Pengaruh Penambahan HCl Pada Sintesis Zeolit NaY dengan Template Lerak (Sapindus Rarak) Sebagai Katalis Deoksigenasi Limbah Minyak Goreng

Amaliah, Khofifah (2023) Pengaruh Penambahan HCl Pada Sintesis Zeolit NaY dengan Template Lerak (Sapindus Rarak) Sebagai Katalis Deoksigenasi Limbah Minyak Goreng. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Pada penelitian ini, dilakukan studi aktivitas katalitik zeolite NaY. Sintesis zeolite NaY dilakukan dengan sodium aluminat dan ludox sebagai sumber Si/Al serta digunakan metode hidrotermal pada suhu 100 °C selama 24 jam. Modifikasi sintesis dilakukan dengan penambahan ekstrak lerak dan HCl pada masing-masing sampel sebagai template dan agen pengarah mesopori. Zeolit NaY terbentuk pada sampel NaYL dan L- 0,2. Pada analisis adsorpsi-desorpsi N2, sampel menunjukkan tipe isoterm adsorpsi tipe I mikropori. Kemudian dilakukan reaksi pertukaran ion dan dilakukan analisis FTIR-Piridin yang menunjukkan keasaman Lewis bertambah dengan penambahan HCl. Luas permukaan dan jumlah situs asam mempengaruhi reaksi aktivitas katalitik sampel yang dilakukan dengan reaksi deoksigenasi pada minyak goreng bekas. Luas permukaan katalis yang tinggi menyebabkan peningkatan situs aktif dan difusi reagen. Peningkatan jumlah situs asam Lewis juga meningkatkan deoksigenasi katalitik minyak goreng bekas, yang menyiratkan disosiasi ikatan C–C terjadi di situs Lewis. Hasil reaksi deoksigenasi menunjukkan yield produk cair mengalami peningkatan dengan adanya penambahan HCl pada sampel L- 0,2 dengan persentase yield produk cair sebesar 34,44% dan konversi minyak sebesar 60,96%. Hasil analisis GC-MS diperoleh selektivitas hidrokarbon C11-18 tertinggi pada L- 0,2 sebesar 91,98%.
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In this research, the catalytic activity of zeolite NaY was examined. NaY zeolite synthesis was performed using sodium aluminate and Ludox as Si/Al sources and the hydrothermal method was applied at 100 °C for 24 hours. The synthesis was modified by adding Lerak extract and HCl as a template and mesoporous guide respectively. NaY zeolite was formed in NaYL and L-0.2 samples. In the N2 adsorption-desorption analysis, sample showed a Type I adsorption isotherm. An ion exchange reaction was performed and FTIR pyridine analysis showed that Lewis acidity increased with the addition of HCl. The surface area and the number of acid sites affect catalytic activity of samples processed through the deoxygenation reaction of used cooking oil. The large surface area of the catalyst led to an enlargement of the active sites and diffusion of the reagent. The increase in the number of Lewis acidic centers also increased the catalytic deoxygenation of used cooking oil, suggesting that the C-C bond dissociation occured at the Lewis centers. The results of deoxygenation reaction showed that liquid product yield increased by addition of HCl to sample L-0.2, with the liquid product yield percentage being 34.44% and the oil conversion being 60.96%. Results of the GC-MS analysis showed that L-0.2 had the highest selectivity for C11-18 hydrocarbons at 91.98%.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Deoksigenasi, Keasaman, Luas Permukaan, Zeolit NaY, Acidity; Deoxygenation, Surface Area, Zeolite NaY
Subjects:	Q Science Q Science > QD Chemistry Q Science > QD Chemistry > QD181.S6 A4 Aluminum silicates
Divisions:	Faculty of Science and Data Analytics (SCIENTICS) > Chemistry > 47201-(S1) Undergraduate Thesis
Depositing User:	Khofifah Amaliah
Date Deposited:	30 Aug 2023 03:39
Last Modified:	30 Aug 2023 03:39
URI:	http://repository.its.ac.id/id/eprint/102703

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