Sintesis & Karakterisasi ZSM-5 Mesopori Serta Uji Aktivitas Katalitik pada Reaksi Esterifikasi Asam Lemak Sawit Menjadi Metil Ester

Purnamasari, Ika (2011) Sintesis & Karakterisasi ZSM-5 Mesopori Serta Uji Aktivitas Katalitik pada Reaksi Esterifikasi Asam Lemak Sawit Menjadi Metil Ester. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

ZSM-5 mesopori telah berhasil disiapkan menggunakan prekursor zeolit nanoklaster dengan variasi waktu hidrotermal 12, 24, dan 48 jam. Templat pertama yaitu kation TPA digunakan sebagai agen pengarah struktur ZSM-5 dan templat kedua surfaktan CTABr digunakan sebagai pengarah struktur meso. Padatan dikarakterisasi dengan metode difraksi sinar-X, spektroskopi inframerah, adsorpsi N2 dan adsorpsi piridin. Hasil karakterisasi menunjukkan karakteristik kekristalan ZSM-5 yang meningkat dan fase mesopori yang menurun sejalan dengan lama waktu hidrotermal. Keasaman dan luas permukaan ZSM-5 mesopori berkurang dengan semakin lama waktu hidrotermal. Hasil pengujian aktivitas katalis pada reaksi esterifikasi asam lemak stearin kelapa sawit, menunjukkan bahwa katalis yang disintesis dengan waktu hidrotermal 24 jam menghasilkan konversi paling tinggi yaitu sebesar 88,83 % dalam waktu 30 menit. Hal ini disebabkan katalis tersebut memiliki fase mesopori dan kristal ZSM-5 yang berimbang serta sifat asam dan luas permukaan yang baik.
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Mesoporous ZSM-5 have been successfully prepared using zeolite nanocluster precursor with various hydrothermal time 12, 24, and 48 hours. First template kation TPA were used as ZSM-5 structure directing agent and second template surfactant CTABr were used as meso structure directing agent. Catalysts were characterizatied using X-ray difraction, infrared spectroscopy, N2 adsorption, and pyridine adsorption. Results of characterization showed that crystallinity of ZSM-5 have increased and mesoporous phase have decreased as long as increasing hydrothermal time. Acidity and surface area of ZSM-5 have decreased as long as hydrothermal time. The conversion of FFA in catalytic activity test on esterification palm stearin fatty acid showed that catalyst with hydrothermal time 24 hours was the best catalyst for this reaction with result of conversion was 88,83 % in 30 minute. This catalyst could resulted the highest conversion because it has mesoporous phase that almost same account with crystallinity of ZSM-5 and enough good of acidity and surface area.

Item Type:	Thesis (Other)
Additional Information:	RSKi 541.39 Pur s
Uncontrolled Keywords:	ZSM-5 Mesopori, Waktu hidrotermal, Kristalinitas, Keasaman, Reaksi esterifikasi, Mesoporous ZSM-5, hydrothermal time, crystallinity, acidity, esterification
Subjects:	Q Science > QD Chemistry > QD481 Chemical structure.
Divisions:	Faculty of Mathematics and Science > Chemistry > 47201-(S1) Undergraduate Thesis
Depositing User:	magang .
Date Deposited:	15 Oct 2026 03:49
Last Modified:	15 Oct 2026 03:49
URI:	http://repository.its.ac.id/id/eprint/145605

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