Oxidative coupling of bio-alcohols mixture over hierarchically porous perovskite catalysts for sustainable acrolein production

Essehaity, Al-Shaimaa M.; El‐Hafiz, Dalia R. Abd; Aman, Delvin; Mikhail, S.; Abdel‐Monem, Yasser K.

doi:10.1039/d1ra05627a

RSC Adv.

2021

DOI: 10.1039/d1ra05627a

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Oxidative coupling of bio-alcohols mixture over hierarchically porous perovskite catalysts for sustainable acrolein production

Al-Shaimaa M. Essehaity

Dalia R. Abd El‐Hafiz

Delvin Aman

et al.

Abstract: The figure illustrates the potential of perovskite as a catalyst for acrolein production via simultaneous oxidative coupling of renewable alcohols (ethanol and methanol) followed by aldol condensation of pre-formed aldehydes to form acrolein.

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Cited by 5 publications

References 44 publications

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Synergistic Catalysis by MgO Induced Acid‐Base Bifunctional Sites for Cross Condensation of HCHO and Acetaldehyde

Wang,

Shi,

et al. 2024

ChemCatChem

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Acid‐base synergistic catalysis greatly enhances the performance of MgO‐based catalysts in the Aldol condensation. Here, the effect of acid‐base strength/concentration/proportion and the synergistic catalysis on the performance of cross condensation between HCHO and acetaldehyde were studied. The NH3/CO2‐TPD results suggested that weak acidic sites combined with medium basic sites were beneficial for the cross condensation. The loading of MgO nanocrystals on SiO2 induced the generation of new acidic sites (Mg‐O‐Si). Combined with the inherent basic sites (Mg‐O‐Mg) and Mg‐O‐Si, the acid‐base bifunctions sites could catalyse the cross condensation of HCHO and acetaldehyde synergistically. The appropriate proportion of acidic/basic sites (10/1) is critical for the cross condensation in the presence of vast water in formalin. The effect of reaction parameters, including the molar ratio of substrates, reaction temperature, liner velocity and weight hourly space velocity, were investigated for the cross condensation. The results showed that 10 wt% MgO/SiO2 catalyst possessed the highest catalytic activity (57.9% conversion of acetaldehyde and 84.3% selectivity of acrolein) under the optimal reaction parameters among the investigated catalysts. The MgO/SiO2 can be reused and recovered its catalytic performance after in‐situ regeneration in air to remove the carbon deposition.

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Synergistic Catalysis by MgO Induced Acid‐Base Bifunctional Sites for Cross Condensation of HCHO and Acetaldehyde

Wang,

Shi,

et al. 2024

ChemCatChem

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Exploration of Hierarchically Porous Perovskite Ba0.5Sr0.5FeO3 Catalyst Through Experimental and Computational Investigations for Sustainable Synthesis of Acrolein

Essehaity,

Aman,

Abd El-Hafiz

et al. 2024

J Inorg Organomet Polym

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Ba0.5Sr0.5FeO3, SrMn0.5Fe0.5O3, and BaMn0.5Fe0.5O3 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 Ba0.5Sr0.5FeO3 perovskite sample has the highest catalytic performance at low temperatures (300○C) with 78% acrolein selectivity, followed by SrMn0.5Fe0.5O3 (65%), then BaMn0.5Fe0.5O3 (58%). The enhanced catalytic reactivity of Ba0.5Sr0.5FeO3 is associated with its effective acidic property and the ability to form O-vacancies easily, so, the strong proclivity for C–C coupling formation.

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Hydrogen from catalytic non-thermal plasma-assisted steam methane reforming reaction

Bajpai

Mehta

Joshi

et al. 2023

International Journal of Hydrogen Energy

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Oxidative coupling of bio-alcohols mixture over hierarchically porous perovskite catalysts for sustainable acrolein production

Abstract: The figure illustrates the potential of perovskite as a catalyst for acrolein production via simultaneous oxidative coupling of renewable alcohols (ethanol and methanol) followed by aldol condensation of pre-formed aldehydes to form acrolein.

Cited by 5 publications

References 44 publications

Synergistic Catalysis by MgO Induced Acid‐Base Bifunctional Sites for Cross Condensation of HCHO and Acetaldehyde

Synergistic Catalysis by MgO Induced Acid‐Base Bifunctional Sites for Cross Condensation of HCHO and Acetaldehyde

Exploration of Hierarchically Porous Perovskite Ba0.5Sr0.5FeO3 Catalyst Through Experimental and Computational Investigations for Sustainable Synthesis of Acrolein

Hydrogen from catalytic non-thermal plasma-assisted steam methane reforming reaction

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