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Thermal decomposition

From Simple English Wikipedia, the free encyclopedia

Thermal decomposition, also called thermolysis (roughly "to break with heat"), is a process where heat causes a chemical compound to break down into simpler chemical compounds or elements.[1]

If the compound is exposed to oxygen, usually from the air, the reaction is called calcination.[2] If an inert gas is used instead of air, it is pyrolysis.[3]

Cracking is the thermolysis of large molecules like hydrocarbons, with or without a catalyst.[4]

References

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  1. Kerry K. Karukstis; Gerald R. Van Hecke, Chemistry Connections: The Chemical Basis of Everyday Phenomena (Boston: Academic Press, 2003), p. 63
  2. International Union of Pure and Applied Chemistry. "Calcination". Compendium of Chemical Terminology Internet edition.
  3. International Union of Pure and Applied Chemistry. "Pyrolysis". Compendium of Chemical Terminology Internet edition.
  4. International Union of Pure and Applied Chemistry. "Cracking". Compendium of Chemical Terminology Internet edition.