Reaction Kinetic Study of Biodiesel Production from Fatty Acids Esterification with Ethanol

Abstract

The kinetic of fatty acids esterification with ethanol utilizing niobium oxide catalyst (79.8% of NbO5 and 19.6% of water) for the production of biodiesel was analyzed through a reversible kinetic modeling for the determination of the kinetic and thermodynamic data of the reactions. The reactions were carried out with three kinds of fatty acids (stearic, palmitic, and lauric) with anhydrous and hydrated ethanol. From the kinetic study it was possible to calculate the theoretical equilibrium data which were compared to experimental data of each reaction. From the comparison between the experimental and calculated conversions it was possible to analyze the accuracy of the estimations, providing a good way to apply statistical treatments in the improvement of the kinetic and thermodynamic properties calculated.

Kinetika Reaksi Esterifikasi Minyak Biji Kapuk Pada Pembuatan Biodiesel

“…[5] telah meneliti pemanfaatan biji kapuk yang merupakan limbah industri kapuk untuk pembuatan bahan bakar alternatif biodiesel. Kinetika reaksi Etanolisis minyak jarak dengan katalisator NaOH dan penambahan garam dapur pada tekanan di atas satu atm telah dilakukan [6].Penelitian kinetika reaksi Chemica Volume 1, Nomor 1, Juni 2014, 11-18 ISSN : 2355 pembuatan biodiesel dengan esterifikasi asam lemak dengan katalis neobium okside telah diteliti oleh [7]. Dalam penelitian ini akan ditentukan kinetika reaksi pembuatan biodiesel dari minyak biji kapuk dengan pross tranesterifikasi dengan katalis KOH.…”

Zeolite-Based Catalysts: A Valuable Approach toward Ester Bond Formation

“…Given their significance, esterification procedures should occupy an outstanding site in the desire to advance safe and sustainable chemical technologies into various industrial practices. Traditionally, esterifications are performed in presence of homogeneous acid catalysts, such as HCl, H 2 SO 4 , phosphoric acid, p-toluenesulfonic acid, HF, AlCl 3 , BF 3 , and ZnCl 2 as well as base catalysts, such as KOH and NaOH or methoxide [3][4][5][6]. However, the utilization of these homogeneous catalytic processes is not favorable for practical applications, due to their toxicity, corrosivity, non-reusability, and non-recyclability.…”

Kinetics of Transesterification of Safflower Oil to Obtain Biodiesel Using Heterogeneous Catalysis

“…In addition, heterogeneous catalysts are reusable and have a lower environmental impact (Zhang et al 2010, Cao et al 2008). Actually, high methyl esters yields (> 90 %) have been obtained with heterogeneous basic catalysts like K 2 Kim et al 2004). Also, it is worth pointing out that in order to overcome the mixing problems, the use of co-solvents like n-hexane, has been proven to enhance up to 10 % the biodiesel yield (Kim et al 2004).…”