1
Q
How Cracking works
A
Long chain molecules are converted into short chain hydrocarbons
Thermal decomposition
2
Q
Condition for Cracking
Catalyst
Temperature
A
Catalyst: silica or aluminium Oxide
Temperature: 600-700 degrees
3
Q
Why is cracking required after fractional distillation of crude oil:
Reactivity
A
Apart from burning fractions are fairly inert. Cracking forms molecules with double bonds (more reactive) instead of single carbon-carbon bonds
4
Q
Order of Crude oil fractions
A
Refinery gasses Gasoline Kerosene Disel Oil Fuel oil Bitumen
5
Q
Why is cracking required after the fractional distillation of crude oil
Demand
A
More long chain molecules that can be used directly
Not enough enough small chain hydrocarbons
