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ITS » Master Theses » Kimia - S2
Posted by dee@its.ac.id at 11/01/2012 16:10:19 • 149 Views
REAKSI AMOKSIMASI SIKLOHEKSANON MENGGUNAKAN KATALIS AG/TS-1
AMMOXIMATION OF CYCLOHEXANONE OVER Ag/TS-1 CATALYST
Created by :
FITASARI, DYAH ( 1409201719 )
| Subject: | Katalisis | | Alt. Subject : | Catalysts | | Keyword: | Amoksimasi sikloheksanon
Sikloheksanon oksim
Ag/TS-1 |
[ Description ]
TS-1 telah berhasil dimodifikasi dengan menggabungkan Ag dengan variasi loading 0,5%, 1%, 2% dan 4%. Impregnasi dilakukan pada TS-1 sebelum kalsinasi dan sesudah kalsinasi. Impregnasi sebelum dan setelah kalsinasi bertujuan untuk mendispersikan Ag (1) hanya pada permukaan partikel/kristalit TS-1 dan (2) pada seluruh permukaan TS-1. Katalis hasil sintesis kemudian dikarakterisasi dengan teknik Difraksi sinar-X, spektroskopi inframerah dan adsorpsi piridin. Pola XRD menunjukkan bahwa semua katalis tersebut memiliki kristalinitas tinggi dengan struktur MFI, dan tidak ada fase kristalin yang lain. Spektra inframerah menunjukkan bahwa titanium tetrahedral pada TS-1 tetap ada setelah impregnasi Ag. Teknik adsorpsi piridin menunjukkan adanya sisi Lewis pada Ag/TS-1. Selanjutnya, katalis diuji aktivitasnya pada reaksi amoksimasi sikloheksanon dengan H2O2 sebagai oksidan menggunakan pelarut metanol. Hadirnya Ag pada katalis meningkatkan pembentukan sikloheksanon oksim. Optimasi katalis digunakan untuk uji variasi waktu, suhu dan pelarut.
Alt. Description
TS-1 has been successfully modified by impregnation of Ag with loading’s variation 0,5%, 1%, 2% and 4%. Impregnation was carried out before and after calcination. The impregnation before and after calcination aimed to disperse Ag (1) at only particle/cristallite surface TS-1 and (2) on all surface TS-1. The catalysts then characterized using XRD, FTIR, and pyridine adsorption. XRD patterns revealed that all catalysts have high crystallinity with MFI structure and no other crystalline phase was observed. The infrared spectra showed that the tetrahedral titanium in TS-1 is still remained after impregnation with Ag. Pyridine adsorption technique showed that Lewis acid site are present in Ag/TS-1. Catalytic activities of the samples were studied in ammoximation of cyclohexanone with aqueous H2O2 in methanol solvent. It was found that the presence of Ag spesies in the catalysts enhanced the rate of formation of cyclohexanone oxime. The catalyst was optimized in various time, temperature and solvent.
| Contributor | : |
- Dr. Didik Prasetyoko, M.Sc
- Suprapto, M.Si, Ph.D
| | Date Create | : | 26/10/2011 | | Type | : | Text | | Format | : | pdf | | Language | : | Indonesian | | Identifier | : | ITS-Master-3100011045230 | | Collection ID | : | 3100011045230 | | Call Number | : | RTKi 541.395 Fit r |
Source :
Master Thesis of Chemistry, RTKi 541.395 Fit r, 2011
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ITS Community
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Copyright @2011 by ITS Library. This publication is protected by copyright and per obtained from the ITS Library prior to any prohibited reproduction, storage in a re transmission in any form or by any means, electronic, mechanical, photocopying, reco For information regarding permission(s), write to ITS Library
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