Preparation of supported tin oxide solid base nanocatalyst and investigation the effectof operational parameters on the its catalytic activity in the tranestrification reaction

This work reports the synthesis and characterization of SnO2/SBA-15 nanocatalyst with different SnO2/SBA-15 wt% prepared by the impregnation method in a basic medium and subsequent calcination of the precursors. The silanolgroups on the internal walls of SBA-15 are suggested to be the sites for tin incorporation. The characterization of thecatalysts was carried out by using X-ray diffraction (XRD), and scanning electron microscopy (SEM). Transesterificationof n-butyl acetate with methanol was studied over SnO2/SBA-15 catalyst at atmospheric pressure and 95ºC, a modelreaction to evaluate the potential of these catalysts for biodiesel production. The highest activity was found for aSnO2/SBA-15 wt% of 20%, with conversion percentage of 70%. The effects of calcinations temperature, reaction time,reaction temperature, methanol/n-butyl acetate molar ratio and catalyst recycling were investigated.

کلیدواژه ها:

nanoparticle of tin oxide ، SBA-15 ، Biodiesel ، Transestrification of n-butyle acetate ، Hetrogeneous catalysis