A novel route of biogas 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-olefins, paraffin, wax) and chem- ical products [4,5]. Existing GTL technology includes conversion of methane (from natural gas or upgraded biogas) to syngas (a mixture of carbon monoxide (CO) and hydrogen gas (H2)) and subsequent syn- thesis to e.g. Fischer–Tropsch Diesel (FTD), methanol and dimethyl ether (DME) through catalytic synthesis. Interest in producing GTL fuels from biomass and biogas as available renewable feedstock 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 biofuel market.