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Kinetic study of the solid‐state reaction between phthalic anhydride and P‐nitroaniline
Anantharanganathan Baradarajan
Published in
Volume: 52
Issue: 3
Pages: 364 - 368
The addition reaction between the compacted powders of phthalic anhydride and p‐nitroaniline was studied. Both the reactants of equal particle size, were mixed in 1‐to‐1 molar ratio and compacted. Three particle sizes — 0.0065 cm, 0.0178 cm and 0.0376 cm and three compaction pressures — 302.0 kgf/cm2, 785.0 kgf/cm2 and 1208.0 kgf/cm2 were used for the study. Conversions were measured at 80°, 90°, 100°, 110° and 120°C for 1/2, 1, 2, 4, 8, 12, 16, 20 and 24 hours. The reaction rate changed to a constant value, after an initial phase boundary process. The mole percentage conversions increased with decrease in particle size, increase in compaction pressure corresponding to a decrease in the initial porosity of the compact. It was also observed that the final porosity of the compact increased with increase in reaction temperature. Combination of Jander's model and parabolic rate law was used to calculate the values of the reaction rate constant equivalent. The activation energy was calculated to be 14 to 34 kilocalories per gram mole. Copyright © 1974 Canadian Society for Chemical Engineering
About the journal
JournalThe Canadian Journal of Chemical Engineering
Open AccessNo