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

Authors : Veli ŞİMŞEK, Kırali MÜRTEZAOĞLU

Pages : 422-432

Doi:10.18038/aubtda.357270

View : 21 | Download : 5

Publication Date : 2018-06-30

Article Type : Research Paper

Abstract :Mesoporous materials functionalized with STAinsert ignore into journalissuearticles values(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 STAinsert ignore into journalissuearticles values(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% insert ignore into journalissuearticles values(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-41insert ignore into journalissuearticles values(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