Abstract
Formation of N-aminopiperidine (NAPP) in the reaction of monochloramine with piperidine was studied by varying the reagents concentrations, pH and temperature. The study was carried out in diluted solutions, recording simultaneously monochloramine concentration by UV spectrophotometry at 243 nm and hydrazine concentration at 237 nm after treatment with formaldehyde. The presence of two competitive reactions: formation of NAPP and a complex parallel reaction limiting the yield of hydrazine, was established. Reaction products were characterized by GC/MS analysis. The rate constant of NAPP formation and activation parameters were determined, k 1 = 56 × 10−3 M−1 s−1 (25°C) and k 1 = 9.3 × 106 exp(−46.5/RT) M−1 s−1, respectively.
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Darwich, C., Elkhatib, M., Pasquet, V. et al. Kinetic and mechanistic study of N-aminopiperidine formation via the raschig process. Kinet Catal 54, 649–655 (2013). https://doi.org/10.1134/S0023158413060037
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DOI: https://doi.org/10.1134/S0023158413060037