Catalytic cracking in chem

Catalytic craking is cracking by using catalyst, the reaction , catalysed by catalyt, can perform at lower temperature and pressure. Thus is prefered by chemist and industrialist.

For catalystic carking, what you need is catalyst(Al2O3 or SiO2) and a long chian hydrocarbon, after than, the product is random, you can create the product(the product can be carbon, hydrocarbon or hydrogen) by yourself when you balance a equation. BUT ONLY thing need is, the product MUST contain at least one alkene, then thats enough.

for example,
C8H18 --cracking, use Al2O3------------> C4H10 + C4H8(alkene)
or
C8H18 -cracking use Al2O3-----> C3H6(alkene) + C3H8 + C2H4(alkene)
or
C8H18 -craking use Al2O3---> CH4 + C6H12(alkene) + H2 + C

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