Sintesis, Aktivitas, dan Selektivitas Katalis Mg₁₋ₓZnₓF₂ pada Reaksi Sintesis α-Tokoferol

Wahyuni, Ninik Sri (2011) Sintesis, Aktivitas, dan Selektivitas Katalis Mg₁₋ₓZnₓF₂ pada Reaksi Sintesis α-Tokoferol. Other thesis, Institut Teknologi Sepuluh Nopember.

Text 1407100073-Undergraduate_thesis.pdf Restricted to Repository staff only Download (45MB)

Abstract

Pada penelitian ini telah dipelajari sintesis dan aktivitas serta selektivitas katalis ZnO, MgF2 dan Mg₁₋ₓZnₓF₂ (x = 0,025; 0,050; 0,100 dan 0,150 mol) dalam reaksi sintesis a-tokoferol. Katalis dipreparasi kemudian dikarakterisasi dengan Difraksi sinar-X, FTIR-adsopsi piridin dan ditentukan luas permukaannya. Data XRD menunjukkan bahwa katalis MgF2 dan Mg₁₋ₓZnₓF₂ memiliki struktur yang sama yaitu tetragonal. Analisis FTIRpiridin menunjukkan semua katalis hasil sintesis memiliki sisi asam Lewis dan Bronsted sedangkan luas permukaan katalis turun dengan adanya doping Zn. Aktivitas katalis ditentukan berdasarkan besamya konversi reaktan trimetilhidrokuinon. Hasil penelitian menunjukkan bahwa aktivitas tertinggi dengan katalis MgF2 sebesar 98,47% dan selektivitas a-tokoferol tertinggi pada Mg₀,₉₅₀Zn₀,₀₅₀F₂ sebesar 84,98%.
======================================================================================================================================
In this research, synthesis, activity and selectivity of ZnO, MgF2 and Mg₁₋ₓZnₓF₂ catalyst (x = 0,025; 0,050; 0,100 and 0,150 mol) has been investigated. The prepared solid catalyst were characterized by X-ray diffraction, FTIR and surface area measurement. The XRD data presented MgF2 and Mg₁₋ₓZnₓF₂ have tetragonal structure. FTIR spectra of pyridine for all catalysts have Lewis and Bronsted acid sites and surface area of catalyst decreased with increased Zn doping. The catalytic activity were determined based on percentage of trimethylhydroquinone convertion. The result show that MgF2 has the highest activity 98,47% and Mg₀>₉₅₀Zn₀,₀₅₀F₂ has the highest selectivity of a-tokoferol 84,98%.

Item Type:	Thesis (Other)
Additional Information:	RSKi 541.395 Wah s
Uncontrolled Keywords:	a-tokoferol, doping, Mg1-XZnxF2, aktivitas, selektivitas, a-tokoferol, doping, Mg1-xZnxF2, activity, selectivity
Subjects:	Q Science > QD Chemistry > QD481 Chemical structure.
Divisions:	Faculty of Mathematics and Science > Chemistry > 47201-(S1) Undergraduate Thesis
Depositing User:	magang .
Date Deposited:	19 Oct 2026 02:06
Last Modified:	19 Oct 2026 02:06
URI:	http://repository.its.ac.id/id/eprint/145661

Actions (login required)

View Item