Wulandari, Futri (2016) Sintesis Dan Karakterisasi Aluminosilikat Mesopori Dari Red Mud Pulau Bintan Sebagai Sumber Alumina. Masters thesis, Institut Teknologi Sepuluh Nopember Surabaya.
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Abstract
Pada penelitian ini, aluminosilikat mesopori telah berhasil disintesis dengan
menggunakan red mud Pulau Bintan Kepulauan Riau sebagai sumber alumina.
Metode alkali fusi dengan variasi rasio NaOH/RM (0,8; 1,0; 1,2; 1,4 dan 1;5)
dilanjutkan dengan hidrolisis dilakukan untuk mengekstrak alumina dan silika
terlarut dari red mud. Sintesis aluminosilikat mesopori dilakukan dengan rasio
sintesis 1 SiO2 : 0,0125 Al2O3 : 0,2 TPAOH : 38 H2O. Sintesis dilakukan dengan
metode hidrotermal pada suhu 80 °C selama 24 jam. Pembentukan mesopori
dilakukan dengan penambahan CTABr (rasio SiO2/CTABr = 3,85) sebagai agen
pengarah struktur meso. Padatan aluminosilikat yang dihasilkan dikarakterisasi
menggunakan spektroskopi FTIR (Fourier Transform Infra Red Spectroscopy),
FTIR-piridin, XRD (X-ray Diffraction), SEM (Scanning Electron Microscopy),
dan adsorpsi-desorpsi nitrogen. Hasil XRD dan SEM memperlihatkan bahwa
semua produk aluminosilikat mesopori yang dihasilkan merupakan padatan amorf
dengan morfologi dan ukuran partikel tidak seragam. Profil adsorpsi-desorpsi
nitrogen menunjukkan bahwa semua sampel aluminosilikat mesopori yang
dihasilkan merupakan padatan mesopori, yang dikonfirmasi dengan distribusi pori
tertinggi pada 3,05-17,70 nm. Luas permukaan mesopori dan volume pori
terbesar diperoleh pada sampel ASM 0,8 (NaOH/red mud ratio = 0,8) yaitu
sebesar 177,97 m2/g dan 1,09 cm3/g
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In this study, mesoporous aluminosilicates had been synthesized using
Bintan’s red mud as alumina source. Alkali fussion method with an NaOH/red
mud ratio (0,8; 1,0; 1,2; 1,4 and 1,5) followed by hydrolysis method was used to
extract dissolved alumina and silica from red mud. Mesoporous aluminosilicates
was synthesized with a molar ratio of 1SiO2 : 0,0125Al2O3 : 0,2TPAOH : 38H2O,
using hydrothermal method at 80 °C for 24 h. Formation of mesoporous structure
by adding cetyltrimethylammonium bromide, CTABr (SiO2/CTABr = 3,85) as the
structure directing agent. Mesoporous aluminosilicate were characterized using
FTIR spectroscopy (Fourier Transform Infra Red Spectroscopy), FTIR-pyridine,
XRD (X-ray Diffraction), SEM (Scanning Electron Microscopy) and nitrogen
adsorption-desorption. XRD and SEM result shows that all mesoporous
aluminosilicates product is amorphous with low uniformity in terms of surface
morphology and particle size. XRD and SEM results shows that all
aluminosilicates producted are amorphous with uniformity in terms of surface
morphology and particle size. Nitrogen adsorption-desorption profile show that all
aluminosilicates product has a meso pore structure, confirmed by the highest pore
distribution at 3,05-17,70 nm. The highest surface area and pore volume were
obtained in ASM 0,8 (NaOH/red mud ratio = 0,8) i.e. 177,97 m2/g and 1,09 cm3/g,
respectively
| Item Type: | Thesis (Masters) |
|---|---|
| Additional Information: | RTKi 546.673 593 Wul s |
| Uncontrolled Keywords: | Red mud, aluminosilikat mesopori, alkali fusi, CTABr |
| Subjects: | Q Science > QD Chemistry > QD181.S6 A4 Aluminum silicates |
| Divisions: | Faculty of Science and Data Analytics (SCIENTICS) > Chemistry > 47101-(S2) Master Thesis |
| Depositing User: | EKO BUDI RAHARJO |
| Date Deposited: | 02 Sep 2020 05:20 |
| Last Modified: | 02 Sep 2020 05:20 |
| URI: | http://repository.its.ac.id/id/eprint/81721 |
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