SINTESIS ZEOLIT A DARI ABU LAYANG DAN PEMANFAATANNYA UNTUK MENDAPATKAN BASE OIL DARI MINYAK MENTAH (CRUDE OIL) ASAL BANGKO, ROHIL-RIAU

Abstract

Zeolite A is a synthetic zeolite that contains alumina silicate and formed tetrahedral units. One of the material that can be used to synthesize zeolite A is a fly ash that result of fuel combustion in the coal fired power plant (PLTU). The objective of this studywas to use zeolite A as molecular sieves to separating n-paraffins from other factions in Bangkocrude oil, Rohil. Synthesis ofzeolite was carried through the fusion of the fly ash with NaOH at the temperature of 5000C. Zeolites were characterized by XRD that showed diffraction pattern that resembles the diffraction pattern of zeolite A by JCPDS No. 01-076-0910. From the FTIR spectra indicated the group of Si-O-Si and Al-O-Al in the zeolite. From the XRF showed a concentration ratio of Si/Al was 1,3. Fractionation of bangko crude oil was conducted using stationary phase active silica and n-hexane as a solvent to separate the fractions of saturate. The fraction of saturate crude oil was fractionated using zeolite A which aim to get crude oil n-paraffins type. From the result of the chromatogram fractionation using activated silica,it can be seen that the active silica capable of filtering the carbon atom to C30 of fractions saturat crude oil. Whereas, the results of the chromatogram molecular sieve using zeolite A was indicated the existence of the fraction saturat retained on the zeolite A, until zeolite A number carbon atoms were reduced to C27. Zeolite A can separates crude oil from the type of n-paraffin which another fractions of bangko crude oil which has an average efficiency of 98.65 %.