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SINTESIS DAN KARAKTERISASI KATALIS La2O3/ZEOLIT ALAM DAN APLIKASINYA DALAM PROSES TRANSESTERIFIKASI MINYAK KELAPA SAWIT MENJADI BIODIESEL
This study was conducted to synthesize La2O3/Natural Zeolite catalysts and determine the characterization of each catalyst using Fourier Transform Infra-Red (FTIR) and X-ray Diffraction (XRD), and apply them in biodiesel transesterification reactions. The catalyst was synthesized through the stages of making acid-activated natural zeolite, followed by heating lanthanum oxalate at a reaction temperature of 900oC for 3 hours to form lanthanum oxide (La2O3) compounds. The synthesis of La/NZA catalysts was carried out through the impregnation process of La2O3 metal with variations in catalyst mass (1%, 3%, and 5%) and two other catalysts (natural zeolite Activated (NZA) and La2O3) as standard catalysts in biodiesel applications. The results of XRD testing showed that the NZA peak was successfully formed at an angle of 2θ: 22,25o; 25,61o; 27,79o; 26,68o while the La2O3 peak is formed at an angle of 2θ: 13,57o. Based on the FTIR results, a typical La-O absorption is seen at a wave number of 464 cm-1 which indicates the successful impregnation of La metal into the zeolite framework. In addition, the symmetric stretching vibration group O-Si-O/Al-O was identified at 796 cm-1, as well as the asymmetric stretching vibration -O-Si-O- at 1035 cm-1. The transesterification reaction was carried out at a temperature of 60°C for 2 hours with a mole ratio of oil and methanol of 1:9 and the addition of 2% catalyst. Biodiesel produced with 3% La/NZA catalyst showed the highest yield of 71.77%. Based on GC-MS testing, biodiesel from palm oil with 3% La/NZA catalyst has a methyl ester composition of 100%, with elaidate methyl ester as the dominant component. Testing of water content and density of biodiesel with variations of each catalyst (NZA, La2O3, 1% La/NZA, 3% La/NZA, and 5% La/NZA) mostly showed results according to SNI 7182:2015 standards. This study shows that the La2O3/Natural Zeolite catalyst is effective for use in biodiesel production from palm oil.
FAKULTAS SAINS DAN TEKNOLOGI, UIN SUNAN KALIJAGA YOGYAKARTA
SINTESIS DAN KARAKTERISASI KATALIS La2O3/ZEOLIT ALAM DAN APLIKASINYA DALAM PROSES TRANSESTERIFIKASI MINYAK KELAPA SAWIT MENJADI BIODIESEL (Text)
SINTESIS DAN KARAKTERISASI KATALIS La2O3/ZEOLIT ALAM DAN APLIKASINYA DALAM PROSES TRANSESTERIFIKASI MINYAK KELAPA SAWIT MENJADI BIODIESEL (Other)
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