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Abstract
In this paper a graphical and analytical method is presented for generating reaction isotherms from a set of non-isotherms andvice versa. The method was tested by using computer generated curves. The method was also checked by studying the kinetics of dehydration of calcium oxalate in a static atmosphere. The reaction was monitored in both non-isothermal (with nine heating rates between 0.5 and 60°C min−1) and isothermal modes (at 150, 160 and 170°C). The 160°C isotherm obtained experimentally was compared with that obtained by graphical method from non-isotherms determined experimentally and the differences of α were less than 3%.
Abstract
The solubility isotherm of the system La2O3—SeO2—H2O at 100°C was studied. The compounds of the three-component system were identified by the Schreinemakers method as well as by chemical and X-ray phase analyses. Simultaneous TG and DTA analyses of all compounds of the system were made by using a derivatograph. The mechanism of thermal decomposition was described.
Non-isothermal model-free predictions
Application to the formation of yttria from yttrium trifluoroacetate
deposition, and thermal treatment to remove the organic species and to crystallize the material. Thermal treatment can be optimized by setting up a temperature program that involves isothermal stages to slow down the reaction at the critical steps and non-isothermal
contributes to the retardation of the quiescent isothermal crystallization kinetics [ 12 , 15 , 16 ]. Several authors have demonstrated the nucleating and accelerating effects of nanoclay on the crystallization behavior of semicrystalline polymers in
separately by other temperature modes, such as isothermal observation or at a constant rate heating and/or cooling. However, the above way of observation is not enough, because the rate constant is assumed constant, so that the really observed curves
Introduction A cure kinetic study of polymeric resin can be carried out in a calorimeter analysis, operating by two models: isothermal and non-isothermal. A way to estimate the kinetic parameters using any experimental data is
adsorbate–adsorbent interactions [ 19 ]. They can also permit distinction between the amounts adsorbed into the outer surface and that fixed between macromolecular chains. Analysis of adsorption isotherms by different mathematical models were also developed
of non-isothermal and isothermal kinetic models simulations led to a beneficial kinetic model of thermal decomposition to predict the thermal hazard of LOPs. The chosen approach was to establish an effective model of the thermal decomposition that
Abstract
A simple method for determination of binding isotherm in the protein-ligand interaction was introduced using isothermal titration calorimetric data. This general method was applied to the study of the interaction of myelin basic protein (MBP) from bovine central nervous system with divalent copper ion at 27C in Tris buffer solution at pH=7.2. The binding isotherm for copper-MBP interaction is easily obtained by carrying out titration calorimetric experiment in two different concentrations of MBP. MBP has two binding sites for copper ion, which show positive cooperativity in its sites. The intrinsic association equilibrium constants are 0.083 and 1.740 ?M-1 in the first and second binding sites, respectively. Hence, occupation of the first site has produced an appreciable enhancement 21 of the binding affinity of the second site. The molar enthalpies of binding are -13.5 and -14.8 kJ mol-1 in the first and second binding sites, respectively.
examined using a thermal dynamic calorimeter (differential scanning calorimetry, DSC) and isothermal microcalorimeter (thermal activity monitor III, TAM III) to evaluate basic exothermic decomposition and various thermokinetic parameters. Furthermore
