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Hydrocarbon compound (CH4) in natural gas
Methane (US: /ˈmɛθeɪn/ METH-ayn, UK: /ˈmiːθeɪn/ MEE-thayn) is a chemical compound that has the chemical formula CH4 (one carbon atom bonded to four hydrogen
Methane
Methane (CH4) in Earth's atmosphere
the methane concentration in the atmosphere has increased by about 160%, and human activities almost entirely caused this increase. Since 1750 methane has
Atmospheric_methane
Emergency service protocol
as part of their emergency action principles. An alternative mnemonic METHANE adds an additional prompt "Major Incident Declared?" to ensure consideration
ETHANE
Methane-water lattice compound
Methane clathrate (CH4·5.75H2O) or (4CH4·23H2O), also called methane hydrate, hydromethane, methane ice, fire ice, natural gas hydrate, methane gas, or
Methane_clathrate
English entertainer
Paul Oldfield, better known by his stage name Mr. Methane, is a British flatulist who started performing in 1991. He briefly retired in 2006, but restarted
Mr._Methane
Conversion of carbon monoxide and carbon dioxide (COx) to methane (CH4)
Methanation is the conversion of carbon monoxide and carbon dioxide (COx) to methane (CH4) through hydrogenation. The methanation reactions of COx were
Methanation
Unintended escape of methane from containment
A methane leak is a significant natural gas leak. The term is used for a class of methane emissions, which can come from an industrial facility or pipeline
Methane_leak
Form of natural gas extracted from coal beds
Coalbed methane (CBM or coal-bed methane), coalbed gas, or coal seam gas (CSG) is a form of natural gas extracted from coal beds. In recent decades it
Coalbed_methane
Methanizer is an appliance used in gas chromatography (GC), which allows the user to detect very low concentrations of carbon monoxide and carbon dioxide
Methanizer
Potential method of reducing climate change
Atmospheric methane removal is a category of potential approaches being researched to accelerate the breakdown of methane that is in the atmosphere, for
Atmospheric_methane_removal
Method for producing hydrogen and carbon monoxide from hydrocarbon fuels
Steam reforming or steam methane reforming (SMR) is a method for producing syngas (hydrogen and carbon monoxide) by reaction of hydrocarbons with water
Steam_reforming
Gaseous fossil fuel
Natural gas (also gas, methane gas or fossil gas) is a fossil fuel, naturally occurring in geological formations. Typically, the gas is a mix of gaseous
Natural_gas
A methane reformer is a device based on steam reforming, autothermal reforming or partial oxidation and is a type of chemical synthesis which can produce
Methane_reformer
Largest moon of Saturn
candidate for this interior reservoir is methane hydrate, or "methane-filled ice," within Titan's icy shell. Methane hydrate has been shown experimentally
Titan_(moon)
Oxygen-free break down of material
digestion reduces sludge volume and pathogen content while generating methane-rich biogas that can be used for renewable energy production. The liquid
Anaerobic_digestion
Ocean floor area with hydrocarbon-rich seepage
area of the ocean floor where seepage of fluids rich in hydrogen sulfide, methane, and other hydrocarbons occurs, often in the form of a brine pool. Cold
Cold_seep
Sources of methane gas in Earth's atmosphere
Sources of methane emissions due to human activity (year 2020 estimates) Fossil Fuel Use (33.0%) Animal Agriculture (30.0%) Plant Agriculture (18.0%)
Methane_emissions
Formation of methane by microbes
Methanogenesis or biomethanation is the formation of methane coupled to energy conservation by microbes known as methanogens. It is the fourth and final
Methanogenesis
Type of saturated hydrocarbon compound
formula CnH2n+2. The alkanes range in complexity from the simplest case of methane (CH4), where n = 1 (sometimes called the parent molecule), to arbitrarily
Alkane
Meteorological hypothesis
occasionally released methane clathrate on upper continental slopes. This would have had an immediate impact on the global temperature, as methane is a much more
Clathrate_gun_hypothesis
1993 video game
Super Methane Bros. is an action video game released by Apache Software for the Amiga in 1993. It is similar in gameplay to Taito's 1986 arcade game,
Super_Methane_Bros.
