Konversi Sitronelal Menjadi Senyawa Isopulegol dengan Katalis ZnBr2/β-Zeolit

Khoirun Nisyak, Elvina Dhiaul Iftitah, Rachmat Triandi Tjahjanto

Abstract


Pada penelitian ini telah dilakukan konversi sitronelal menjadi senyawa isopulegol melalui mekanisme reaksi siklisasi dengan katalis ZnBr2/β-Zeolit. Sitronelal diisolasi dari minyak sereh wangi dengan metode distilasi fraksional. Katalis ZnBr2/β-Zeolit dibuat dengan metode impregnasi pada temperatur 400 ºC di bawah aliran gas nitrogen selama 4 jam. Reaksi konversi sitronelal dilakukan dengan metode one-pot synthesis dengan aliran gas nitrogen pada temperatur 120 ºC. Karakterisasi katalis ZnBr2/β-Zeolit dilakukan dengan analisa X ray- Diffraction (XRD) dan Scanning Electron Microscopy- Energy Dispersive X-ray (SEM-EDX). Karakterisasi produk reaksi dilakukan kromatografi gas (GC) dan Gas Chromatography-Mass Spectroscopy (GC-MS). Berdasarkan hasil penelitian, katalis ZnBr2/β-Zeolit memberikan aktivitas lebih baik dibandingkan β-Zeolit, dimana nilai konversi sitronelal menjadi isopulegol sebesar 100% dengan selektivitas terhadap senyawa isopulegol sebesar 75,28% pada temperatur 120 0C dan waktu reaksi 60 menit.


Keywords


Minyak sereh wangi; Sitronellal; Reaksi siklisasi; Katalis ZnBr2/β-Zeolit; Isopulegol

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DOI: http://dx.doi.org/10.24817/jkk.v39i2.3306

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