Electronic Theses and Dissertation

Penelitian tentang preparasi katalis heterogen Cu/Zeolit serta uji aktivitasnya pada reaksi biodiesel telah dilakukan. Preparasi katalis dilakukan dengan mengimpregnasikan logam Cu ke dalam zeolit. Katalis Cu/Zeolit dikarakterisasi dengan menggunakan X-Ray Diffraction (XRD) menunjukan material didominasi oleh senyawa SiO2 dan AlNaO8Si3. Scanning Electron Microscopy dan Energy Dispersiv Sprektroscopy (SEM-EDS) menunjukan bahwa setelah ditambahkan logam Cu, bentuk permukaan dari zeolit menjadi lebih tertata dan meningkatkan luas permukaan dari katalis. Biodiesel yang dihasilkan dikarakterisasi menggunakan Gas Chromatography Mass Spektofotometer GC-MS dan reaksi transesterifikasi untuk menghasilkan metil ester berhasil dilakukan. Komposisi metil ester yang terbentuk didominasi oleh metil oleat. Biodiesel yang dihasilkan memiliki bilangan asam yang relative rendah, yaitu berkisar 0,14 – 0,24 mg-KOH/g dan hasil ini sesuai dengan Standar Nasional Indonesia (SNI). Nilai densitas yang didapat 0,786 – 0,796g/mL, nilai viskositas yang didapat 1,3 – 1,4 cSt dan hasil ini tidak memenuhi standar SNI

Research on the preparation of Cu/Zeolite heterogeneous catalysts and testing their activity in production of biodiesel has been carried out. The catalyst preparation was carried out by impregnating Cu metal into the zeolite. The Cu/Zeolite catalyst was characterized using X-Ray Diffraction (XRD) showing that the material was dominated by SiO2 and AlNaO8Si3 compounds. Scanning Electron Microscopy and Energy Dispersive X-ray (SEM-EDX) showed that after adding Cu metal, the surface shape of the zeolite became more organized and increased the surface area of the catalyst. The resulting biodiesel was characterized using Gas Chromatography Mass Spektofotometer (GC-MS) and the transesterification reaction to produce methyl ester was carried out successfully. The composition of the methyl ester formed is dominated by methyl oleate. The resulting biodiesel has a relatively low acid number, which is in the range of 0.14 – 0.24 mg-KOH/g and this result is in accordance with Indonesia National standards (SNI). The density values obtained were 0.786 – 0.796g/mL, the viscosity values obtained were 1.3 – 1.4 cSt and these results did not meet SNI standards