Synthesis and characterization of Architecturally Modified Mesoporous-microporous MFI (Mobil Five) Zeolite with enhanced catalytic activity

Abstract Four samples MFI zeolites were synthesized in presence of carbon black particles with silica-alumina molar ratio of 100 and different silica to carbon mass ratio under autogeneous pressure without adding any promoter or organic solvent. The synthesis temperature and duration of crystallization were 473K and 16h respectively. A sample of MFI was also synthesized without adding carbon black under similar condition. The synthesized samples were characterized by different techniques such as X- ray diffraction, FT-IR spectroscopy, Scanning electron microscopy, TGA and N2 adsorption desorption. The samples exhibit high crystallinity. The particle size ranged from 2.8 to 7.3 µm. Mesopore to micropore ratios was found to increase with increasing silicon to carbon mass ratio. These structurally modified meso-micro zeolite showed enhanced activity in the benzyl alcohol esterification reaction.