Process for converting synthesis gas to higher hydrocarbons, at an elevated temperature and pressure is Fischer-Tropsch process

When syn gas reacts with excess of hydrogen in presence of nickel catalyst then we get mixture of hydrocarbons which can be used as a substiute for petrol.

The Fischer-Tropsch process is a catalyzed chemical reaction in which synthesis gas (syngas), a mixture of carbon monoxide and hydrogen, is converted into liquid hydrocarbons of various forms. The most common catalysts are based on iron and cobalt, although nickel and ruthenium have also been used. The principal purpose of this process is to produce a synthetic petroleum substitute, typically from coal, natural gas or biomass, for use as synthetic lubrication oil or as synthetic fuel. This synthetic fuel runs trucks, cars, and some aircraft engines. The use of diesel is increasing in recent years

Combination of biomass gasification (BG) and Fischer-Tropsch (FT) synthesis is a possible route to produce renewable transportation fuels (biofuels).