Alkanes - FSC Flashcards
1
Q
How can we separate alkanes
A
Via fractional distillation
3
Q
Fractional distillation fractions
A
4
Q
What is cracking
A
Converting long chain hydrocarbons into shorter chain hydrocarbons that are more useful.
5
Q
Thermal cracking
A
conditions:
temp - 450 to 900 degrees
70 atm
Forms:
- Long chain alkanes form shorter chain alkanes and alkenes. Sometimes hydrogen is produced
6
Q
Catalytic cracking
A
Conditions:
450 degrees celsisus
1-2 atm (doesnt reuire hogh press)
Uses a Zeolite catalyst : aluminum oxide and silicon dioxide
products are often branch chained alkanes, can produce benzene and cyclic alkanes
