145363
Beschreibung
Mindmap von toby_brown, aktualisiert more than 1 year ago
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Erstellt von toby_brown
vor mehr als 13 Jahre
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Obtaining useful
substances from crude oil
- Long thick gloopy molecules form
things like tar which have limited
uses
- However, these long
molecules can be shortened
by a process called cracking
- However, these long
molecules can be shortened
by a process called cracking
- Cracking
- Thermal decomposition reaction
- Breaking down
molecules by
heating them
- Breaking down
molecules by
heating them
- How to do it
- Heat the long-chain
hydrogen to vaporise
it
- The vapour passes over
a powdered catalyst
(aluminium oxide)
- The long chain
molecules 'crack' on the
surface of the catalyst
- Shorter alkane
- Can be used for
fuels like parrafin
and petrol
- Can be used for
fuels like parrafin
and petrol
- Alkene
- Make plastics
- C3H6
- Propene
- Propene
- H-C-C=C
- Prop-1-ene
- Prop-1-ene
- H H H
- H H
- React with bromine
water, declourising
it
- C2H4
- Propene
- Propene
- Make plastics
- Shorter alkane
- The long chain
molecules 'crack' on the
surface of the catalyst
- Mix the vapour
with steam at a
very high
temperature
- The vapour passes over
a powdered catalyst
(aluminium oxide)
- Heat the long-chain
hydrogen to vaporise
it
- Thermal decomposition reaction
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