CD Skripsi

Sintesis Dan Karakterisasi Katalis Cao-Sio2 Dari Cangkang Kerang Darah Dan Abu Sabut Pinang Suhu Kalsinasi 700OC Untuk Produksi Biodiesel

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Calcium oxide (CaO) is a catalyst that is widely used for biodiesel synthesis reactions, but the CaO catalyst has the weakness of a low surface area. Therefore, to increase biodiesel yield the CaO catalyst needs to be modified using silica to increase the catalyst surface area and catalytic activity. The aim of this research is to synthesize and characterize the CaO catalyst modified by SiO2 areca palm ash using the impregnation method with variations in the SiO2 ratio of 3, 5 and 7% w/w to the weight of CaO. The resulting catalyst was applied to biodiesel production by optimizing yield using the Response Surface Methodology (RSM) design. The catalysts was characterized using Brunauer-Emmett-Teller (BET) analysis, X-Ray diffraction (XRD) analysis, X-Ray Fluorescence (XRF) analysis and Fourier Transform Infra Red (FTIR) analysis. Analysis using BET shows that the surface area has increased from the CaO-SiO2 3% catalyst to the CaO-SiO2 5% catalyst and decreased for the CaO-SiO2 7% catalyst. The results of FTIR analysis show the presence of OH functional groups, O-C-O symmetric stretching vibrations, Si-O stretching vibrations, Si-O-Si stretching vibrations, and Ca-O bonds. XRF analysis for SiO2 increased from CaO-SiO2 3% to CaO-SiO2 5% catalyst and decreased to CaO-SiO2 7% catalyst and the composition of CaO decreased. XRD analysis shows the presence of portlandite Ca(OH)2 and Lime CaO minerals. Based on analysis with RSM, the yield of CaO-SiO2 3%, 5%, and 7% catalyst biodiesel did not experience much difference. Optimum results with RSM, the highest biodiesel yield was obtained using a CaO-SiO2 5% catalyst with a catalyst weight of 2 g, an oil:methanol mole ratio of 1:6 and a reaction time of 60 minutes with a biodiesel yield of 94.90%. The characteristics of biodiesel produced from a CaO-SiO2 5% catalyst have a water content of 0.036%, a specific gravity of 881 kg m-3, a viscosity of 2.52 mm2 s-1, a carbon residue of 0%, an acid number of 1.4 mg KOH g-1. The characterization results show that all biodiesel meets SNI 7182-2015, except for acid number does not meet SNI standards.

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Ketersediaan

Informasi Detail

Judul Seri

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No. Panggil

1803110919

Penerbit

Pekanbaru : Universitas Riau – FMIPA – Kimia., 2023

Deskripsi Fisik

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Bahasa

Indonesia

ISBN/ISSN

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Klasifikasi

1803110919

Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

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Subjek

KIMIA

Info Detail Spesifik

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Pernyataan Tanggungjawab

Mutia

Versi lain/terkait

Lampiran Berkas

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