Kinetics of absorption of carbon dioxide in aqueous amine and carbonate solutions with carbonic anhydrase

2013 ◽  
Vol 12 ◽  
pp. 259-268 ◽  
Author(s):  
Nathalie J.M.C. Penders-van Elk ◽  
Espen S. Hamborg ◽  
Patrick J.G. Huttenhuis ◽  
Sylvie Fradette ◽  
Jonathan A. Carley ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Carbonic Anhydrase ◽  
Carbonate Solutions ◽  
Kinetics Of

Kinetics of absorption of carbon dioxide in aqueous MDEA solutions with carbonic anhydrase at 298K

2012 ◽  
Vol 9 ◽  
pp. 385-392 ◽  
Author(s):  
Nathalie J.M.C. Penders-van Elk ◽  
Peter W.J. Derks ◽  
Sylvie Fradette ◽  
Geert F. Versteeg
Keyword(s):  
Carbon Dioxide ◽  
Carbonic Anhydrase ◽  
Kinetics Of

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.

Sign in / Sign up

Export Citation Format

Share Document