Alkatiri, Saleh (2019) Pengaruh Waktu Hidrotermal pada Sintesis Zeolit A dengan Prekursor Metakaolin dan Kaolin Fusi. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Zeolit A dari kaolin Bangka telah berhasil disintesis dengan metode hidrotermal melalui dua aktivasi prekursor berbeda yaitu konvensional dan alkali fusi. Proses sintesis dengan aktivasi prekursor konvensional dilakukan melalui kalsinasi kaolin pada 700 ˚C selama 2 jam untuk pembentukan metakaolin. Pada metode alkali fusi, aktivasi prekursor dilakukan pada 450 ˚C selama 4 jam. Zeolit A adalah produk utama yang diperoleh dengan menggunakan konsentrasi NaOH 3 M, suhu reaksi 100 ˚C dengan variasi waktu kristalisasi 5, 10, dan 20 jam dalam kedua metode. Keuntungan utama dari metode alkali fusi adalah dapat memungkinkan menggunakan kaolin mentah tanpa pemurnian sedangkan metode konvensional hanya menghasilkan zeolit A berkualitas baik ketika kaolin mentah dimurnikan. Pada kaolin, metakaolin, kaolin hasil fusi, dan produk sintesis dikarakterisasi dengan X-Ray Diffraction (XRD), Fourier Transform Infrared (FTIR), dan Scanning Electron Microscopy-Energy Dispersive X-Ray (SEM-EDX). Hasil karakterisasi XRD dan FTIR mengindikasikan bahwa zeolit A terbentuk melalui metode hidrotermal konvensional dan alkali fusi. Produk sintesis dari alkali fusi menunjukkan hasil yang lebih optimal dengan tingkat kemurnian yang lebih tinggi.
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Zeolite A from Bangka kaolin has been successfully synthesized by the hydrothermal method through the activation of two different precursors namely conventional and alkaline fusion. The synthesis process with the activation of conventional precursors is carried out through calcination of kaolin at 700 ˚C for 2 hours for the formation of metakaolin. In the alkali fusion method, the precursor activation was carried out at 450 ˚C for 4 hours. Zeolite A is the main product obtained by using 3 M NaOH concentration, reaction temperature of 100 ˚C with variations in crystallization time of 5, 10, and 20 hours in both methods. The main advantage of the alkali fusion method is that it is possible to use raw kaolin without purification while the conventional method only produces good quality zeolite A when raw kaolin is purified. In kaolin, metakaolin, kaolin from fusion, and synthesis products characterized by X-ray Diffraction (XRD), Fourier Transform Infrared (FTIR), and Scanning Electron Microscopy-Energy Dispersive X-Ray (SEM-EDX). The results of XRD and FTIR characterization indicated that zeolite A was formed in conventional hydrothermal and alkaline fusion methods. Synthesis products from alkali fusion show more optimal results with higher purity levels.
| Item Type: | Thesis (Other) |
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| Uncontrolled Keywords: | zeolit A, kaolin, metakaolin, alkali fusi, hidrotermal |
| Subjects: | Q Science Q Science > QD Chemistry |
| Divisions: | Faculty of Natural Science > Chemistry > 47201-(S1) Undergraduate Thesis |
| Depositing User: | Alkatiri Saleh |
| Date Deposited: | 20 Jul 2026 06:23 |
| Last Modified: | 20 Jul 2026 06:23 |
| URI: | http://repository.its.ac.id/id/eprint/67798 |
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