23 research outputs found

    Investigation of the crystallization kinetics of Zn(Phe)SO<sub>4</sub><sup>.</sup>H<sub>2</sub>O by microcalorimetry

    No full text
    2757-2761The crystal growth process of Zn(Phe)SO4.H2O from water and acetone has been investigated using a Calvet microcalorimeter. The heat produced and the rate of heat production during the crystal growth process at 293.15 K, 295.15 K, 298.15 K and 300.15 K have been measured. On the basis of experimental and calculated results, the thermodynamic parameters (the apparent activation enthalpies, the activation entropies, the activation free energies), the rate constant and the kinetic parameters (the activation energies, the pre-exponential) during the crystal growth process have been obtained. The results show that the crystal growth proceeds in accordance with the Burton-Cabrera-Frank dislocation theory
    corecore