STUDY THE KINETIC OF NEW PHOTO-STABILIZER (4-STEAROYLRESORCINOL) PRODUCTION USING BATCH REACTOR

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  M. M. Alfaize   |      S. A. Niema   |      G. J. Alhamar   |   

4-Stearoylresorcinol was prepared by acylation of resorcinol with stearoyl chloride in the presence of zinc chloride as a catalyst in a batch reactor. The temperature range of reaction was (50-80)C. The rate of acylation increased with temperature up to (70 C). The conversion of reactants appeared to follow the second-order kinetic model. The reaction rate constant was (0.0031 l/mol.min) and was higher at higher temperatures. The activation energy was (16.8258 kJ/mol). The optimal catalyst concentration was (2.9936 mol/l). Also, a quantitative relationship was derived to represent the weight of the product as a function of the reaction variables. The quantitative relationship gave a mean deviation equal to (5%). The product concentration was measured by UV spectroscopy.