
P. Zimmer ◽  
R. Birringer ◽  
Chadwick
Keyword(s):  
Temperature Programmed Oxidation ◽  
Temperature Programmed
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