Wardani, Dianita (2014) Sintesis sebuk Al2O2 menggunakana metode logam- terlarut asam. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Dalam Tugas Akhir ini telah dilakukan sintesis serbuk
Al2O3 dengan variasi temperatur dan penambahan polietilen
glikol (PEG). Bahan dasar yang digunakan dalam penelitian ini
adalah serbuk aluminium (Al Merck), larutan HCl (Merck 37%)
dan sebagai templat (gugus 400 dan 1000, disingkat PEG400 dan
PEG1000). Sintesis Al2O3 ini dilakukan dengan menggunakan
metode logam-terlarut asam dengan waktu kalsinasi 1 jam pada
variasi temperatur 100 ̊C, 300 ̊C, 900 ̊C, 1000,1050 dan 1100
setelah mempertimbangkan data DTA-TG serbuk hasil
pengeringan. Karakterisasi dilakukan dengan instrumen X-Ray
Diffractometer (XRD). Analisis data XRD meliputi identifikasi
fasa, perhitungan komposisi fasa dan estimasi ukuran kristal.
Hasil analisis menunjukkan bahwa setiap kenaikan temperatur
menyebabkan perubahan fasa, yang awalnya terbentuk
kloraluminit (AlCl3.H2O) kemudian terdekomposisi sehingga
membentuk fasa amorf, lalu fasa-fasa intermediat alumina,
sampai pada temperatur 1100 ̊C terbentuk fasa α-Al2O3
(korundum). Penambahan PEG berpengaruh terhadap ukuran
kristal yang terbentuk, yakni semakin besar gugus PEG yang
digunakan semakin kecil ukuran kristal yang didapatkan. Pada
temperatur 1100 ̊C didapatkan ukuran kristal tanpa penambahan
PEG sebesar 235 nm, penambahan PEG 400 berukuran 217 nm
dan PEG 1000 berukuran 139 nm.
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The metal-dissolved method has been implemented on the
synthesis of Al2O3 with temperature variations and the addition
of polyethylene glycol (PEG).The basic materials used in this
study were aluminum powder (Al Merck), HCl (Merck 37%) and
PEG as a template (PEG 400 and 1000). Al2O3 synthesis was
performed using metal-dissolved acid methods for about one-hour
calcinations on temperature variation of 100 ̊C, 300 ̊C, 900 ̊C,
1000 ̊C, 1050 ̊C and 1100 ̊C. The phase characterization was
performed using X-ray diffractometer (XRD), where the data
were then analysed phase identification, composition calculation
and crystallites size estimation. The analyses showed that there
were phase changes with calcination temperature, which was
originally formed chloraluminite (AlCl3.H2O) after drying then
into amorphous phase and Al2O3 intermediate phases below
1100°C and then stable corundum (α-Al2O3) at 1100°C. The
addition of PEG affected the crystal size, eg. after 1100°C
calcination, the crystallite size of corundum was 235 nm for
sample without PEG, but then decreases to 217 nm for the
PEG400 added sample and then to 139 nm for the PEG1000
added sample.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Additional Information: | RSFi 620.112 2 War s |
| Uncontrolled Keywords: | Metode logam terlarut; fasa-fasa intermediat; a-Al2-O3 PEG; XED; PEG; ukuran kristal |
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) > TA491 Metal coating. |
| Divisions: | Faculty of Mathematics and Science > Physics > 45201-(S1) Undergraduate Thesis |
| Depositing User: | - Taufiq Rahmanu |
| Date Deposited: | 04 Jul 2019 03:21 |
| Last Modified: | 04 Jul 2019 03:21 |
| URI: | http://repository.its.ac.id/id/eprint/63469 |
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