F. Ashrafi, A. A. Khodadadi, M. Afsharpour, A. Safarpour Malakroudi
New nano structures of molybdenum oxide based on carbon nanotubes (CNTs) as MoO5, Na2MoO4.2H2O and (NH4)6Mo7O24.4H2O have prepared in presence of water by reflex and hydrothermal method. The structures and morphologies of these nano – catalysts, also, have confirmed by IR, SEM, TEM, TGA and XRD. In this investigation kinetics of reaction of 2- propanol in presence of hydrogen peroxide as oxidant, n- dodecane as intern standard and CH2Cl2 as solvent, was studied. Between these three nano – catalysts for transformation of 2- propanol to 2-propanone, (NH4)6Mo7O24- MWNT disposed better yield than the two others. The selectivity of these reactions is total, because of single product. The constant of rate of oxidation reaction of 2- propanol by using (NH4)6Mo7O24- CNT nano – catalyst, is greater than the others one. Experimental data for these reactions show that they follow a kinetic of second order. The kinetic relation of oxidation reaction of 2- propanol in presence of nano – catalyst was studied by a proposed mechanism. By using two methods, approximation for rate limiting stage and stationary state approximation, r = [2- propanol] [H2O2] was obtained.
