Exploration of Hierarchically Porous Perovskite Ba0.5Sr0.5FeO3 Catalyst Through Experimental and Computational Investigations for Sustainable Synthesis of Acrolein
Al-Shaimaa M. Essehaity, Delvin Aman, Dalia R. Abd El‐Hafiz, Ghada E. Khedr, S. Mikhail, Yasser K. Abdel‐Monem
Abstract
Abstract Ba 0.5 Sr 0.5 FeO 3 , SrMn 0.5 Fe 0.5 O 3, and BaMn 0.5 Fe 0 . 5 O 3 perovskite catalysts were synthesized via the hydrothermal method. The developing perovskite catalysts with dual bed, redox and acid/base sites, for direct oxidation reactions is one of the recent/important research ideas. Therefore, this study deals with the impact of substituting A and/ or B sites on the catalytic oxidative reactivity of mixed oxides perovskite catalysts. Then, their reactivity was tested in a single reactor oxidative coupling of methanol/ethanol mixture for sustainable acrolein production. The Ba 0.5 Sr 0.5 FeO 3 perovskite sample has the highest catalytic performance at low temperatures (300 ○ C) with 78% acrolein selectivity, followed by SrMn 0.5 Fe 0.5 O 3 (65%), then BaMn 0.5 Fe 0.5 O 3 (58%). The enhanced catalytic reactivity of Ba 0.5 Sr 0.5 FeO 3 is associated with its effective acidic property and the ability to form O-vacancies easily, so, the strong proclivity for C–C coupling formation.