A comparative study of non-isothermal kinetics of decomposition of calcium oxalate monohydrate

Influence of alternative cations distribution in AgxLi96-x-LSX on dehydration kinetics and its selective adsorption performance for N2 and O2

“…In addition, the most accurate model is supposed to be the one that produces activation energy closest to that calculated by model free methods (Kissinger and Flynn-Wall-Ozawa methods). 21,24 3. Arrhenius equation…”

“…where k is the rate constant, A is the frequency or "pre exponential factor", Ea is the apparent activation energy, R represent ideal gas constant (8.314 J mol -1 K -1 ) and T is the absolute temperature in K. 24 The A can be calculated from the intercept of the plots of most probable g(α) function among the 41 mechanism functions determined.…”

“…Therefore integral method of Coats and Redfern has been widely and successfully used for studying the kinetics of dehydration and decomposition of solid substances. 24 …”

Physico-chemical studies of MgNa3P3O10·12H2O

“…The negative values of S* from two methods for the dehydration step reveals that the activated state is less disordered compared to the initial state. These S* values suggest a large number of degrees of freedom due to rotation which may be interpreted as a «slow» stage [20,21] in this step. The positive values of G* at all studied methods are due to the fact that, the dehydration processes are not spontaneous.…”

“…The related thermodynamic functions can be calculated by using the activated complex theory (transition state) of Eyring [17][18][19]. The following general equation can be written: [20] …”