P S Bassi
Articles written in Journal of Chemical Sciences
Volume 89 Issue 2 April 1980 pp 125-130 Organic
The kinetic data for reactions between aromatic acids, i.e. benzoic acid, salicylic acid and basic copper carbonate in the solid state have been recorded. The measurements have been made at various temperatures for fixed sizes of the particles at constant compression. The products are characterised by infrared and reflectance spectra. The reactions are diffusion-controlled with activation energy of 71.8 and 115.0±5 kJ mol−1 for the formation of Cu(II) benzoate and Cu(II) salicylate respectively.
Volume 93 Issue 8 December 1984 pp 1391-1394 Physical And Theoretical
Kinetics of the reaction between copper and iodine (vapour) have been studied by electrical resistance measurements. A relationship between the change in electrical resistance and thickness of the product film has been formulated. From the data, which follows a parabolic law, values of the specific reaction rate constant have been calculated. The results have been compared with the earlier reported kinetic data of the reaction, measured by the gravimetric method, and are in good agreement.
Volume 101 Issue 6 December 1989 pp 539-546 Physical and Theoretical
The mechanism of eutectic solidification of the naphthalene-thymol system has been investigated by spontaneous crystallization, linear velocity of crystallization and microscopic studies. The kinetic data for all the compositions of the system suggests that the growth is governed by a screw dislocation mechanism. The diffusion process has been found to be a dominant factor in explaining the decrease in the velocity of crystallization when one component is added to the other and also explains the higher growth rate for the eutectic mixture. Both the kinetic and microscopic studies confirm the interdependent nature of the growth of the two phases of the eutectic. The two phases grow simultaneously side by side and are controlled by the cross-diffusion ahead of the solid-liquid interface.
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