Characterizations and Catalytic Activities Investigation of Synthesized Solid-Based Heterogeneous Catalysts in the Esterification Reaction

Year 2018, Volume: 19 Issue: 2, 422 - 432, 30.06.2018

Veli Şimşek , Kırali Mürtezaoğlu

https://doi.org/10.18038/aubtda.357270

Cited By: 2

Abstract

Mesoporous materials functionalized with STA(Silicotungstic acid) have
been proved to be efficient catalysts for esterification reactions. In the
investigation, impregnation method was applied for the synthesis of STA/MCM-41
catalysts. MCM-41 and STA(Silicotungstic acid) were used to silica source and
active material respectively. The active material was loaded by
dry-impregnation method after silica source. Molar ratios of catalysts were
determined by 1.25, 2.5 and 5% (W/Si). Actually, this molar ratio values are
very low for the impregnation method. But catalysts were successfully
synthesized by applying impregnation method. And catalytic activities of
STA/MCM-41 catalysts were investigated with an ethyl acetate reaction. On the
other hand, the second reaction of STA/MCM-41(2.5%) catalyst was carried out in
the presence of under identical conditions after the first reaction. Before and
after reactions, the physical properties of the catalysts were determined by
XRD, DRIFT, BET, SEM and Mapping analysis methods. 

Keywords

Catalyst, Impregnation, STA/MCM-41, Catalytic activity

References

• Doç. Dr. Dilek VARIŞLI, [e-mail] - Doç.Dr. Filiz DEREKAYA, [e-mail] - Prof.Dr. H. Cannan CABBAR, [e-mail]