NOx Storage Process Over Pt-BaO/Hydrotalcite(HT)-Derived Support: Effect of Mg/Al Ratios in HT Supports

Hydrotalcite materials with different Mg/Al ratios were prepared, resulting in the different amount of MgAl₂O₄ and Al₂O₃ in support. It was found that HT-derived supported sample gives rise to better thermal stability of barium nitrates than Al₂O₃, moreover, can be optimized for high temperature NSR application by changing Mg/Al ratios in HT support.