Optimasi Ukuran Kristal Katalis Ni-Co/ZSM-5 Menggunakan Desain Eksperimen Taguchi

Amdartum, Anisa Trike (2026) Optimasi Ukuran Kristal Katalis Ni-Co/ZSM-5 Menggunakan Desain Eksperimen Taguchi. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Katalis Ni-Co/ZSM-5 merupakan katalis bifungsional yang memiliki potensi untuk berbagai aplikasi katalitik karena menggabungkan situs aktif logam dan karakteristik zeolit. Ukuran kristal merupakan salah satu parameter penting yang mempengaruhi karakteristik dan kinerja katalis karena berkaitan dengan luas permukaan, dispersi logam dan jumlah situs aktif. Penelitian ini bertujuan untuk mengoptimalisasi ukuran kristal katalis Ni-Co/ZSM-5 menggunakan Desain Eksperimen Taguchi. Katalis disintesis melalui metode impregnasi basah dan dikarakterisasi dengan X-Ray Diffraction (XRD). Faktor yang dipelajari dalam penelitian ini adalah Ni-Co loading (2; 4; dan 8 wt%), waktu impregnasi (3; 6; dan 12 jam), dan agen pereduksi (hidrazin hidrat, natrium borohidrida, dan asam askorbat). Hasil karakterisasi menunjukkan bahwa seluruh sampel mempertahankan struktur kristalin khas ZSM-5 setelah proses impregnasi dan reduksi. Ukuran kristal yang diperoleh berada pada rentang 30,73–37,37 nm. Analisis Taguchi menunjukkan bahwa kondisi sintesis optimum diperoleh pada loading logam 8 wt%, waktu impregnasi 12 jam, dan penggunaan agen pereduksi hidrazin hidrat. Pengaruh masing-masing faktor ditunjukkan dengan nilai persentase kontribusi yaitu 57,6% untuk waktu impregnasi, 20,0% untuk loading nikel kobalt, dan 22,4% untuk agen pereduksi.
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Ni-Co/ZSM-5 is a bifunctional catalyst with potential for various catalytic applications due to the combination of active metal sites and the unique characteristics of zeolite. Crystallite size is one of the important parameters affecting catalyst properties and performance because it is closely related to surface area, metal dispersion, and the number of active sites. This study aimed to optimize the crystal size of Ni-Co/ZSM-5 catalysts using the Taguchi Design of Experiments approach. The catalysts were synthesized by the wet impregnation method and characterized using X-Ray Diffraction (XRD). The factors investigated in this study were Ni-Co loading (2; 4; and 8 wt%), impregnation time (3; 6; and 12 h), and reducing agents (hydrazine hydrate, sodium borohydride, and ascorbic acid). The characterization results showed that all samples retained the characteristic crystalline structure of ZSM-5 after the impregnation and reduction processes. The obtained crystal sizes ranged from 30.73 to 37.37 nm. Taguchi analysis indicated that the optimum synthesis conditions were achieved at a metal loading of 8 wt%, an impregnation time of 12 h, and the use of hydrazine hydrate as the reducing agent. The contribution of each factor was represented by percentage contributions of 57.6% for impregnation time, 20.0% for Ni-Co loading, and 22.4% for the reducing agent.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Ni-Co/ZSM-5, impregnasi, ukuran kristal, XRD, Desain Eksperimen Taguchi,NiCo/ZSM-5, impregnation, crystallite size, XRD, Taguchi Design of Experiment.
Subjects:	Q Science > QD Chemistry > QD501 Catalysis. Catalysts.
Divisions:	Faculty of Science and Data Analytics (SCIENTICS) > Chemistry > 47201-(S1) Undergraduate Thesis
Depositing User:	Anisa Trike Amdartum
Date Deposited:	03 Aug 2026 03:49
Last Modified:	03 Aug 2026 03:49
URI:	http://repository.its.ac.id/id/eprint/142088

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