Sari, Putri Kartika (2023) Pengaruh Penambahan NaOH Pada Sintesis Zeolit NaY Dari Ekstrak Lerak (Sapindus Rarak) Sebagai Katalis Pada Reaksi Deoksigenasi Minyak Goreng Bekas. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Zeolit NaY telah berhasil disintesis dengan menggunakan lerak (sapindus rarak) sebagai templat organik yang disintesis dengan metode hidrotermal pada suhu 100 oC selama 24 jam. Penambahan HCl berpengaruh pada pembentukan misel dengan melalui penurunan kelarutan zat terlarut organik dalam air dan NaOH sebagai sumber alkali Na+ dan membantu proses kristalisasi. X ray Diffraction (XRD) menunjukkan pada L NaOH-0 (zeolit tanpa penambahan NaOH) dan L NaOH-1 (zeolit dengan penambahan NaOH 0,025 mol) terbentuknya zeolit NaY. Derajat kristalinitas tertinggi pada L NaOH-1 yakni sebesar 32,67% yang menandakan kemurnian tinggi dan memiliki kristalinitas yang baik. Pengaruh NaOH dalam reaksi yakni untuk membantu proses kristalinitas, semakin bertambah kosentrasi NaOH maka akan memiliki derajat kristalinitas yang tinggi yang menandakan terbentuknya kristal. Karakterisasi Scanning Microscopy (SEM) menunjukkan pada L NaOH-1 memiliki morfologi bulat dan bentuk yang tidak seragam dan saling menempel (agregrat) sedangkan pada L NaOH-0 dan L NaOH-0.5 (Zeolit penambahan NaOH 0,0125 mol ) memiliki bentuk tidak seragam dan agregrat. FTIR-piridin pada L NaOH-1, L NaOH-0, L NaOH-0.5 memiliki jumlah sisi asam masing-masing sebesar 11,87; 5,67; dan 3,81 mmol/g. Situs asam Lewis dan Brønsted bertanggung jawab atas aktivitas katalitik sampel sehingga pada L NaOH-1 memiliki aktivitas katalitik yang baik. Luas permukaan tertinggi pada L NaOH-1 sebesar 494,98 m2/g. Kemudian dilakukan pengujian katalitik dengan reaksi deoksigenasi pada minyak goreng bekas (WCO) pada suhu 350 oC selama 4 jam. Hasil reaksi menunjukkan bahwa yield cair tertinggi pada L NaOH-1 sebesar 30,19% dengan selektivitas hidrokarbon sebesar 56,30%.
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Zeolite NaY have been successfully synthesized using lerak (sapindus rarak) as an organic template by hydrothermal method at 100 oC for 24 hours. The additional of HCl affects the formation of micelles by decreasing the solubility of organic solutes in water and NaOH as a source of Na+ alkali and helps the crystallization process. X Ray Diffarction (XRD) showed the formation of NaY zeolite at L NaOH-0 (zeolite without the addition of NaOH) and L NaOH-1 (zeolite with the addition of 0,025 mol NaOH). The highest degree of crystallinity in L NaOH-1 is 32,67% which indicates high purity and has good crystallinity. The effect of NaOH in reaction to help the crystallinity process, the increasing concentration of NaOH will have a high degree of crystallinity which indicates the formation of crystals. Scanning Microscopy (SEM) characterization shows that L NaOH-1 has a round morphology and a non-uniform shape and sticks together (aggrates) while L NaOH-0 and L NaOH-0.5 have a non uniform and aggrate shape. FTIR-pyridine in L NaOH-1, L NaOH-0, L NaOH-0.5 has the number of acidic sides of 11,87:5,67: and 3,81 mmol/g. Lewis and Brønsted acid sites are responsible for the catalytic activity of samples so that L NaOH-1 has good catalytic activity. The highest surface area at L NaOH-1 was 494,98 m2/g. Then catalytic testing was carried out with deoxygenation reaction on waste cooking oil (WCO) at 350 oC for 4 hours. The reaction result showed that the highest liquid yield on L NaOH-1 (zeolite with the addition of 0,0125 mol NaOH) was 30,19% with hydrocarbon selectivity of 56,30%.
Item Type: | Thesis (Other) |
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Uncontrolled Keywords: | Zeolit NaY, NaOH, Lerak (Sapindus Rarak), Reaksi deoksigenasi, Keasaman permukaan; Zeolite NaY, NaOH, Lerak (Sapindus Rarak), Reaction Deoxygenation, Surface acidity |
Subjects: | Q Science Q Science > QD Chemistry Q Science > QD Chemistry > QD181.S6 A4 Aluminum silicates |
Divisions: | Faculty of Science and Data Analytics (SCIENTICS) > Chemistry > 47201-(S1) Undergraduate Thesis |
Depositing User: | Putri Kartika Sari |
Date Deposited: | 30 Aug 2023 08:46 |
Last Modified: | 30 Aug 2023 08:46 |
URI: | http://repository.its.ac.id/id/eprint/102729 |
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