Simultaneous Coproduction of Xylonic Acid and Xylitol: Leveraging In Situ Hydrogen Generation and Utilization from Xylose.

Autor: Awad A; Green Carbon Research Center, Korea Research Institute of Chemical Technology, Daejeon, 34114, Republic of Korea.; Department of Advanced Materials and Chemical Engineering, University of Science and Technology, Daejeon, 34113, Republic of Korea., Valekar AH; Green Carbon Research Center, Korea Research Institute of Chemical Technology, Daejeon, 34114, Republic of Korea., Oh KR; Green Carbon Research Center, Korea Research Institute of Chemical Technology, Daejeon, 34114, Republic of Korea., Prihatno F; Department of Chemistry, University of Ulsan, Ulsan, 44776, Republic of Korea., Jung J; Department of Chemistry, University of Ulsan, Ulsan, 44776, Republic of Korea., Nimbalkar AS; Green Carbon Research Center, Korea Research Institute of Chemical Technology, Daejeon, 34114, Republic of Korea.; Department of Advanced Materials and Chemical Engineering, University of Science and Technology, Daejeon, 34113, Republic of Korea., Upare PP; Activon Ltd., Ochang-eup, Cheongwon-gu, Cheongju, Chungcheongbuk-do, 28104, Republic of Korea., Hoon Kim J; Chemical Process Solution Research Center, Korea Research Institute of Chemical Technology, Daejeon, 34114, Republic of Korea., Kyu Hwang Y; Green Carbon Research Center, Korea Research Institute of Chemical Technology, Daejeon, 34114, Republic of Korea.; Department of Advanced Materials and Chemical Engineering, University of Science and Technology, Daejeon, 34113, Republic of Korea.
Jazyk: angličtina
Zdroj: ChemSusChem [ChemSusChem] 2024 Dec 27, pp. e202401651. Date of Electronic Publication: 2024 Dec 27.
DOI: 10.1002/cssc.202401651
Abstrakt: Pentose oxidation and reduction, processes yielding value-added sugar-derived acids and alcohols, typically involve separate procedures necessitating distinct reaction conditions. In this study, a novel one-pot reaction for the concurrent production of xylonic acid and xylitol from xylose is proposed. This reaction was executed at ambient temperature in the presence of a base, eliminating the need for external gases, by leveraging Pt-supported catalysts. Initial experiments using commercially available metal-supported carbon catalysts validated the superior activity of Pt. However, a notable decline in recycling performance was observed in Pt/C, which is attributed to the sintering of Pt nanoparticles. In contrast, the synthesized Pt-supported ZrO 2 catalysts exhibited enhanced recycling performance because of the strong metal-support interaction between Pt and the ZrO 2 support. Furthermore, mechanistic insights and density functional theory calculations show that product desorption involves a significantly higher energy barrier compared to substrate adsorption and hydrogenation, highlighting an efficient transfer hydrogenation mechanism leading to equivalent yields of both xylonic acid and xylitol. This study introduces a promising approach for the simultaneous production of sugar-derived acids and alcohols, with implications for sustainable catalysis and process optimization.
(© 2024 The Authors. ChemSusChem published by Wiley-VCH GmbH.)
Databáze: MEDLINE
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