Cracking crude oils
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Last updated 5:50 PM on 4/28/25
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9 Terms
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What is cracking?
Thermal decomposition - breaking down of long-chain alkanes into alkenes and shorter-chain alkanes
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What types of cracking are there?
Thermal and Catalytic
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How to use catalytic cracking?
- Heat the long term hydrocarbons until it is vaporised (turned into a gas)
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- Pass vapoured hydrocarbons over the catalyst (hot powdered aluminium oxide)
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- As the long hydrocarbons come into contact with the catalyst they will split apart into two smaller hydrocarbons
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How to use steam cracking?
- Heat the long term hydrocarbons until it is vaporised (turned into a gas)
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- Mix them with steam
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- Heat them to a very high temperature = long hydrocarbon chains split apart
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Balanced chemical equations for cracking
Long chain alkane --> shorter alkane + alkene
Note 
Flashcards (72)