Earth's most severe extinction event
ignited by the eruptions; emissions of methane from the gasification of methane clathrates; emissions of methane by novel methanogenic microorganisms nourished
Permian–Triassic extinction event
Permian–Triassic_extinction_event
Ship built in 1945
Methane Pioneer was the first oceangoing liquified natural gas tanker in the world. Built in 1945 as a cargo ship named Marline Hitch, the vessel was
Methane_Pioneer
Type of microorganism that uses methane as a carbon source
Methanotrophs (sometimes called methanophiles) are prokaryotes that metabolize methane as their source of carbon and chemical energy. They are bacteria or archaea
Methanotroph
Heat-trapping gas in an atmosphere
order of average global mole fraction, are: water vapor, carbon dioxide, methane, nitrous oxide, ozone. Other greenhouse gases of concern include chlorofluorocarbons
Greenhouse_gas
Production of methane by microorganisms
Biological methanation (also: biological hydrogen methanation (BHM) or microbiological methanation) is a conversion process to generate methane by means
Biological_methanation
International climate initiative
The Global Methane Pledge is an international initiative announced in 2021 that seeks to reduce global emissions of methane. The initiative was proposed
Global_Methane_Pledge
Organic compound consisting entirely of hydrogen and carbon
diverse range of molecular structures and phases: they can be gases (such as methane and propane), liquids (such as hexane and benzene), low melting solids
Hydrocarbon
Presence of methane on Mars
Natural methane on Mars refers to reports of detection of methane (CH4) in Mars's atmosphere. The potential presence of methane in the atmosphere of Mars
Natural_methane_on_Mars
Cereal grain and staple food
croplands, some 30% of agricultural methane emissions, and 11% of agricultural nitrous oxide emissions. Methane is released from rice fields subject
Rice
Release of methane in the Arctic
Arctic methane emissions contribute to a rise in methane concentrations in the atmosphere. Whilst the Arctic region is one of many natural sources of
Arctic_methane_emissions
Gases produced by decomposing organic matter
digester or other type of bioreactor. The gas composition is primarily methane (CH 4) and carbon dioxide (CO 2) with small amounts of hydrogen sulfide
Biogas
Methane Princess and Methane Progress were the first purpose-built LNG carriers, entering service in 1964 and used to transport natural gas from Algeria
Methane_Princess
Chemical data page
This page provides supplementary chemical data on methane. The handling of this chemical may incur notable safety precautions. Table data obtained from
Methane_(data_page)
United Nations initiative
International Methane Emissions Observatory (IMEO) of the UN Environment Programme is an initiative that tackles the problem of methane emissions through
International Methane Emissions Observatory
International_Methane_Emissions_Observatory
Chemical Reaction
of methane (OCM) is a potential chemical reaction studied in the 1980s for the direct conversion of natural gas, primarily consisting of methane, into
Oxidative_coupling_of_methane
Assessments of possible life on Mars
2018, NASA announced the detection of seasonal variation of methane levels on Mars. Methane could be produced by microorganisms or by geological means
Life_on_Mars
Thermal decomposition of materials
from coal. It is used also in the conversion of natural gas (primarily methane) into hydrogen gas and solid carbon char, recently introduced on an industrial
Pyrolysis
Organic chemicals having a high vapor pressure at room temperature
terpenoids, alcohols, and carbonyls (methane and carbon monoxide are generally not considered). Not counting methane, biological sources emit an estimated
Volatile_organic_compound
Potential heat absorbed by a greenhouse gas
considered. For example, methane (CH4) has a GWP over 20 years (GWP-20) of 81.2 meaning that, a leak of a tonne of methane is equivalent to emitting
Global_warming_potential
Rate of human-caused greenhouse gas emissions
some of these emissions such as methane from farming are harder to phase out. Emissions of short-lived gases such as methane do not accumulate in the climate
