Evaluation of a Catalyst Durability in Absence and Presence of Toluene Impurity: Case of the Material CoNiMgAl Mixed Oxide Prepared by Hydrotalcite Route in Methane Dry Reforming to Produce Energy.

Ni, Co, Mg, and Al mixed-oxide solids, synthesized via the hydrotalcite route, were investigated in previous works toward the dry reforming of methane for hydrogen production. The oxide CoNiMgAl calcined at 800 °C, CoNiMgAl800, showed the highest catalytic activity in the studied series, which was ascribable to an interaction between Ni and Co, which is optimal for this Co/Ni ratio. In the present study, CoNiMgAl800 was compared to a commercial catalyst widely used in the industry, Ni(50%)/AlO, and showed better activity despite its lower number of active sites, as well as lower amounts of carbon on its surface, i.