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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