The Malaysian Journal of Analytical Sciences Vol 17
No 1 (2013): 91 – 100
SYNTHESIS OF
ALKYLPOLYGLUCOSIDE FROM DEXTROSE-DECANOL IN THE PRESENCE OF SILICOTUNGSTIC ACID
SOL-GEL CATALYST
(Sintesis Alkilpoliglukosida Daripada
Dekstrosa-Dekanol Dengan Kehadiran Katalis Asid Silikotungstik Sol-Gel)
Izazi
Azzahidah Amin1*, Mohd Ambar Yarmo1, Nik Idris Nik Yusoff
2, Nor Asikin Mohamad Nordin1,3,
Wan Nor Roslam
Wan Isahak1
1 School of Chemical Sciences and Food
Technology, Faculty of Science and Technology,
Universiti
Kebangsaan Malaysia, 43600 Bangi, Selangor Malaysia.
2 Department of Pharmaceutical Chemistry,
Kuliyyah of Pharmacy,
International
Islamic University of Malaysia, 25200 Kuantan, Pahang Malaysia.
3Department of Science, UTM Space,
Universiti
Teknologi Malaysia International Campus Jalan Semarak, 54100 Kuala Lumpur
*Corresponding author: azzahidah_87@yahoo.com.my
Abstract
The purpose of
this study is to synthesis alkylpolyglucoside via condensation of decanol with
dextrose in the presence of heterogenous catalyst. In this study,
silicotungstic acid sol-gel (STSG) prepared using sol-gel was used as solid
acid catalyst. The catalyst was characterized using BET surface area
measurement, X-ray Diffraction (XRD) and X-ray Photoelectron Spectroscopy (XPS)
surface analysis. The final product was easy to be separated from catalyst
without the need of a further neutralization. Silicotungstic acid sol-gel has
been found efficient to be solid catalyst for synthesis
alkylpolyglucosides. Condensation
reaction was carried out 8 hours at 110oC-120oC under
vacuum condition at 10mmHg. The determination of decylglucoside has been achived by LC/ESI-MS/MS (ToF) giving
a mass peak at m/z = 343.2 correspond to the
m/z of [M +Na] +. Alkylpolyglucoside produced was analysed by
FTIR, 1H and 13C NMR spectrometric technique.
Keywords: silicotungstic acid sol-gel, alkylpolyglucosides, XPS, LC/ESI-MS/MS
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