5: Natural Gas and Biogas
Natural gas consists mainly of methane (CH4) and ethane (CH3CH3) and other hydrocarbons in small quantities. Depending on the source it may also contain CO2, nitrogen (N2), hydrogen sulfide (H2S) and helium (He). It is very abundant and its combustion contributes to the increase of the CO2 content in the biosphere. Natural gas is a non-renewable fuel (Section 5.1). It is widely used to produce electricity, heat, chemicals including hydrogen, and hydrocarbons (liquid fuels) and as a fuel for motor vehicles…
- acetylene (C2H2)
- ammonia (NH3)
- ammonium nitrate (NH4NO3)
- anaerobic fermentation
- benzene (C6H6)
- binding energy
- biomethane (CH4)
- butane (C4H10)
- burning ice
- calorimetry
- carbene methylene (H2C:)
- carbon dioxide (CO2)
- clathrate
- combustion
- decarburation (decarburization)
- endothermic reaction
- enthalpy of homolytic dissociation
- ethane (C2H6)
- ethylene (C2H4)
- exothermic reaction
- fragmentation
- Haber-Bosch process
- heat of reaction
- heterolysis
- homolysis
- hydrate
- hydrogen (H2)
- hydride affinity
- hydrogen radical (H·)
- liquid fuels from methane
- methanation
- methane (CH4)
- methane clathrate methanol (CH3OH)
- methyl radical (·CH3)
- nanocage
- propane (C3H8)
- Ostwald process
- proton affinity
- reforming
- Sabatier reaction
- standard heat of formation
- syngas
- thermal efficiency
- water
- water-gas shift reaction
- wildfire