Fe-Mn catalysts have been used in the industrial synthesis of FT over the years (Rao, 1992 in Ika, 2011).

To increase the number of products, the catalyst Fe needs the help of Manganese (Mn) as a promoter (Catalysis). The iron catalyst is used more because it’s cheap and has a relatively higher activity. Catalyst used in synthesis of Fischer-Tropsch is a transition metal in the form of Fe (iron), Co (cobalt), Ni (nickel) or Ru (ruthenium). A catalyst is a chemical that can speed up the reaction, without being consumed in a reaction to participate and direct raw materials into the desired product so that a by-product can be reduced. Therefore, the syngas gasification can be raw materials in process of FT.Ī combination of biomass gasification and Fischer-tropsch synth esis or Biomass Gasification Fischer-Tropsch (BGFT) is an alternative way to produce renewable fuels. There are also side products namely tar (hydrocarbon compounds, such as benzene, toluene, complex, and others), H2S, HCN, NH3, dust and charcoal. Syngas consists of methane Gas (CH4 ), CO and H2 which is the main product of gasification. Gasification is a process of transforming biomass into synthetic gas (syngas) with high temperature warming. To get H2 and CO can be through the process of gasification.

Biomass is organic matter derived from plants, animals, agricultural waste, industrial waste, the rest of the metabolism of living beings like cattle dung or human, and others. The raw materials used in this process, namely coal, natural gas or biomass. H2 a nd CO will react on transition metal surfaces (metal elements that are in the 3-12 and d-block of the periodic table such as iron (Fe), manganese (Mn), and others) (Reni, 2011). The Fischer-Tropsch process (FT) manufacture of synthetic hydrocarbon compounds through reactions of hydro gen gas (H2) (commonly used by the fertilizer industry to make urea fertilizer) and carbon monoxide (CO) (results of the combustion gas is petrol or diesel in vehicles). Due to the success of these methods, then process to create artificial petroleum process called Fischer-Tropsch (FT). In the midst of the crisis, German scientists, Franz Fischer and Hans Tropsch, discovered a new method to convert coal into petroleum-made in 1920.

Since World War II, Germany is experiencing fuel crisis.

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