catalytic cracking

noun
the reduction of the molecular weight of hydrocarbons by a catalyst, accomplished in a petroleum refinery by a type of chemical reactor (catalytic cracker) Compare cracker ( def 8 ), cracking ( def 1 ).
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Example sentences
Refined petroleum products are derived from crude oils through processes such as catalytic cracking and fractional distillation.
Catalytic cracking produces blending components for high-octane gasoline.
Distillation, thermal and catalytic cracking, and reforming and alkylation are the workhorses of the industry.
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