Pengaruh Waktu dan Suhu Hidrotermal pada Sintesis Silika Mesopori MCM-41 dari Lumpur Geotermal

Wibowo, Annisa Febriyanti Putri (2024) Pengaruh Waktu dan Suhu Hidrotermal pada Sintesis Silika Mesopori MCM-41 dari Lumpur Geotermal. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Pada penelitian ini dipelajari sintesis MCM-41 dengan bahan dasar lumpur geotermal dengan variasi waktu dan suhu hidrotermal. Hasil XRF menunjukkan bahwa kandungan silika dalam lumpur geotermal sebesar 85% dan meningkat sebesar 93,9% setelah pelindian dengan asam. Pengaruh waktu hidrotermal dipelajari terlebih dahulu terhadap sifat fisik dan kimianya, dilanjutkan dengan kajian terhadap pengaruh suhu. Analisis FT-IR menunjukkan bahwa sampel dengan suhu 100°C berhasil membentuk MCM-41 ditandai munculnya pita serapan Si–O–Si dan gugus silanol yang khas. Semakin lama waktu hidrotermal, semakin tinggi tingkat kristalinitas MCM-41. Waktu hidrotermal 48 jam menunjukkan kristalinitas tertinggi dibandingkan variasi waktu lainnya. Hasil FESEM menunjukkan permukaan partikel MCM-41 paling halus pada waktu hidrotermal 48 jam dengan luas permukaan sebesar 917,628 m2/g; volume pori sebesar 1,186 cc/g; dan ukuran diameter pori 5,170 nm. Peningkatan suhu hidrotermal pada waktu singkat menyebabkan proses kristalisasi lebih signifikan dan suhu hidrotermal 150°C mampu menghasilkan MCM-41 lebih halus dan lebih kristalinitas daripada suhu 100°C. Hasil penelitian ini memberikan informasi tentang parameter suhu lebih signifikan dibandingkan waktu hidrotermal dalam pembentukan MCM-41 dari lumpur geotermal.
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This research have been studied the synthesis of MCM-41 with geotermal sludge as the raw material with variations of hydrothermal time and temperature. XRF result showed that the silica in the geotermal sludge was 85% and increased up to 93,9% after acid leaching. The effect of hydrothermal time was initially studied on the physical and chemical properties, was followed by studied of the effect temperature. FT-IR analysis showed that samples at temperature of 100°C successfully formed MCM-41 have been assigned to the Si–O–Si absorption band and silanol groups. The longer hydrothermal time resulted the higher crystallinity of MCM-41. The hydrothermal time of 48 hours showed the highest crystallinity compared to the other time variations. FESEM result showed that the particle of MCM-41 have the smoothest surface at hydrothermal time of 48 hours with surface area of 917.628 m2/g; pore volume of 1.186 cc/g; and pore diameter of 5.170 nm. Increasing the hydrothermal temperature in a short time caused a more significant crystallization process and the hydrothermal temperature of 150°C was able to produce smoother and more crystallinity MCM-41 than the temperature of 100°C. This result of this study provide information about the temperature parameter are more significant than hydrothermal time in the crystallization of MCM-41 from geothermal sludge.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Hydrothermal, Geothermal Sludge, Mesoporous silica, Temperature, Time, Hidrotermal, Lumpur geotermal, Silika mesopori, Suhu, Waktu Hidrotermal, Lumpur geotermal, Silika mesopori, Suhu, Waktu
Subjects:	Q Science > QD Chemistry > QD471 Chemical compounds - Structure and formulas Q Science > QD Chemistry > QD481 Chemical structure. Q Science > QD Chemistry > QD905.2 Crystals. Q Science > QD Chemistry > QD96F56 Fluorescence spectroscopy
Divisions:	Faculty of Science and Data Analytics (SCIENTICS) > Chemistry > 47201-(S1) Undergraduate Thesis
Depositing User:	Annisa Febriyanti Putri Wibowo
Date Deposited:	23 Aug 2024 06:44
Last Modified:	23 Aug 2024 06:44
URI:	http://repository.its.ac.id/id/eprint/114066

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