Oxidation kinetic study of copper(I) in ferroelectric ceramic [PbTiO3-PbZrO3-PbCuNbO3 + 0.5 mol%MnO2] system by high resolution thermogravimetric analysis

Pyrolysis of orange waste: A thermo-kinetic study

“…This dependence of E a (˛) on ˛ is typical of a multiple-steps reaction initially limited by a diffusion mechanism [45,47]. Similarly, the pyrolysis degradation of cellulose in the matrix could also be affected by the presence or simultaneous degradation of lignin and residues from the hemicelluloses degradation.…”

“…Once the weaker bonds are broken, the limiting step of degradation shifts toward to degradation by random scissions of lineal chain, which typically promote an increase in the activation energy [45,46]. Therefore, the existence of this zone, with slope changes at ˛ = 0.25, is a clear indication that reveals a change of mechanism of the pyrolytic breaking bonds and suggest that the energetic barrier necessary to overcome different interactions during the last step of hemicelluloses pyrolysis degradation, comprises multiple and simultaneous processes [47][48][49]. This behavior may be attributed to the cross-linked nature of the residual solid, composed essentially by cellulose and lignin, besides residual products of the hemicelluloses degradation, where the main problems will be associated to heat-and mass-transfer processes.…”

Thermal Decomposition Kinetics of Some Di‐ and Triorganotin(IV) Carboxylates Derived from para‐Nitrophenylethanoic Acid

“…Recently in the material science, the solid state kinetic data obtained from external stimuli, such as thermal activation by thermogravimetry (TG), differential thermal analysis (DTA) and differential scanning calorimetry (DSC) have become highly useful in designing the formulation and characterization of materials and technological processes. [1][2][3][4][5] The thermal properties are expressed in term of various kinetic and thermodynamic parameters that are evaluated on the basis of a well established TG and DSC scans recorded at specific heating rate and atmospheric conditions (under nitrogen, helium, air flow or vacuum). 6 Thermal decomposition of a solid is highly complicated, taking place in the heterogeneous phase system where various stages can be identified on the basis of heat exchanged along with the formation of new solid phase or the knockout of gaseous products.…”

Thermokinetic studies of organotin(IV) carboxylates derived from para-methoxyphenylethanoic acid

“…As for as the material science is concerned, the solid state kinetic data *Corresponding author. E-mail: drdanish62@gmail.com (resulting from external stimuli, such as thermal activation by thremogravimetry (TG), differential thermal analysis (DTA) and differential scanning calorimetry (DSC)) has become highly useful in formulation and characterization of materials and technological processes [18][19][20]. The thermal behavior and properties are reflected by the thermokinetic parameters evaluated on the basis of a well established TG and DSC scans recorded at a certain heating rate and atmospheres (under nitrogen or air flow) for the degradation processes of a compound [21].…”