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Subject - Petrochemistry
Cracking is derived from the english verb "to crack". Cracking is a chemical process in which mostly organic substances are broken down into smaller components. For this to happen, substances either have to be heated under high pressure ( ) or heated in the presence of a catalyst ( ). Typical starting materials for the cracking process are the various fractions of crude oil.
Subject - Inorganic Chemistry
In the course of producing gasoline, hydrocarbons contained in crude oil are catalytically broken down in a fluidized bed reactor at 650-980 depositing coke with simultaneous release of ().
The produced mixtures of gases are subsequently separated by fractionation at low temperatures.
Recommended Learning Units
Alkanes: Cracking18 min.
This learning unit describes the cracking of alkanes. The industrial relevance of this process is explained using various examples.