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Title : Silica-Based Solid Acid Catalyst with Different Concentration of H2SO4 and Calcination Temperature: Preparation and Characterization
Author :

ANEU (1) Prof. Dr. rer. nat. Karna Wijaya, M.Eng. (2) Akhmad Syoufian, Ph.D. (3)
Date : 25 2020
Keyword : lid acid catalyst,Mesoporous silica,Tetraethyl ortho silicate,Sulfuric acid,Calcination temperature lid acid catalyst,Mesoporous silica,Tetraethyl ortho silicate,Sulfuric acid,Calcination temperature
Abstract : Silica-based solid acid catalysts have been successfully prepared and characterized. This research aimed to study the effect of sulfuric acid and calcination temperature on the properties of silica-based solid acid catalyst chemically and physically. The catalyst was synthesized with tetraethyl ortho silicate (TEOS) as precursor of SiO2 through the sol gel method using sulfuric acid (H2SO4) with various concentrations (1 M, 2 M, and 3 M). Next, the gel formed was calcined with various temperatures (500, 600, 700, 800, and 900 °C). The synthesized sample was then tested for total acidity determination and was characterized using various instrumentations: FTIR, XRD, Gas Sorption Analyzer (GSA), and SEM. The total acidity increased with the increasing acid concentration and calcination temperature up to 700 °C. The N2 adsorption-desorption data showed a relatively large surface area 410,97 m2/g which can provide space for catalytic reaction for fatty acids. The catalytic study was carried out for esterification reaction using reflux system to reduce free fatty acids (FFA) content up to 49% and be possibly to be selected as pretreatment step for low grade feedstock biodiesel conversion
Group of Knowledge : Kimia
Original Language : English
Level : Internasional
Status :
Published
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