Performance of layered birnessite-type manganese oxide in the thermal-catalytic degradation of polyamide 6

► Synthesis, characterization, and catalytic properties of LMO were discussed. ► The LMO presented an excellent catalytic property to decomposition of PA6. ► A marked reduction in the degradation temperature in the presence of LMO. ► The thermal-catalytic degradation efficiency increased with increasing the amount of LMO. ► The thermal oxidation mechanisms were investigated by IR, XRD and TA techniques.