Net-zero_emissions
Space mission to study global methane emissions
MethaneSAT was an American-New Zealand space mission in 2024–25. It was an Earth observation satellite that monitored and studied global methane emissions
MethaneSAT
Microbial process in anoxic marine and freshwater sediments
Anaerobic oxidation of methane (AOM) is a methane-consuming microbial process occurring in anoxic marine and freshwater sediments. AOM is known to occur
Anaerobic oxidation of methane
Anaerobic_oxidation_of_methane
operations that destroys gaseous methane at a high temperature. Ventilation Air Methane Thermal Oxidizers are used to destroy methane in the exhaust air of underground
Ventilation air methane thermal oxidizer
Ventilation_air_methane_thermal_oxidizer
Methane molecules that contain two or more rare isotopes
Methane clumped isotopes are methane molecules that contain two or more rare isotopes. Methane (CH4) contains two elements, carbon and hydrogen, each of
Methane_clumped_isotopes
Source of gas emissions
concern consist primarily of methane and nitrous oxide emissions. Wetlands are the largest natural source of atmospheric methane in the world, and are therefore
Greenhouse gas emissions from wetlands
Greenhouse_gas_emissions_from_wetlands
Void between celestial bodies
Cyanoformaldehyde Cyanomethyl Cyclopropenylidene Formic acid Isocyanoacetylene Ketene Methane Methoxy radical Methylenimine Propadienylidene Protonated formaldehyde
Outer_space
Chemical compound
Tris(dimethylamino)methane (TDAM) is the simplest representative of the tris(dialkylamino)methanes of the general formula (R2N)3CH in which three of the
Tris(dimethylamino)methane
Gaseous fossil fuel
gas is a type of biogas, which is approximately forty to sixty percent methane, with the remainder being mostly carbon dioxide. Landfill gas often contains
Landfill_gas
Dwarf planet in the Kuiper belt
similar to that of Pluto: it is highly reflective, covered largely by frozen methane, and stained reddish-brown by tholins. Makemake has one known moon, which
Makemake
Possible alternative biochemicals used by life forms
molecule, and cosmically abundant; and non-polar hydrocarbon solvents such as methane and ethane, which are known to exist in liquid form on the surface of Titan
Hypothetical types of biochemistry
Hypothetical_types_of_biochemistry
Method for extracting methane from a coal deposit
Coalbed methane extraction (CBM extraction) is a method for extracting methane from a coal deposit. Coal bed methane (CBM) is one of the factors restricting
Coalbed_methane_extraction
CHCl3, historical anaesthetic and common solvent
geometry with C3v symmetry. The chloroform molecule can be viewed as a methane molecule with three hydrogen atoms replaced with three chlorine atoms,
Chloroform
Purported inhalant drug
They tap the bottles on the ground, taking care to leave enough room for methane to form at the top." The effects of jenkem inhalation supposedly last for
Jenkem
Methane-enriched biogas
and has a methane concentration of 90% or greater. By removing carbon dioxide and other impurities from biogas, the concentration of methane is high enough
Renewable_natural_gas
methane whistle is based on the fact that the sound when blowing a whistle depends on the speed of sound in the gas. The sound velocities of methane and
Firedamp_whistle
Species of annelid worm
species of polychaete worm that inhabits methane clathrate deposits in the ocean floor. The worms colonize the methane ice and appear to survive by gleaning
Sirsoe_methanicola
methane clathrate the atmosphere decaying organic material with the exact distribution so far determined by the methane cycle/carbon cycle. Methane as
Methane_reservoir
Chemical compound
Bis-tris methane, also known as BIS-TRIS or BTM, is a buffering agent used in biochemistry. Bis-tris methane is an organic tertiary amine with labile
Bis-tris_methane
Methane monooxygenase (particulate) (EC 1.14.18.3) is an enzyme with systematic name methane,quinol:oxygen oxidoreductase. This enzyme catalyses the following
Methane monooxygenase (particulate)
Methane_monooxygenase_(particulate)
Non-methane volatile organic compounds (NMVOCs) are a set of organic compounds that are typically photochemically reactive in the atmosphere—marked by
