Synthesis of Zeolite from Sugarcane Bagasse Ash Using Cetyltrimethylammonium Bromide as Structure Directing Agent

Abstract

The purpose of this research is to synthesize zeolite from sugarcane bagasse ash using cetyltrimethylammonium bromide as structure directing agent. This research used cetyltrimethylammonium bromide surfactant to invent the high porosity, surface area, acidity and thermal stability of synthesized zeolite. The Silica was extracted by alkaline fusion using sodium hydroxide solution. The synthesis was conducted by hydrothermal process at 100 °C for 7 days, ageing process for 24 h and calcination at 500 °C for 5 h. The ratio of Si/Al (v/v) was 1, 15 and 25, meanwhile the concentration of cetyltrimethylammonium bromide was 5x10-4 M, 1x10-3 M and 1x10-2 M. The result showed all of product have strong absorbance at 950–1050 cm-1 and 620–690 cm-1, 420–460 cm-1, double ring at 520–570 cm-1, pore opening at 300–370 cm-1. Vibration of –OH as silanol group or water was indicated by broad absorbance at 3400–3450 cm-1. The diffractograms XRD showed that the product had high crystallinity. The composition of product on ratio Si/Al 1 with concentration of cetyltrimethylammonium 10-2 M is sodalite, the ratio Si/Al 15 and 25 are NaP1 and SiO2 quartz and contain 12.23% and 12.19% of Si, 4.17% and 13.18% of Al, respectively. Observation on SEM revealed that the crystal produced using cetyltrimethylammonium bromide were homogenous and regular in shape.

Keywords

• surfactant
• cetyltrimethylammonium bromide
• synthesis
• zeolite
• sugarcane bagasse