| dc.description.abstract | Research has been carried out on the formation of magnesium silicate pores
from rice husk ash with and without the addition of polyethylene glycol as a
template. This synthesis was carried out by extracting silica from rice husk ash
using an alkaline method using 10% NaOH. Sodium silicate obtained from rice
husks is mixed into MgO and 2.4 g of polyethylene glycol is added; 4.8g; and 7.2 g.
Magnesium silicate with and without the addition of the polyethylene glycol
template obtained was calcined at 9000C for 4 hours, then its characterization was
determined. The results of FT-IR spectrum analysis on rice husks indicated the
presence of Si-OH groups at a wavelength of 3399.3 cm-1 which is a characteristic
of silica material. The results of FT-IR spectrum analysis on magnesium silicate
with and without the addition of polyethylene glycol as template showed the
presence of Si-OH groups at a wavelength of 3448.72 cm-1 which is a characteristic
of silica material. The results of the XRD analysis showed the diffraction peaks of
MgSiO3 (enstatite) and Mg2SiO4 (forsterite). The results of BET analysis of
magnesium silicate showed that the pore size, pore volume and surface area were
5.36 nm, 0.02 cc/g and 10.09 m2/g, respectively. BET analysis results obtained are
different from the results of BET analysis of Magnesium silicate with the addition
of polyethylene glycol variations. Magnesium silicate with the addition of 2.4 g
polyethylene glycol showed pore size, pore volume and surface area of 6.32 nm,
0.005 cc/g and 9.62 m2/g, respectively. Magnesium silicate with the addition of 4.8
g polyethylene glycol showed pore size, pore volume and surface area of 6.53 nm,
0.003 cc/g and 9.51 m2/g, respectively. Magnesium silicate with the addition of 7.2
g polyethylene glycol showed pore size, pore volume and surface area of 6.88 nm,
0.002 cc/g and 8.95 m2/g. | en_US |
