2.5 Developing Fuels

Cracking

Cracking ­ any reaction in which a larger molecule is made into smaller molecules






Cracking reactions can vary. Some types of cracking are:

Alkanes branches alkanes + branched alkenes
Alkanes Smaller alkanes + cycloalkanes
Cycloalkanes alkenes + branched alkenes
Alkenes smaller alkenes

In catalytic cracking, a…

Heterogeneous catalyst

The reactants and catalyst are in different physical states. This
usually involves gas or liquid reactants and a solid catalyst.

(1) The reactants are adsorbed onto the surface of the catalyst.
As a result, bonds in the reactants are weakened.
(2) The weakened bonds in the reactant molecules…

Naming Alkenes