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All Journal POSITRON Jurnal Sains dan Teknologi Kimia
Endah Sayekti
Department of Chemistry, Tanjungpura, University, Jl. A. Yani Pontianak 78124
Chemical Engineering, Chemistry & Bioengineering Energy Engineering Physics

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MEKANISME KLORINASI EUGENOL MENGGUNAKAN KLORIN (CL2) DENGAN KATALIS FECL3 DALAM PELARUT DIKLOROMETANA Sayekti, Endah; Silalahi, Imelda H; Awalliah, Emy
Jurnal Sains dan Teknologi Kimia Vol 4, No 1 (2013): Jurnal Sains dan Teknologi Kimia
Publisher : Program Studi Kimia Jurusan Pendidikan Kimia FPMIPA UPI

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Abstract

 Chlorination of eugenol by chlorine with catalyst of FeCl3 in dichloromethane solvent had been performed. Chlorination was carried out at 2oC for 5 hours. The reaction produced dark brown clot which was soluble in methanol, acetone, ethyl acetate, dichloromethane and chloroform but insoluble in aquadest. An infrared analysis gave the chlorobenzene groups at 1095.57-1072.42 cm-1. The NMR1H showed the CHCl and CH2Cl groups at 3.2884-3.0185 ppm and NMR13C showed carbon as C-Cl at 100-20 ppm. GC-MS spectrum analysis showed there are four dominant products with the time retention at 28.650; 29.300; 32.383 and 37.242. Result of the spectroscopy analysis showed that the main coumpound of eugenol chlorination were 4-(2,3-dichloroprophyl)-2-methoxyphenol (24,67%); 4-(2-chloroprophyl)-6-chloro-2-methoxyphenol(20,57%); 4-(2,3-dichloroprophyl)-6-chloro-2-methoxyphenol (13,65%) and 3,6-dichloro-4-(2,3-dichloropropyl)-2-methoxyphenol or 5,6-dichloro-4-(2,3-dichloropropyl)-2-methoxyphenol  (9,92 %). Therefore, based on all analysis which were done, it can conclude that   chlorination of eugenol using chlorine catalyzed by FeCl3 in dichloromethane cause addition and aromatic electrofilic substitution. Key Word: Eugenol, Chlorination, FeCl3, Dichloromethane
Synthesis of NaP Zeolite Based on Bauxite Red Mud Using Hydrothermal Method on Mole Ratio of SiO2/Al2O3 Variations Eviva, Nur; Shofiyani, Anis; Sayekti, Endah
POSITRON Vol 13, No 1 (2023): Vol. 13 No. 1 Edition
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam, Univetsitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/positron.v13i1.60099

Abstract

Red mud is a bauxite industrial waste of reddish-brown mud with high alkalinity. Red mud has relatively high silica and alumina content, so it can be utilized as a raw material in the synthesis of zeolite. This study aims to synthesize high-purity NaP zeolite from red mud at various SiO2/Al2O3 mole ratios. The synthesis begins with neutralizing the red mud, followed by decomposition using the alkaline fusion method at a ratio of red mud:NaOH = 1:1 (w/w). The filtrate produced by the alkaline fusion was adjusted to the mole ratio of SiO2/Al2O3 = 2.0; 2.5; 3.0; and 4.0, respectively, by adding sodium silicate, followed by a hydrothermal process using an autoclave at 120oC for 16 hours. The synthesized zeolites were characterized using XRD and FTIR spectrophotometry. The XRD results showed that the zeolite produced in all variations of the SiO2/Al2O3 mole ratio studied was a type of high-purity NaP with no other zeolite crystalline phases found as impurities. The structure formed is tetragonal with a degree of crystallinity of 74.54%; 76.47%; 78.94%; 75.64%, and crystal size 80.2286; 54.3437; 37.7099 and 40.1226 nm for zeolite with SiO2/Al2O3 mole ratio 2.0; 2.5; 3.0; and 4.0, respectively. Based on the results of the study, pure NaP zeolite can be synthesized from red mud material using the hydrothermal method at the ratio of moles SiO2/Al2O3 = 2.0 – 4.0.
Co-Authors Anis Shofiyani Emy Awalliah Eviva, Nur Imelda Hotmarisi Silalahi