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DEOKSIGENASI ASAM OLEAT MENJADI BIOAVTUR MENGGUNAKAN KATALIS BENTONIT BERPILAR ALUMINIUM (Al-PILC) DENGAN IMPREGNASI LOGAM Ni DAN Co

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Penilaian

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The depletion of fossil fuel resources and the increasing environmental crisis caused by greenhouse gas emissions have driven the search for renewable and environmentally friendly alternative fuels. The aviation sector still relies on fossil fuels and produces high greenhouse gas emissions, so it is necessary to develop aviation fuels from renewable sources. Bioavtur is one alternative that can reduce greenhouse gas emissions and dependence on fossil energy. Oleic acid, an unsaturated fatty acid found in vegetable oils, can be converted into bioavtur through a deoxygenation process using aluminum-pillared bentonite catalysts impregnated with nickel and cobalt metals. The purpose of this study is to determine the characteristics and compare the catalytic activities of Ni/Al-PILC and Co/Al PILC in the deoxygenation of oleic acid in terms of conversion, yield, and bioavtur selectivity. The bentonite catalyst was synthesized through pillarization with aluminum followed by impregnation with nickel and cobalt metals, then characterized using FTIR, XRD, XRF, TPD-NH3, and SAA. The catalyst was reduced first, before activity testing with oleic acid at 350 °C for 5 hours under 20 bar N₂ pressure, and the reaction products were analyzed using GC-FID. The characterization results showed that the pillarization of bentonite was successful, indicated by an increase in surface area, alumina percentage, and acidity, a decrease in intensity, the emergence of new absorption bands, and changes in diffraction peaks. Impregnation was also successful with a decrease in surface area, intensity, absorption band shifts, the emergence of nickel and cobalt oxide peaks, and the detection of the percentage of both metals. Activity tests showed high conversion, but yield and selectivity were still low. The synthesized Ni/Al-PILC and Co/Al-PILC catalysts still showed that the bentonite structure was maintained. Ni/Al-PILC has a surface area of 19,9095 m²/g and an acidity of 1,3188 mmol/g, while Co/Al-PILC is 119,4563 m²/g and 1,5868 mmol/g. The Ni/Al-PILC catalyst achieved slightly higher oleic acid conversion, yield, and bioavtur fuel selectivity, which were 99,25%, 8,51%, and 32,42%, compared to the Co/Al-PILC catalyst with 98,90%, 8,24%, and 31,52%. This is because the Ni/Al-PILC catalyst has higher surface acid concentration and larger pore diameter. Keywords: Bioavtur, Oleic Acid, Deoxygenation, Bentonite, Ni/Al-PILC and Co/Al-PILC

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Availability

Inventory Code	Barcode	Call Number	Location	Status
2507006429	T186004	T1860042025	Central Library (Reference)	Available but not for loan - Not for Loan

Detail Information

Series Title

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Call Number

T1860042025

Publisher

Indralaya : Prodi Ilmu Kimia, Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Sriwijaya., 2025

Collation

xviii, 125 hlm.; ilus.; tab.; 29 cm.

Language

Indonesia

ISBN/ISSN

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Classification

540.07

Content Type

Text

Media Type

unmediated

Carrier Type

other (computer)

Edition

-

Subject(s)

Prodi Ilmu Kimia
Deoksigenasi Asam Oleat

Specific Detail Info

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Statement of Responsibility

MI

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