Publication: Synthesis of carbide lime derived strong base catalyst for biodiesel production
Date
2021
Authors
Lim H.H.
Pua F.L.
Rohaya O.
Taufiq-Yap Y.H.
Sharifah N.
Journal Title
Journal ISSN
Volume Title
Publisher
Trans Tech Publications Ltd
Abstract
Carbide lime is a result of acetylene production. Carbide lime made out of calcium hydroxide with a minor amount of calcium carbonate. In this study, carbide lime was used as the raw material to synthesize a new base catalyst with high base strength. A strong base catalyst was prepared through calcination and impregnation with potassium fluoride. The structure and morphology of catalyst were investigated by X-ray powder diffraction (XRD) and scanning electron microscopy (SEM) The base strength was determined by Hammett Indicator test, temperature-programmed desorption of carbon dioxide (TPD-CO2). The surface area of the catalyst was determined by Brunauer-Emmet-Teller isotherm (BET). The catalytic performance was examined through a transesterification reaction. Fatty acid methyl ester (FAME) was successfully synthesized with the presence of carbide lime derived catalyst. The highest biodiesel conversion rate for sunflower oil was 95.83% with 6 wt% of catalyst loading, while palm oil was 88.07% with 3 wt% of catalyst loading. The presence of the ester functional group was determined by Fourier Transform Infrared Spectroscopy (FTIR) analysis. � 2021 Trans Tech Publications Ltd, Switzerland.
Description
Biodiesel; Calcium carbonate; Calcium fluoride; Carbon dioxide; Esters; Fatty acids; Fourier transform infrared spectroscopy; Hydrated lime; Lime; Morphology; Palm oil; Potassium compounds; Scanning electron microscopy; Sunflower oil; Temperature programmed desorption; Transesterification; Base catalyst; Base strength; Biodiesel production; Carbide lime; Catalyst loadings; Structure and morphology; Temperature-programmed desorptions; Test temperatures; Transesterifications; ]+ catalyst; Catalysts