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Title: Microwave-assisted catalytic transesterification of soybean oil using KOH/gamma-Al2O3
Authors: Varol, Pelin Mısıroğlu
Çakan, Alattin
Kiren, Burcu
Ayaş, Nezihe
Keywords: Biodiesel
Soybean oil
Microwave irradiation
Heterogeneous catalyst
Issue Date: 2021
Publisher: Springer Heidelberg
Abstract: The present study deals with potassium hydroxide (KOH) impregnated alumina catalysts and tested in biodiesel production with different configurations to optimize catalyst preparation conditions and transesterification reaction. To this aim, a series of KOH/gamma-Al2O3 was synthesized with numerous amounts of KOH loading (15, 20, 25, 30, 35, 40 wt.%), at different calcination times (2, 3, 4 h) and calcination temperature (400, 500, 600 degrees C). Besides, the transesterification process was also performed under different heating methods, namely, conventional heating and microwave heating. The structure and textural characteristics of the catalysts were elucidated through X-ray diffraction (XRD), Brunauer-Emmett-Teller (BET), scanning electron microscopy (SEM), and X-ray fluorescence (XRF) analysis. The catalyst prepared with 30 wt.% KOH content, calcined at 400 degrees C for 3 h, was noted as the suitable catalyst, attaining 97.30% FAMEs content (conversion). The corresponding operating conditions were when the process temperature was 65 degrees C, catalyst loading of 3 wt.%, methanol to oil molar ratio of 12:1, and reaction duration of 35 min using microwave heating system.
ISSN: 2190-6815
Appears in Collections:Porsuk Meslek Yüksekokulu Yayın Koleksiyonu
Scopus İndeksli Yayınlar Koleksiyonu
WoS İndeksli Yayınlar Koleksiyonu

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