Beta-oxidation is peroxisome is differentiated from that occurring in mitochondria by
H2O2 formed 

A modified form of [β -oxidation is found in peroxisomes and leads to formation of acetyl CoA and Hp, (instead of FADH, which is formed in mitochondrial [β -oxidation).
The system facilitates oxidation of very long chain fatty acids.
Acetyl CoA
H2O2  formed
Different enzymes are found in different sites
NADH is required