Dawam, Ahmad Anwarud (2017) Aluminosilikat Mesopori dari Red Mud sebagai Katalis Esterifikasi Asam Lemak Bebas dalam Minyak Kemiri Sunan. Masters thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Pada penelitian ini FFA dalam kemiri sunan diesterifikasi dengan katalis asam aluminosilikat mesopori (ASM) yang disintesis dari red mud. Penelitian ini terbagi menjadi beberapa bagian yaitu ekstraksi alumina, sintesis, dan uji aktivitas katalitik. Alumina dalam red mud dipisahkan melalui metode alkali fusi pada suhu 450 – 500 °C, hasil analisa XRF menunjukkan bahwa pada suhu 450 °C silika pada red mud lebih mudah terekstraksi. Produk fusi kemudian digunakan dalam sintesis katalis ASM melalui metode hidrotermal pada suhu 80 °C selama 24 jam, dan CTABr digunakan sebagai template pengarah mesopori. Padatan hasil sintesis memiliki fase amorf yang dibuktikan dengan XRD, dan SEM. Analisa FTIR menunjukkan karakteristik dari material aluminasilika, dan Uji keasaman menunjukkan ASM memiliki sisi asam Brønsted dan Lewis. Uji aktivitas katalisis dari ASM hasil sintesis dilakukan pada reaksi esterifikasi asam lemak bebas dalam kemiri sunan menggunakan metanol pada suhu 60 °C. Parameter reaksi seperti, rasio minyak:metanol (1/9, 1/18, 1/27), waktu reaksi (30–120 menit), dan loading katalis (2,5 %, 5 %, 10 %) divariasi untuk mempelajari pengaruh tiap parameter. Konversi FFA paling tinggi dihasilkan pada rasio minyak:metanol 1/18, waktu reaksi 120 menit, dan loading katalis 5 %.
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In this reserach FFA in kemiri sunan was reduced by esterification process with an acid catalyst mesoporous aluminosilicate (ASM) that synthesized from red mud. This study is divided into several parts, namely alumina extraction, synthesis, and test catalytic activity. Alumina content in red mud is separated through the alkali fusion method at temperature 450-500 °C, XRF analysis shows silica at red mud more easily extracted at temperature 450 °C. The fusion product then used in ASM synthesis via hydrothermal method at 80 °C for 24 hours, and CTABr is used as a mesoporous directing template. The synthesized solid has an amorphous phase as evidenced by XRD, SEM, and TEM. The FTIR analysis shows the characteristic of aluminasilicate material, and the acidity test indicates that ASM has Brønsted and Lewis acid site. The catalytic activity was studied on the esterification reaction of free fatty acids in kemiri sunan using methanol at temperature 60 °C. Reaction parameters such as ratio of oil:methanol (1/9, 1/18, 1/27), the reaction time (30-120 minutes), and catalyst loading (2.5 %, 5 %, 10 %), was varied to study the effects of each parameter. The highest FFA conversion is produced on the ratio of oil:metanol 1/18, reaction time 120 minutes, and catalyst loading 5 %.
| Item Type: | Thesis (Masters) |
|---|---|
| Additional Information: | RTKi 546.673 593 Daw a-1 3100018074168 |
| Uncontrolled Keywords: | aluminosilikat mesopori, esterifikasi, red mud, Reutalis trisperma oil |
| Subjects: | Q Science > QD Chemistry Q Science > QD Chemistry > QD181.S6 A4 Aluminum silicates Q Science > QD Chemistry > QD501 Catalysis. Catalysts. |
| Divisions: | Faculty of Mathematics and Science > Chemistry > 47101-(S2) Master Thesis |
| Depositing User: | Dawam Ahmad Anwarud |
| Date Deposited: | 19 Feb 2018 03:35 |
| Last Modified: | 20 Apr 2020 19:45 |
| URI: | http://repository.its.ac.id/id/eprint/49213 |
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