Sintesis dan Karakterisasi Katalis Magnesium Seng Fluorida (MZF) serta Aplikasinya pada Reduksi p-Nitrofenol menjadi p-Aminofenol

Mulyanto, Mintang (2025) Sintesis dan Karakterisasi Katalis Magnesium Seng Fluorida (MZF) serta Aplikasinya pada Reduksi p-Nitrofenol menjadi p-Aminofenol. Masters thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Katalis Magnesium Seng Fluorida (MZF) dengan variasi mol Zn sebesar 0; 0,025; 0,050; 0,075; 0,100; dan 0,150 telah berhasil disintesis dengan metode sol gel. Padatan hasil sintesis dikarakterisasi dengan Difraksi Sinar-X (XRD), spektrofotometer Fourier Transform Infrared (FTIR), adsorpsi piridin-FTIR, adsorpsi desorpsi nitrogen (N2), dan Field Emission Scanning Electron Microscopy-Energy Dispersive X-ray (FESEM-EDX). Hasil karakterisasi XRD menunjukkan bahwa katalis memiliki struktur kristal tetragonal. Spektra FTIR menunjukkan adanya ikatan Mg–F, sedangkan adsorpsi piridin-FTIR menunjukkan adanya situs asam Brønsted dan Lewis. Adsorpsi-desorpsi N2 menunjukkan loop histeresis tipe-H1 yang menunjukkan mesopori dan luas permukaan katalis antara 13,940-33,117 m2/g. Citra FESEM menunjukkan morfologi terbuka dan padat pada katalis MZF dengan doping 0,100 mol Zn (MZ4F). Hasil uji katalitik menunjukkan bahwa presentase tertinggi untuk konversi p-nitrofenol (PNP), yield, dan selektivitas p-aminofenol (PAP) tercapai pada katalis MZ4F, dengan konversi PNP sebesar 99,50%, sedangkan yield dan seletivitas PAP sebagai produk target masing masing 69,01 dan 69,46%. Kinerja katalis meningkat apabila ukuran kristal kecil, struktur pori terbuka dan terdistribusi merata, serta rasio situs asam Brønsted dan Lewis yang seimbang (B/L ≈ 1).
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Magnesium Zinc Fluoride (MZF) catalyst with Zn mole variations of 0; 0,025; 0,050; 0,075; 0,100; and 0,150 has been successfully synthesized by the sol gel method. The synthesized solids were characterized by X-ray Diffraction (XRD), Fourier Transform Infrared (FTIR) spectrophotometer, pyridine adsorption-FTIR, nitrogen (N2) adsorption-desorption, and Field Emission Scanning Electron Microscopy-Energy Dispersive X-Ray (FESEM-EDX). The XRD characterization results showed that the catalyst had a tetragonal crystal structure. The FTIR spectra showed the presence of Mg–F bonds, while the pyridine adsorption FTIR showed the presence of Brønsted and Lewis acid sites. The N2 adsorption-desorption showed an H1-type hysteresis loop indicating mesopores and a catalyst surface area between 13,940 and 33,117 m2/g. FESEM images showed an open and dense morphology in MZF catalyst with 0,100 mol Zn doped (MZ4F). The catalytic test results showed that the highest percentage of p-nitrophenol (PNP) conversion, yield, and p-aminophenol (PAP) selectivity was achieved on the MZ4F, with a PNP conversion of 99,50%, while the yield and selectivity of PAP as the target product were 69,01 and 69,46%, respectively. Catalyst performance improved with a small crystallite size, an open and evenly distributed pore structure, and a balanced ratio of Brønsted and Lewis acid sites (B/L ≈ 1).

Item Type:	Thesis (Masters)
Uncontrolled Keywords:	katalis, magnesium fluorida, doping Zn, reduksi p-nitrofenol, catalyst, magnesium fluoride, Zn doping, p-nitrophenol reduction
Subjects:	Q Science Q Science > QD Chemistry Q Science > QD Chemistry > QD1 Oxidation-reduction reaction. Q Science > QD Chemistry > QD501 Catalysis. Catalysts.
Divisions:	Faculty of Natural Science > Chemistry > 47101-(S2) Master Thesis
Depositing User:	Mintang Mulyanto
Date Deposited:	05 Aug 2025 07:56
Last Modified:	05 Aug 2025 07:56
URI:	http://repository.its.ac.id/id/eprint/127019

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