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Hematite (Fe 2 O 3 ) was successfully extracted from the Aceh iron ore mineral by precipitation method with employing s ulphuric acid (H 2 SO 4 ) as chemical agent.  Furthermore, the extracted hematite was modified with sodium metal (K), namely it doped with NaOH of 5% and 10% (w/w), respectively. Based on the characterization results using XRD and SEM- EDS proved that modified catalyst (Na 2 O /Fe 2 O 3) with their homogeneous size w ere resulted wh ile the hematite (Fe 2 O 3 ) particles was dopped with NaOH at its low concentration of (5% wt/wt), however while doping with the higher concentration of NaOH (10% w/w), agglomeration was taken place among the catalyst particles in which decreasing the surface area of the modified catalysts. Final ly , the modified catalyst (Na 2 O /Fe 2 O 3) was successfully applied as an inorganic catalyst on transesterification of coconut oil and methanol (T = 55 – 60 o C, 2 h) for forming methyl esters as biodiesel compounds .

jurnal natural/jurnal natural

PREPARATION OF INORGANIC CATALYST BASED HEMATITE (a-Fe2O3) COMPOUND EXTRACTED FROM ACEH IRON ORE MINERAL AND ITS CATALYTIC ACTIVITY ON TRANSESTERIFICATION OF COCONUT OIL