Sintesis dan Karakterisasi Katalis Magnesium Fluorida Terdoping Sn serta Optimasi Massa Katalis untuk Reduksi p-Nitrofenol menjadi p-Aminofenol

Firdaus, Aulia Nur (2026) Sintesis dan Karakterisasi Katalis Magnesium Fluorida Terdoping Sn serta Optimasi Massa Katalis untuk Reduksi p-Nitrofenol menjadi p-Aminofenol. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Katalis Magnesium Timah Fluorida (MSF) telah berhasil disintesis melalui metode sol-gel. Padatan yang disintesis dikarakterisasi dengan Difraksi Sinar-X (XRD), Spektroskopi
Inframerah Transformasi Fourier (FTIR), adsorpsi piridin FTIR, dan adsorpsi-desorpsi nitrogen. Hasil karakterisasi XRD menunjukkan bahwa struktur kristal katalis MSF sama dengan MgF2 dalam bentuk tetragonal tanpa adanya fase SnO2. Sudut 2θ puncak MSF bergeser dari puncak MgF2 yang merupakan indikasi doping Sn ke dalam kristal MgF2. Situs asam Lewis dan Brønsted meningkat karena doping Sn ke dalam MgF2, yang dikonfirmasi oleh hasil adsorpsi piridin-FTIR. Asam Lewis dan Brønsted MSF masing-masing adalah 0,245 dan 0,312, sedangkan MgF2 masing-masing adalah 0,040 dan 0,158. Keberhasilan sintesis MSF juga didukung oleh hasil karakterisasi FTIR yang menunjukkan tidak adanya gugus -OCH3 dan adanya vibrasi ikatan Mg-F dengan Kurva karakterisasi adsorpsi-desorpsi nitrogen menunjukkan bahwa padatan katalis termasuk dalam isoterm tipe IV dengan loop histeresis tipe H1. Doping logam Sn ke dalam MgF2 dapat meningkatkan luas permukaan spesifik padatan katalis dari 10,391 m2/g menjadi 36,069 m2/g dan volume pori dari 0,098 cm3/g menjadi 0,225 cm3/g. Padatan yang disintesis diaplikasikan sebagai katalis dalam reaksi reduksi p-nitrofenol menjadi p-aminofenol dengan variasi massa katalis 10, 15, 20, 25, dan 30 mg dan tiga metode aktivasi PNP yang berbeda. Massa katalis 20 mg dan metode aktivasi PNP dengan katalis dan NaBH4 secara simultan (M1) menunjukkan kinerja terbaik dengan hasil PAP tertinggi yang diamati, mencapai 48 kali lipat dari MgF2.
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Magnesium Tin Fluoride (MSF) catalyst has been successfully synthesized through the sol-gel method. The synthesized solid was characterized by X-ray Diffraction (XRD), Fourier Transform Infrared Spectroscopy (FTIR), pyridine adsorption FTIR, and nitrogen adsorption-desorption. The XRD characterization results showed that the MSF catalyst crystals structure was same to MgF2 in tetragonal shape without the presence of SnO2 phase. The 2θ angle of MSF peak shifted from MgF2 peak which is an indication of Sn doping into MgF2crystal. Lewis and Brønsted acid sites increased due to Sn doping into MgF2, which was confirmed by the pyridine adsorption-FTIR results. Lewis and Brønsted acids of MSF were 0,245 and 0,312 respectively, while MgF2 was 0,040 and 0,158 respectively. The success of MSF synthesis was also supported by the FTIR characterization results which showed the absence of -OCH3 groups and the presence of Mg-F bond vibrations with a shift in wave number towards
lower due to Sn doping. The nitrogen adsorption-desorption characterization curve shows that the catalyst solid belongs to the type IV isotherm with a type H1 hysteresis loop. Doping of Sn metal into MgF2 can increase the specific surface area of the catalyst solid from 10.391 m2/g to
36.069 m2/g and the pore volume from 0.098 cm3/g to 0.225 cm3/g. The synthesized solid was applied as a catalyst in the reduction reaction of p-nitrophenol to p-aminophenol with variations in catalyst mass of 10, 15, 20, 25, and 30 mg and three different PNP activation methods. The catalyst mass of 20 mg and the PNP activation method with catalyst and NaBH4 simultaneously (M1) showed the best performance with the highest PAP yield observed, reaching 48 times that
of MgF2.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Katalis, Magnesium Fluorida, p-Aminofenol, p-Nitrofenol, Timah
Subjects:	Q Science > QD Chemistry > QD1 Oxidation-reduction reaction. Q Science > QD Chemistry > QD501 Catalysis. Catalysts.
Divisions:	Faculty of Science and Data Analytics (SCIENTICS) > Chemistry > 47201-(S1) Undergraduate Thesis
Depositing User:	Aulia Nur Firdaus
Date Deposited:	22 Jul 2026 02:29
Last Modified:	22 Jul 2026 02:29
URI:	http://repository.its.ac.id/id/eprint/136155

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