MAGNETIC MESOPOROUS SILICA NANOCOMPOSITE DECORATED WITH HETEROPOLY TUNGSTIC ACID AS HIGHLY EFFICIENT AND STABLE CATALYST FOR BIODIESEL PRODUCTION

Year 2020, Volume: 21 Issue: 2, 335 - 349, 15.06.2020

Beyhan Erdem , Kübra Bilgin

https://doi.org/10.18038/estubtda.657085

Abstract

A multifunctional heterogeneous acid catalyst named as spFe3O4@SBA-15@HPW was prepared, which consists of versatile properties such as magnetic separability, high conversion efficiency and reusability. This catalyst was characterized by XRD, FT-IR, VSM, TEM and SEM/EDX techniques with respect to structural, morphological and magnetic properties. The catalyst showed higher catalytic activity than the commercial catalysts such as Amberlyst-15 and Dowex 50Wx4 and also heteropoly tungstic acid (HPW) alone in terms of conversion of oleic acid for biodiesel production by the esterification of oleic acid with methanol. The experimental data were correlated by pseudo-first-order homogeneous and Eley-Rideal heterogeneous models, and the results demonstrate the suitability of Eley-Rideal mechanism.

Keywords

Magnetic nanocomposite, heterogeneous catalyst, phosphotungstic acid, biodiesel

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