Synthesis and Characterization of Architecturally Modified Mesoporous-Microporous MFI (Mobil Five) Zeolite with Enhanced Catalytic Activity

Four samples of MFI zeolites with silica to alumina ratio 100 and using different carbon mass ratios (1:1, 1:4, 1:8 1:12) were synthesized by black particles. Silica-alumina molar imposes the framework structure zeolites. In general an increase in silica-alumina gel ratio, thermal stability, acid resistance hydrophobicity product increases ion-exchange capacity decreases. A higher (as high as 100) is considered. ZSM-5 being mainly microporous, their use catalyst restricted only small molecules. So, introducing mesopores zeolite framework, we basically tried overcome limited reactions involving large Pore can be modified particles during synthesis. Such type synthesis used introduce mesopore decrease crystal size zeolite. Different study pore under autogeneous pressure without adding any promoter or organic solvent. The characterized techniques such X-ray diffraction, FTIR spectroscopy, scanning electron microscopy, TGA N2 adsorption-desorption isotherm. exhibit crystallinity (84-91%). particle ranged from 2.8 7.3 μm. Mesopore micropore was found increasing silicon ratio. These structurally meso-micro showed enhanced activity benzyl alcohol esterification reaction acetic acid. selectivity towards acetate all cases 100%.