ZSM 5 zeolite was impregnated with different KOH loadings (15 wt.%, 25 wt.% and 35 wt.%) to prepare a series of KOH/ZSM 5 catalysts.
the catalysts were calcined at 500 for 3 h and then characterized by N2 adsorption-desorption and x-ray diffraction (XRD) techniques.
the catalysts were tested in the trans esterification reaction in a batch reactor at 60 and under atmospheric pressure.