Synthesis of Mg/Al Hydrotalcite by Using Low Supersaturated Precipitation Method With Variation of Mole Ratio

Abstract

This research aims to synthesize Mg/Al hydrotalcite with mole ratio variations of Mg/Al precursor through low supersaturated precipitation method. Mg/Al hydrotalcite was synthesized with Mg/Al mole ratio variation of 1:1, 2:1, 3:1, and 4:1. Mg/Al hydrotalcite was synthesized using NaOH and Na 2 CO 3 base solutions. The mixture of precursor was stirred for 2 hours then treated by hydrothermal at 100 °C for 4 hours. Results of the synthesis Mg/Al hydrotalcite with mole ratio variations is a white powder. The formation of the structure of Mg/Al hydrotalcite showed by certain peaks in the FTIR spectra and XRD diffractogram.The results of data analysisshowed that variation of mole ratio Mg/Alcauses a shift of peak in the XRD diffractogram shifted towards the left along with a comparative increase in mole ratio Mg/Al, but the main functional groups on the compound Mg/Al hydrotalcite increasingly formed with better.

Use of Mg-Al/hydrotalcite Catalyst in Biodiesel Production from Avocado Seed Oils: A Preliminary Study

“…The infra-red absorption of 1371 cm -1 was attributed to the symmetry stretching of O=C-O group[42], whereas stretching vibration of Al-O and Mg-O appears on the adjacent peaks of 503 and 449 cm-1 , respectively[37,43]. Septiyaningrum et al[44] reported that the Al-O and Mg-O could observe in distinctly region yet the increase of mole variation of hydrotalcite catalyst, the peak of Mg-O and Al-O are presumably difficult to be identified as shown in Figure2.…”