Table 2. Apparent activation energies (Ea’) for the direct decomposition of NO.

Mode/Temperature conditions	Catalyst	Ea’ (kJ/mol)a	References
Direct decomposition of NO	–	364	40
CRM, 579–733 K	Cu/ZSM-5	123	41
CRM,500–650 °C	Cu-ZSM-5	71–121	42
CRM,500–650 °C	Cu-ZSM-5	75.6	this work
MCRM,200–250 °C	Cu-ZSM-5	25.04	this work
MCRM,120–200 °C	CuO-Cu-ZSM-5	22.47–25.73	this work
MCRM, 360–400 °C	CuO-Cu-ZSM-5	19.55–22.81	this work

^aEa’ was calculated using the Arrhenius equation; was used to calculate the kinetic data⁴¹.