In this investigation H-Mordenite Zeolite has been shown to be an efficient, rapid, green, stable, Chemoselective and recyclable catalyst for the synthesis of 1, 1- diacetates (acylals) of various aromatic aldehydes under solvent- free conditions at room temperature. The main advantages of this protocol include low catalyst loading, shorter reaction time, excellent yields, eco-friendly, mild-condition, easy work-up procedures and reusable catalyst. This method must be useful in future for the synthesis of similar derivatives. The synthesized zeolite was characterized by various techniques via X-ray diffraction (XRD), Scanning Electronic microscopy (SEM), Fourier transform-infrared (FTIR spectroscopy) and Brunauer–Emmett–Teller (BET) surface area analysis. The synthesized reaction products were characterized by FTIR and 1H-NMR technique. Further investigation of the application of H-MOR zeolite for other reactions is ongoing in our laboratory.