Non-methane volatile organic compound
Non-methane_volatile_organic_compound
Eighth planet from the Sun
nitrogen, but contains a higher proportion of ices such as water, ammonia and methane. Similar to Uranus, its interior is primarily composed of ices and rock;
Neptune
Class of enzymes
Methane monooxygenase (MMO) is an enzyme capable of oxidizing the C-H bond in methane as well as other alkanes. Methane monooxygenase belongs to the class
Methane_monooxygenase
Potential biological pathway for atmospheric methane production
Aerobic methane production is a potential biological pathway for atmospheric methane (CH4) production under oxygenated conditions. The existence of this
Aerobic_methane_production
Methanation process of carbon dioxide with hydrogen
The Sabatier reaction or Sabatier process produces methane and water from a reaction of hydrogen with carbon dioxide at elevated temperatures (optimally
Sabatier_reaction
Greenhouse gases emitted from human activities
resulting from human activities. It accounts for more than half of warming. Methane (CH4) emissions have almost the same short-term impact. Nitrous oxide (N2O)
Greenhouse_gas_emissions
Largest methane field in Europe
methane field in Groningen province in the northeastern part of the Netherlands. With an estimated 2,740 billion cubic metres of recoverable methane (most
Groningen_gas_field
Liquid form of rocket propellants
therefore never flown. Liquid methane and liquid oxygen used together as rocket propellants are known as methalox propulsion. Methane is the primary component
Liquid_rocket_propellant
Medical diagnostic test
A hydrogen breath test (HBT) or hydrogen-methane breath test is a breath test used as a diagnostic tool for small intestine bacterial overgrowth (SIBO)
Hydrogen_breath_test
Area of astronomical research
dubbed the Missing Methane Problem. Some studies tried to explain this with a depletion of methane. The most solid detection of methane is in the atmosphere
Extraterrestrial_atmosphere
electrofuel production where methane is produced by direct biological conversion of electrical current and carbon dioxide. Methane producing technologies garnered
Electromethanogenesis
Flammable gas found in coal mines
Firedamp is any flammable gas, typically coalbed methane, that is found in coal mines. It is particularly found in areas where the coal is bituminous
Firedamp
Chemical compound
2H stand for deuterium. It is a colorless gas. It is a heavy analog of methane, where all four hydrogen atoms are replaced by deuterium atoms. The molar
Tetradeuteromethane
Organic compound (H–CHO); simplest aldehyde
(/fɔːrˈmældɪhaɪd/ for-MAL-di-hide, US also /fər-/ fər-) (systematic name methanal) is a pungent colorless gas mainly used in the production of industrial
Formaldehyde
Pumping fluids or gas through pipes
gas line carries Marcellus shale gas from Pennsylvania and other tied in methane or natural gas sources into the Canadian province of Ontario. It began
Pipeline
Impact of farming animals on the environment
their burps are the main source of methane emissions from land use, land-use change, and forestry. Together with methane and nitrous oxide from manure, this
Environmental impacts of animal agriculture
Environmental_impacts_of_animal_agriculture
Natural gas field in Japan
Nankai Methane Hydrate Site (or Japanese Methane Hydrate R&D Program at Nankai, Nankai Trough Methane Hydrate Site) is located in the Nankai Trough, Japan
Nankai Trough gas hydrate site
Nankai_Trough_gas_hydrate_site
Chemical compound
1,1-Bis(diphenylphosphino)methane (dppm), is an organophosphorus compound with the formula CH2(PPh2)2. Dppm, a white, crystalline powder, is used in inorganic
Bis(diphenylphosphino)methane
Chemical compound
Tetrakis(acetoxymercuri)methane is an organomercury compound with the formula C(HgO2CCH3)4. It was obtained in the investigation of Hofmann's base ([CHg4O(OH2)](OH)2)
Tetrakis(acetoxymercuri)methane
Tetrakis(acetoxymercuri)methane
Country in South America
contributions to climate change due to historical emissions of carbon dioxide, methane and nitrous oxide, doi:10.5281/zenodo.14054503, retrieved 26 February 2025
Brazil
Negative ion of methane
