Combustion engines can develop high frequency oscillations, leading to structural damage to the engines and unsafe operating conditions. A detailed understanding of the physical mechanism that causes these oscillations is ...
Condensed Matter
19 hours ago
1
9
For nearly half a century, astrophysicists and organic chemists have been on the hunt for the origins of C6H6, the benzene ring—an elegant, hexagonal molecule comprised of 6 carbon and 6 hydrogen atoms.
Materials Science
Jun 09, 2021
2
1711
Coal combustion by power plants and industry pollutes the air, causing many governments to implement mitigation actions and encourage cleaner forms of energy. Now, a new study in ACS' Environmental Science & Technology indicates ...
Environment
May 12, 2021
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24
Carbon dioxide emissions from fossil fuel combustion dropped 10% in the European Union last year amid the coronavirus pandemic, according to estimates from the EU's statistical office.
Environment
May 07, 2021
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67
Coal is in decline as an energy source. In recent decades, coal combustion has fallen from 50% of electricity generation to 20% of electricity generation in the United States, as natural gas and renewables like wind and solar ...
Environment
Apr 23, 2021
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6
Chinese scientists have proposed a highly reliable thermal power generator by combining thermoacoustic effect and triboelectric effect.
General Physics
Mar 26, 2021
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37
Long-chain alkanes, key chemical components of fossil fuels such as gasoline, contribute to urban air pollution even if they are not combusted, reports a study published in Communications Chemistry.
Other
Feb 22, 2021
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6
The simplest of organic molecules have a much more complex relationship with oxygen than previously thought. Researchers from KAUST and their international collaborators have shown that alkanes participate extensively in ...
Biochemistry
Feb 18, 2021
1
7
A team of Russian scientists from NUST MISIS, Tomsk Polytechnic University (TPU) and Boreskov Institute of Catalysis has suggested a new approach to modifying the combustion behavior of coal. The addition of copper salts ...
Environment
Feb 10, 2021
5
71
Did you know that in microgravity we are preparing one of the most promising fuels for the future?
Materials Science
Jan 15, 2021
2
15
Combustion (English pronunciation: /kəmˈbʌs.tʃən /) or burning is the sequence of exothermic chemical reactions between a fuel and an oxidant accompanied by the production of heat and conversion of chemical species. The release of heat can result in the production of light in the form of either glowing or a flame. Fuels of interest often include organic compounds (especially hydrocarbons) in the gas, liquid or solid phase.
In a complete combustion reaction, a compound reacts with an oxidizing element, such as oxygen or fluorine, and the products are compounds of each element in the fuel with the oxidizing element. For example:
A simple example can be seen in the combustion of hydrogen and oxygen, which is a commonly used reaction in rocket engines:
The result is water vapor.
Complete combustion is almost impossible to achieve. In reality, as actual combustion reactions come to equilibrium, a wide variety of major and minor species will be present such as carbon monoxide and pure carbon (soot or ash). Additionally, any combustion in atmospheric air, which is 78% nitrogen, will also create several forms of nitrogen oxides.
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