Aza-Michael
reaction was successfully carried out by
using a copper
fluorapatite (CuFAP) catalyst. The reaction of piperidine and cyclohexenone
using CuFAP resulted in 70% conversion and 100% selectivity of 3-(piperidin-1-yl)cyclohexan-1-one.
A kinetic model was validated by Langmuir–Hinshelwood–Hougen–Watson
at varying temperatures, and the absence of mass transfer resistance
was verified by the Weisz Prater criterion. The effect of different
catalysts, temperature, catalyst loading, solvents, mole ratio of
reactants, and stirring speed was studied. The synthesized catalyst
was characterized by FTIR, BET nitrogen adsorption–desorption,
TEM, EDX, XPS, ICP-MS, and XRD. CuFAP catalyst was found to be stable
for up to four cycles with no change in activity.