Faizah, Arista Nur (2026) Optimasi Massa Agen Pereduksi Natrium Borohidrida dan Metode Aktivasi p-Nitrofenol pada Reaksi Reduksi p-Nitrofenol Menjadi p-Aminofenol dengan Katalis Magnesium Fluorida Terdoping Sn. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Katalis Magnesium Fluorida terdoping Sn (MSF) berhasil disintesis melalui metode sol-gel dan dikarakterisasi dengan Difraksi Sinar-X (XRD), Spektroskopi Inframerah Transformasi Fourier (FTIR), adsorpsi piridin-FTIR, dan adsorpsi desorpsi N2. Aktivitas katalitik diuji dengan variasi massa agen pereduksi NaBH4 sebesar 5, 10, 15, 20, dan 25 mg melalui tiga metode aktivasi PNP yaitu katalis dan reduktor ditambahkan secara bersamaan (M1), katalis kemudian reduktor (M2), dan reduktor kemudian katalis (M3). Difraktogram MSF menunjukkan struktut kristal katalis berbentuk tetragonal dengan sudut 2θ puncak yang bergeser dibandingkan MgF2 yang menandakan keberhasilan doping Sn ke dalam struktur MgF2. Spektra FTIR menunjukkan adanya vibrasi ikatan Mg-F yang mengalami pergeseran bilangan gelombang ke arah yang lebih rendah. MSF mempunyai situs asam Lewis dan Bronsted yang lebih besar dibandingkan MgF2. Kurva isotermal MSF menunjukkan isoterm tipe IV dengan loop histerisis tipe H1 serta luas permukaan spesifik hingga 36,096 m2/g dengan volume pori sebesar 0,225 cm3/g. Uji katalitik menunjukkan bahwa kondisi optimum diperoleh pada massa NaBH4 15 mg melalui aktivasi M1 dengan konversi p-nitrofenol yang dihasilkan sebesar 82,85%, yield p-aminofenol sebesar 80,50% serta selektivitas p-nitrofenolat dan paminofenol masing-masing sebesar 1,36% dan 97,17%. Katalis MSF yang disintesis melalui metode sol-gel memiliki aktivitas dan selektivitas yang tinggi dalam mengarahkan reaksi reduksi p-nitrofenol menuju pembentukan p-aminofenol.
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The Sn-Doped Magnesium Fluoride Catalyst (MSF) catalyst was successfully synthesized via the sol-gel method and characterized using X-Ray Diffraction (XRD), Fourier Transform Infrared Spectroscopy (FTIR), pyridine-FTIR adsorption, and N2 adsorption desorption. Catalytic activity was tested by varying the mass of the reducing agent NaBH4 at 5, 10, 15, 20,and 25 mg through three PNP activation methods, namely catalyst and reductant added simultaneously (M1), catalyst then reductor (M2), and reductant then catalyst (M3). The MSF diffractogram shows a tetragonal crystal structure of the catalyst with a 2θ peak angle that is shifted compared to MgF2, which indicates the success of Sn doping into the MgF2 structure. The FTIR spectrum shows the vibration of the Mg-F bond which experiences a shift in the wave number towards a lower direction. MSF has larger Lewis and Bronsted acid sites than MgF2. The MSF isothermal curve shows a type IV isotherm with a type H1 hysteresis loop and a specific surface area of up to 36.096 m2/g with a pore volume of 0.225 cm3/g. Catalytic tests showed that optimum conditions were obtained at a mass of 15 mg NaBH4 through M1 activation with a p-nitrophenol conversion of 82.85%, a p-aminophenol yield of 80.50% and the selectivity of p-nitrophenolate and p-aminophenol being 1.36% and 97.17%, respectively.The MSF catalyst synthesized via the sol-gel method has high activity and selectivity in directing the p-nitrophenol reduction reaction towards the formation of p-aminophenol.
| Item Type: | Thesis (Other) |
|---|---|
| Uncontrolled Keywords: | Katalis, Magnesium Fluorida, p-Nitrofenol, p-Aminofenol,Timah Catalyst, Magnesium Fluoride, p-Nitrophenol, p-Aminophenol, Tin |
| Subjects: | Q Science Q Science > QD Chemistry Q Science > QD Chemistry > QD501 Catalysis. Catalysts. |
| Divisions: | Faculty of Science and Data Analytics (SCIENTICS) > Chemistry > 47201-(S1) Undergraduate Thesis |
| Depositing User: | Arista Nur Faizah |
| Date Deposited: | 22 Jul 2026 01:29 |
| Last Modified: | 22 Jul 2026 01:30 |
| URI: | http://repository.its.ac.id/id/eprint/136127 |
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