Résumé
Calcined CoMgAl LDHs and a Co-impregnated LDH were characterized by XRD, N2 physisorption, TPR and ICP elemental analysis, then tested in the selective catalytic reduction (SCR) of NO with ammonia. Cobalt deposited by impregnation on LDH leads to the more active and selective catalyst. On this type of catalyst nearly 80% of conversion and selectivity to N2 were reached at 578 K with a volume space velocity of 2200 h-1.