Sustainable acrolein production from bio-alcohols on spinel catalysts: Influence of magnesium substitution by various transition metals (Fe, Zn, Co, Cu, Mn)

Folliard, Vincent; Postole, G.; Marra, Livia; Dubois, Jean‐Luc; Auroux, A.

doi:10.1016/j.apcata.2020.117871

Cited by 10 publications

(10 citation statements)

References 57 publications

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“…Experimental work to validate the proof of concept has been carried out over several years by Dubois, Auroux, Capron and co-workers [23,[36][37][38][39][40][41][42]. As explained above, the ultimate goal in this reaction is to have a single reactor to minimize the capital cost (at least not higher than the propylene oxidation process).…”

Section: The New Route From Mixed Alcohols: Oxidative Coupling Of Alcmentioning

confidence: 99%

“…Ratio of strong basic to strong acidic sites obtained for fresh catalysts versus acrolein production determined by Lilic et al and Folliard et al[38][39][40][41][42].…”

mentioning

confidence: 98%

“…For the oxidative coupling of alcohols, where aldol condensation of formaldehyde and acetaldehyde is the consecutive step, influence of acid/base properties of catalysts has been studied by Lilic et al and Folliard et al [38][39][40][41][42]. In these experiments, the goal was to better understand the reaction mechanism, not to get the best results.…”

mentioning

confidence: 99%

“…In another study [42], the same team studied the influence of partial or total substitution of magnesium in spinel by transition metals (Co, Cu, Fe, Mn, Zn). In this case, the best catalytic activity was displayed by (0.8Mg; 0.2Mn)Al 2 O 4 with 31% acrolein yield (at 285 • C and GHSV 5000 h −1 ).…”

mentioning

confidence: 99%

“…Figure 3 displays the ratio of strong basic to strong acidic sites versus duration of reaction. [38][39][40][41][42], namely acrolein production (around 270 °C and 5000 h −1 ) versus the calculated ratio of number of strong basic to strong acidic sites, obtained over fresh catalysts. At a first glance, acid/base properties have a strong impact on the acrolein production over supported samples (green zone), and surface acid/base properties are easier to tune compared to bulk catalysts such as xMgO yAl2O3 spinels (grey zone) or hydrotalcites (blue zone).…”

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confidence: 99%

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Review on Alternative Route to Acrolein through Oxidative Coupling of Alcohols

2021

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Oxidative coupling of alcohols using methanol and ethanol, which can both be made renewable, is an attractive route to produce acrolein (propenaldehyde) in a single-step process. Currently acrolein is produced by direct oxidation of fossil propylene, and catalytic double dehydration of glycerol has been also investigated up to pilot scale. Although glycerol is an attractive feedstock, it suffers of several drawbacks. Addressing the limitations of both routes, the oxidative coupling of alcohols combines an exothermic oxidation and cross-aldolization. The best performing catalysts so far combine redox and acid/base sites. Reviewing the academic and patent literature, the present paper also addresses the economic analysis, to highlight the potential of this reaction at a yield from 70%, and at two different plant scales. The analysis has been made to guide further research, with the remaining technical problems to solve. Improved selectivity contributing to reduce the amount of equipment and the investment cost should be the prime target.

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Section: The New Route From Mixed Alcohols: Oxidative Coupling Of Alcmentioning

confidence: 99%

“…Ratio of strong basic to strong acidic sites obtained for fresh catalysts versus acrolein production determined by Lilic et al and Folliard et al[38][39][40][41][42].…”

mentioning

confidence: 98%

mentioning

confidence: 99%

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confidence: 99%

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confidence: 99%

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Review on Alternative Route to Acrolein through Oxidative Coupling of Alcohols

2021

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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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