Abstract
Triasetin is a bioaditif to increase the octane number of the gasoline. Triasetin was generated from the reaction between giserol and acetic acid. Glycerol is a byproduct of biodiesel production. Triasetin production can reduce glycerol which is actually a waste by converting it into bioaditif having higher value. The reaction can be accelerated by addition of catalysts either solid or liquid catalyst. The reaction in this study used a solid catalyst types Silica Alumina. The reaction takes place in the three-neck flask reactor which is equipped with heating unit, mixers, and tools to take samples at regular intervals. Variables used in this research is the variety of reaction time and the reaction temperature (70, 80, 90, 100, and 1100C). The concentration of triasetin obtained will be known through the analysis of Gas Chromatography - Mass Spectrometry (GC-MS). The results of the analysis of GC or GC-MS treated or counted so getting glycerol conversion and selectivity of triasetin. The highest glycerol conversion 8,45% occurs at a temperature of 700C the reaction time of 90 minutes with triasetin selectivity 100%.
Highlights
Triasetin is a bioaditif to increase the octane number of the gasoline
Triasetin was generated from the reaction between giserol
Glycerol is a byproduct of biodiesel production
Summary
Sejarah Artikel: Diterima November 2016 Disetujui Desember 2016 Dipublikasikan Desember 2016. Triasetin adalah salah satu bioaditif untuk meningkatkan angka oktan pada bahan bakar minyak. Triasetin dihasilkan dari reaksi antara giserol dan asam asetat dimana gliserol dapat diperoleh dari hasil samping pembuatan biodiesel. Sehingga pembuatan triasetin ini dapat mengurangi produk gliserol yang notabene adalah limbah dengan mengubahnya menjadi bioaditif yang memiliki nilai kemanfaatan yang lebih tinggi. Reaksi triasetin pada penelitian ini akan menggunakan katalis padat jenis Silica Alumina. Variabel yang digunakan dalam penelitian ini ialah variasi waktu reaksi dan suhu reaksi (70, 80, 90, 100, dan 1100C). Konsentrasi triasetin yang didapat diketahui melalui analisis Gas Chromatography – Mass Spectrometry (GC-MS). Hasil analisis GC atau GC-MS diolah sehingga mendapatkan konversi gliserol dan selektivitas triasetin. Konversi gliserol tertinggi didapat pada suhu 700C pada waktu reaksi 90 menit sebesar 8,45% dengan selektivitas triasetin mencapai 100%
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