Optimasi Waktu Reaksi dan Metode Aktivasi p-Nitrofenol pada Reduksi p-Nitrofenol menjadi p-Aminofenol dengan Katalis Magnesium Fluorida Terdoping Zn

Maharani, Meyra Viasanty (2026) Optimasi Waktu Reaksi dan Metode Aktivasi p-Nitrofenol pada Reduksi p-Nitrofenol menjadi p-Aminofenol dengan Katalis Magnesium Fluorida Terdoping Zn. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Pada penelitian ini telah berhasil disintesis katalis magnesium fluorida terdoping Zn 0,1 mol (MZF) yang berupa bubuk berwarna putih tulang melalui metode sol-gel. Katalis MZF dikarakterisasi dengan difraksi sinar-X (XRD), spektrofotometer FTIR, adsorpsi-desorpsi N2, dan adsorpsi piridin-FTIR. Test aktivitas katalitik MZF pada reduksi p-nitrofenol (PNP) dengan agen pereduksi NaBH4 menjadi p-aminofenol (PAP) pada variasi waktu reaksi dan aktivasi PAP yaitu MA1, MA2 dan MA3. Pola difraksi MZF menunjukkan terbentuknya fasa kristal tetragonal yang sama dengan MgF2, namun terjadi pergeseran sudut 2θ puncak difraksi pada MZF yang merupakan indikasi keberhasilan doping Zn pada struktur MgF2. Spektra FTIR MZF sama dengan MgF2. Situs asam Lewis dan Brønsted pada permukaan katalis meningkat akibat doping Zn. Katalis MZF memiliki karakteristik mesopori dengan luas permukaan sebesar 23,933 m2/g dan diameter pori 12-17 nm. Kondisi optimum (yield PAP tertinggi) diperoleh dengan lama reaksi 60 menit pada metode aktivasi PAP 2 (MA2) dengan konversi PNP sebesar 87,43% dan yield PAP sebesar 59,50%. Peningkatan konversi PNP sebesar 1,02 kali dan yield PAP sebesar 92,49 kali dibandingkan dengan hasil katalisis dengan MgF2. Katalis MZF mampu memfasilitasi reduksi PNP menjadi PAP secara efektif melalui peningkatan keasaman permukaan dan luas permukaan katalis.
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In this study, 0,1 mol Zn-doped magnesium fluoride catalyst (MZF) in the form of ivory white powder has been successfully synthesized through the sol-gel method. The MZF catalyst was characterized by X-ray diffraction (XRD), FTIR spectrophotometer, N2 adsorption-desorption, and pyridine adsorption-FTIR. The catalytic activity test of MZF on the reduction of p-nitrophenol (PNP) with the reducing agent NaBH4 to p-aminophenol (PAP) at various reaction times and PAP activations, namely MA1, MA2 and MA3. The MZF diffraction pattern shows the formation of the same tetragonal crystal phase as MgF2, but there is a 2θ angular shift of the diffraction peak in MZF which is an indication of the success of Zn doping in the MgF2 structure. The FTIR spectra of MZF are the same as MgF2. Lewis and Brønsted acid sites on the catalyst surface increase due to Zn doping. The MZF catalyst has mesoporous characteristics with a surface area of 23,933 m2/g and a pore diameter of 12-17 nm. The optimum condition (highest PAP yield) was obtained with a reaction time of 60 minutes in the activation of PAP 2 (MA2) method with a PNP conversion of 87,43% and a PAP yield of 59,50%. The increase in PNP conversion was 1,02 times and the PAP yield was 92,49 times compared to the results of catalysis with MgF2. The MZF catalyst was able to facilitate the reduction of PNP to PAP effectively by increasing the surface acidity and surface area of the catalyst.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Magnesium Seng Fluorida, p-Nitofenol, p-Aminofenol, MgF2, Doping Zn, Magnesium Zinc Fluoride, p-Nitrophenol, p-Aminophenol, MgF2, Zn Doping
Subjects:	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:	Meyra Viasanty Maharani
Date Deposited:	21 Jul 2026 03:49
Last Modified:	21 Jul 2026 04:12
URI:	http://repository.its.ac.id/id/eprint/135753

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