Pengaruh Penambahan Asam Oleat dan Asam Palmitat terhadap Ukuran Pori Silika dari Hasil Ekstraksi Silika Abu Boiler Pabrik Minyak Kelapa Sawit.

Abstract

Extraction of silica has made from boiler ash processing of palm oil by using varying concentrations of NaOH to increase yield of silica in a row from 7 N, 8N, and 9 N. and the obtained results are recpectively as39.20%, 62.50%, dan 64%. Analysis FT-IR spectrum showed a group of Si-O-Si and Si-OH which indicates silica material. Then characterization using XRD to demonstrate the diffraction peak of amorphous silica And BET analysis to find out the results of the nitrogen gas adsorption desorption showing the silica surface area, pore size, and pore volume respectively 60.08 m2/g, 79 Å, dan 61.20 cc/g. And also it been done the addition of oleic acid and palmitic acid as directores of the pore size on silica extraction results. The result of the addition of oleic acid different from the result of palmitic acid based adsorption desorption of nitrogen to the silica. Oleic acid is obtained using the surface area, pore size, and pore volume respectively 40.34 m2/g, 46.08 Å, dan 28.56 cc/g. Palmitic acid obtained while using surface area, pore size, and pore volume respectively 17.67 m2/g, 41.31 Å, dan 44.74 cc/g. Keywords: Boiler ash, extraction