The Efficient Recyclable Molybdenum- and Tungsten-Promoted Mesoporous ZrO2 Catalysts for Aminolysis of Epoxides

In the present study, we report synthesis and catalytic activity of tungsten- molybdenum-promoted mesoporous metal oxides in aminolysis epoxides. The as-synthesized catalysts were fully characterized by a variety techniques such as transmission electron microscopy (TEM), scanning (SEM), temperature-programmed reduction (TPR) desorption (TPD), nitrogen sorption measurements, powder X-ray diffraction (p-XRD), thermogravimetric analysis (TGA). Amongst two supports utilized, ZrO2 is better support compared to SiO2. Furthermore, MoO3 proved be dopant its counterpart. Several parameters variation solvents, substrates, catalyst amounts, stirring speed investigated. It was observed that 450 rpm optimum speed, with toluene best solvent styrene oxide substrate. Moreover, afforded 98% conversion 95% selectivity towards 2-phenyl-2-(phenylamino) ethanol 5% 1-phenyl-2-(phenylamino) ethanol. 5%MoO3-ZrO2 demonstrated optimal performance it exhibited excellent well great stability after being recycled 6 times.