01924nas a2200181   4500008004100000022001400041245013100055210006900186260007100255300001400326490000700340520117800347100002401525700001601549700002401565700002901589856012401618       2007                        eng d  a0888-588500aKinetics of reductive alkylation of p-phenylenediamine with methyl ethyl ketone using 3% Pt/Al2O3 catalyst in a slurry reactor0 aKinetics of reductive alkylation of pphenylenediamine with methy  a1155 16TH ST, NW, WASHINGTON, DC 20036 USAbAMER CHEMICAL SOCcMAY  a3243-32540 v463 a<p>Intrinsic kinetics of reductive alkylation of p-phenylenediamine (PPDA) with methyl ethyl ketone (MEK) using 3% Pt/Al2O3 catalyst was studied in a slurry reactor. The overall reaction involves a combination of parallel and consecutive reactions involving equilibrium noncatalytic (homogeneous) and catalytic (heterogeneous) steps. For the purpose of kinetic modeling, the effects of PPDA concentration, catalyst loading, agitation speed, and partial pressure of hydrogen were studied in a temperature range of 373-413 K. Quantitative criteria were used to ensure that the reaction occurred in the kinetic regime. Different rate equations have been considered based on the elementary steps involving catalytic and noncatalytic reactions, which lay stress on the different types of interactions occurring between the reactants and the active catalyst sites. The best-fit rate model has been proposed by rigorous optimization and model discrimination procedures, by simulating the experimental concentration-time data. For the best-fit model, the agreement between the predicted and experimental data was found to be very good over a wide range of operating conditions.</p>1 aPatil, Narendra, G.1 aRoy, Debdut1 aChaudhari, Amit, S.1 aChaudhari, Raghunath, V.  uhttps://library.ncl.res.in/content/kinetics-reductive-alkylation-p-phenylenediamine-methyl-ethyl-ketone-using-3-ptal2o3