Selective hydrodeoxygenation of tartaric acid to succinic acid

A novel one-step process for catalytic production of succinic acid from tartaric acid, which is largely available in the waste streams of wine making, is developed. A liquid-phase system comprised of a molybdenum oxide catalyst supported on carbon black (MoO x /BC) and hydrobromic acid in acetic aci...

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Veröffentlicht in:Catalysis science & technology 2017, Vol.7 (21), p.4944-4954
Hauptverfasser: Fu, Jiayi, Vasiliadou, Efterpi S., Goulas, Konstantinos A., Saha, Basudeb, Vlachos, Dionisios G.
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Sprache:eng
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Zusammenfassung:A novel one-step process for catalytic production of succinic acid from tartaric acid, which is largely available in the waste streams of wine making, is developed. A liquid-phase system comprised of a molybdenum oxide catalyst supported on carbon black (MoO x /BC) and hydrobromic acid in acetic acid under a H 2 atmosphere is effective for selective cleavage of the C–O bonds of tartaric acid and selective hydrogenation of the resulting unsaturated carbons. Temperature, hydrogen pressure, and catalyst pre-treatment are optimized to understand their impact on catalytic activity and product distribution, leading to an 87% yield of succinic acid at 170 °C. Importantly, reduction of the carboxyl groups and C–C bond cleavage are retarded. Pre-reduction and characterization studies (TPR, XRD, XPS, and XAS) reveal that the high catalyst activity of MoO x /BC is correlated with the lower Mo oxidation states (+4 to 0) formed during pre-reduction that promote cleavage of the C–O bonds of tartaric acid and hydrogenation of the CC bond of the intermediate fumaric acid. Recyclability studies and structural characterization of the recovered catalyst indicate that MoO x /BC remains active upon reuse.
ISSN:2044-4753
2044-4761
DOI:10.1039/C7CY01374D