A novel route of bio gas conversion to vehicle fuel is gas-to-liquid (GTL) technology, a means to exploit gaseous energy sources as fuel, higher hydrocarbons (e.g. ethylene, a-ole fins, paraffin, wax) and chemical products [4,5]. Existing GTL technology includes conversion of methane (from natural gas or upgraded bio gas) to syngas (a mixture of carbon monoxide (CO) and hydrogen gas (H2)) and subsequent syn- thesis to e.g. Fischer Diesel (FTD), methanol and dim ethyl ether (DME) through catalytic synthesis. Interest in producing GTL fuels from biomass and biogas as available renewable feed stock is in- creasing [6,7]. Moreover, the current situation of high oil prices and an- ticipation of increased market share for diesel fuels presents an entry point for GTL alternatives to the bio fuel market.