Open AccessGLYCEROLYSIS USING KF/CAO-MGO CATALYST: OPTIMISATION AND REACTION KINETICS
Author(s) -
Luqman Buchori,
Mohamad Djaeni,
Rhenny Ratnawati,
Diah Susetyo Retnowati,
Hadiyanto Hadiyanto,
Didi Dwi Anggoro
Publication year - 2020
Publication title -
jurnal teknologi/jurnal teknologi
Language(s) - English
Resource type - Journals
eISSN - 2180-3722
pISSN - 0127-9696
DOI - 10.11113/jt.v82.14585
Subject(s) - monoglyceride , catalysis , chemistry , glycerol , kinetics , yield (engineering) , base (topology) , response surface methodology , heterogeneous catalysis , reaction rate , nuclear chemistry , chromatography , organic chemistry , materials science , metallurgy , mathematical analysis , fatty acid , physics , mathematics , quantum mechanics
Monoglycerides can be produced through glycerolysis using a heterogeneous catalyst. The purpose of this study is to analyse the optimum conditions for the production of monoglycerides from glycerol and cooking oil using KF/CaO-MgO base catalysts and to investigate the kinetics of the monoglyceride glycerolysis reaction. The response surface method (RSM) was used to determine the favourable conditions by varying the catalyst amount (X1) between 0.1, 0.2 and 0.3% (w/w); the reaction temperature (X2) between 210, 220 and 230°C and reaction time (X3) between 2, 3 and 4 hours. Gas chromatography-mass spectrometry (GC-MS) was used to determine the monoglycerides, while catalysts were characterised by X-ray diffraction (XRD) and the Brunauer-Emmett-Teller method (BET). The results showed that, among the three factors examined, temperature shows the most control over this glycerolysis reaction. The most favourable conditions are X1 = 0.19% (w/w), X2 = 208.37°C and X3 = 3.20 hours, which provide a monoglyceride yield of 41.58%. The constants for the reaction kinetics of the monoglyceride formation, k1 and k2 are 1.04189 and 0.88965 hour-1, respectively.