Katalis Bimetal Berbasis Ni pada Aluminosilikat Mesopori Bertemplat Nanoselulosa-P123 Untuk Produksi Biofuel Dari Minyak Jelantah

Fernanda, Ingelia Yuan (2026) Katalis Bimetal Berbasis Ni pada Aluminosilikat Mesopori Bertemplat Nanoselulosa-P123 Untuk Produksi Biofuel Dari Minyak Jelantah. Masters thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Pengembangan biofuel terbarukan memerlukan proses konversi katalitik yang efektif untuk mengubah lipid limbah menjadi produk yang kaya hidrokarbon. Namun, pembuatan katalis mesopori yang stabil secara struktural, ramah lingkungan, dan memiliki aktivitas katalitik tinggi masih merupakan tantangan utama. Pada penelitian ini, aluminosilikat mesopori (AM) disintesis melalui kombinasi metode sol-gel dan hidrotermal dengan nanoselulosa dan P123 sebagai templat pori. Keberadaan nanoselulosa dapat mengatur morfologi, meningkatkan kekakuan kerangka mesopori melalui interaksi dengan prekursor silikat dan aluminat, sehingga meningkatkan stabilitas struktur support aluminosilikat. Katalis NiO dan bimetal NiO Co3O4, NiFe2O4, serta NiO-MoO3 yang didukung pada AM diuji untuk konversi minyak jelantah berbasis kelapa pada suhu 360 °C. Adanya penambahan logam selain Ni pada aluminosilikat dapat meningkatkan keasaman Lewis dan memperkuat interaksi logam-support, meskipun terjadi penutupan sebagian pori setelah proses impregnasi. Analisis XPS mengonfirmasi keberadaan spesies Ni2+ dan Mo6+ pada permukaan katalis NiO MoO3/AM. NiO MoO3/AM menunjukkan kinerja katalitik terbaik dibandingkan katalis lainnya dengan konversi minyak sebesar 97%, yield cair 62,58%, dan yield hidrokarbon 48%, serta fraksi hidrokarbon C8-C16 sebesar 58,77%. Kinerja unggul NiO MoO3/AM dikaitkan dengan kombinasi komposisi bimetal Ni-Mo, kerangka aluminosilikat mesopori, keasaman Lewis dan Brønsted, serta interaksi logam-support, yang secara bersama-sama memfasilitasi deoksigenasi minyak jelantah berbasis kelapa menjadi biofuel.
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The development of renewable biofuels requires an effective catalytic conversion process to transform waste lipids into hydrocarbon-rich products. However, the preparation of mesoporous catalysts with structural stability, environmental compatibility, and high catalytic activity remains a major challenge. In this study, mesoporous aluminosilicate (AM) was synthesized by a combination of sol-gel and hydrothermal methods with nanocellulose and P123 as pore templates. Nanocellulose regulates the morphology and improves the rigidity of the mesoporous framework through its interaction with silicate and aluminate precursors, thereby enhancing the structural stability of the aluminosilicate support. NiO and bimetallic oxide catalysts, including NiO Co3O4, NiFe2O4, and NiO-MoO3 supported on AM, were evaluated for the conversion of used coconut oil at 360 °C. The presence of additional metals other than Ni on aluminosilicate increased Lewis acidity and strengthened metal–support interactions, although partial pore blockage occurred after the impregnation process. XPS analysis confirmed the presence of Ni2+ and Mo6+ species on the surface of the NiO MoO3/AM catalyst. NiO MoO3/AM showed the best catalytic performance compared with the other catalysts, with 97% oil conversion, 62.58% liquid yield, 48% hydrocarbon yield, and a C8-C16 hydrocarbon fraction of 58.77%. The superior performance of NiO MoO3/AM was attributed to the combination of the Ni-Mo bimetallic composition, mesoporous aluminosilicate framework, Lewis and Brønsted acidity, and metal-support interactions, which collectively facilitated the deoxygenation of used coconut oil into biofuel.

Item Type: Thesis (Masters)
Uncontrolled Keywords: Aluminosilikat mesopori, Nanoselulosa, Bimetal, Deoksigenasi, Minyak jelantah, Mesoporous Aluminosilicate, Nanocellulose, Bimetallic, Deoxygenation, Used Coconut Oil
Subjects: Q Science > QD Chemistry > QD501 Catalysis. Catalysts.
Divisions: Faculty of Science and Data Analytics (SCIENTICS) > Chemistry > 47101-(S2) Master Thesis
Depositing User: Ingelia Yuan Fernanda
Date Deposited: 05 Aug 2026 04:40
Last Modified: 05 Aug 2026 04:40
URI: http://repository.its.ac.id/id/eprint/143834

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