Negative methane is the negative ion of methane, meaning that a neutral methane molecule captured an extra electron and became an ion with a total negative
Negative_methane
Digestive process that emits methane
livestock contribute to around 34.5 percent of the total anthropogenic methane emissions. Ruminant animals are those that have a rumen. A rumen is a multichambered
Enteric_fermentation
Process of converting methane to another molecule
Methane functionalization is the process of converting methane in its gaseous state to another molecule with a functional group, typically methanol or
Methane_functionalization
South African industrial accident
A methane explosion occurred at the Hlobane Colliery, Natal, South Africa on 12 September 1983, killing 68 miners. The disaster occurred on the 39th anniversary
Hlobane Coal Mine Disaster (1983)
Hlobane_Coal_Mine_Disaster_(1983)
Hoofed herbivorous grazing or browsing mammals
digestive physiology. Methane is produced by a type of archaea, called methanogens, as described above within the rumen, and this methane is released to the
Ruminant
Chemical compound
Studies have demonstrated that methane output is lowered by 30%. DSM has patented and commercialized 3-NOP as a methane inhibitor for production animals
3-Nitrooxypropanol
Organosulfur chemical compound used as a solvent
sulfoxide Names Preferred IUPAC name (Methanesulfinyl)methane Systematic IUPAC name (Methanesulfinyl)methane (substitutive) Dimethyl(oxido)sulfur (additive)
Dimethyl_sulfoxide
Reusable superheavy-lift general-purpose launch vehicle
the Starship spacecraft, both powered by Raptor engines burning liquid methane (the main component of natural gas) and liquid oxygen. Both stages are
SpaceX_Starship
Burning natural gas field in Turkmenistan
average of about 1,300 kilograms of methane per hour from 2022 to 2025. Data collected in October 2025 shows methane emission of 1,960 kilograms per hour
Darvaza_gas_crater
Global warming about 55 million years ago
the initial perturbation is that of methane clathrates. Under certain temperature and pressure conditions, methane – which is being produced continually
Paleocene–Eocene thermal maximum
Paleocene–Eocene_thermal_maximum
Hydrocarbon lakes on Titan, a moon of Saturn
Lakes of liquid ethane and methane exist on the surface of Titan, Saturn's largest moon. This was confirmed by the Cassini–Huygens space probe, as had
Lakes_and_rivers_of_Titan
International partnership to reduce methane emissions
The Global Methane Initiative (GMI) is a voluntary, international partnership that brings together national governments, private sector entities, development
Global_Methane_Initiative
SpaceX family of liquid-fuel rocket engines
to power a vehicle in flight. The engine is powered by cryogenic liquid methane and liquid oxygen, a combination known as methalox. SpaceX's super-heavy-lift
SpaceX_Raptor
Chemical compound
Triphenylmethane or triphenyl methane (sometimes also known as Tritan), is the hydrocarbon with the formula (C6H5)3CH. This colorless solid is soluble
Triphenylmethane
Material used to create heat and energy
carbon:hydrogen ratios like methane, to liquid petroleum to nonvolatile materials composed of almost pure carbon, like anthracite coal. Methane can be found in hydrocarbon
Fuel
Industrial renewable energy facility
A biogas upgrader is a facility that is used to concentrate the methane in biogas into biomethane, also known by its trade name as Renewable Natural Gas
Biogas_upgrader
despite having a far lower surface temperature. Its thick atmosphere, methane rain, and possible cryovolcanism create an analogue, though with different
Climate_of_Titan
sulfate-methane transition zone (SMTZ) is a zone in oceans, lakes, and rivers typically found below the sediment surface in which sulfate and methane coexist
Sulfate-methane transition zone
Sulfate-methane_transition_zone
Chinese oil producer
Starting from 15 September 2009, the pipeline is also supplied with coalbed methane from the Qinshui Basin in Shanxi. Construction of the second West–East
PetroChina
Chemical acid found in vinegar
440 °C (824 °F), acetic acid decomposes to produce carbon dioxide and methane, or to produce ketene and water: CH3COOH → CH4 + CO2 CH3COOH → CH2=C=O
Acetic_acid
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