Thermogravimetric characteristics and kinetics of herb residues catalyzed by potassium carbonate

Author(s):  
Hongyu Zhu ◽  
Lin Lang ◽  
Gang Fang ◽  
Dingying Na ◽  
Xiuli Yin ◽  
...  
2020 ◽  
Vol 381 ◽  
pp. 122712 ◽  
Author(s):  
Yue Wu ◽  
Masood S. Alivand ◽  
Guoping Hu ◽  
Geoffrey W. Stevens ◽  
Kathryn A. Mumford

1998 ◽  
Vol 547 ◽  
Author(s):  
T. Ohashi ◽  
K. Nakagawa

AbstractLithium zirconate, which reacts with CO2 reversibly at temperatures over 500°C, is expected to find wider application than conventional CO2 absorbents, as the latter can be used only at room temperature. We examined the effect of potassium carbonate, which had usually been added to facilitate the formation of lithium zirconate in the past, on the kinetics of CO2 absorption reaction. The result shows that the CO2 absorption rate of lithium zirconate powder is extremely accelerated by the potassium carbonate additive. We conclude that this acceleration results from the formation of a eutectic carbonate composed of Li2CO3 and K2CO3.


1994 ◽  
Vol 59 (11) ◽  
pp. 2357-2374 ◽  
Author(s):  
Erich Lippert ◽  
Karel Mocek ◽  
Emerich Erdös

Results are presented of an experimental kinetic study of the heterogeneous reaction between gaseous sulfur dioxide and solid anhydrous potassium carbonate. The measurements were carried out in an all glass kinetic flow apparatus with nitrogen as the carrier gas and a fixed bed of the solid working in the differential regime at atmospheric pressure and a temperature of 423 K (150 °C). The reaction course was studied in dependence on the partial pressures of sulfur dioxide (pSO2) and water vapour (pH2O) in concentration ranges pSO2 = 13 - 430 Pa and pH2O = 0 - 2 100 Pa. In the reaction, water vapour acts as a gaseous catalyst. Based on the experimental data, the corresponding kinetic equation was found together with the numerical values of the relevant rate and equilibrium adsorption constants.


Fuel ◽  
1983 ◽  
Vol 62 (2) ◽  
pp. 221-225 ◽  
Author(s):  
Freek Kapteijn ◽  
Jacob A. Moulijn

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