摘要: Methane, CH4, here represents natural gas (NG) of which it is the main constituent. Routes of chemical utilisation of NG --- as opposed to energy usage --- are discussed. A main step is the conversion of NG to synthesis gas, a mixture of CO and H2. Simple molecules derived from synthesis gas, like methanol, can be further reacted to longer-chained hydrocarbons like propylene and other olefins and even to gasoline and diesel.