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Ru on N‐doped Carbon for the Selective Hydrogenolysis of Sugars and Sugar Alcohols

Beine, Anna Katharina ; Ludovicy, Jil ; Chai, Jiachun ; Hofmann, Jan P. ; Glotzbach, Christoph ; Hausoul, Peter J. C. ; Palkovits, Regina (2022):
Ru on N‐doped Carbon for the Selective Hydrogenolysis of Sugars and Sugar Alcohols. (Publisher's Version)
In: ChemCatChem, 14 (11), Wiley-VCH, e-ISSN 1867-3899,
DOI: 10.26083/tuprints-00022448,

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Item Type: Article
Origin: Secondary publication DeepGreen
Status: Publisher's Version
Title: Ru on N‐doped Carbon for the Selective Hydrogenolysis of Sugars and Sugar Alcohols
Language: English

Glycols are accessible via metal‐catalyzed hydrogenolysis of sugar alcohols such as xylitol obtained from hemicellulose. Ru‐based catalysts are highly active but also catalyze side‐reactions such as decarbonylation and deoxygenation. To achieve high selectivity, these reactions need to be suppressed. In our study, we introduce heteroatom doped carbon materials as catalyst supports providing high selectivity. Heteroatom doping with nitrogen and oxygen was achieved by treating activated carbon with HNO₃, NH₃ and H₂ or carbonization of organic precursors. For all N‐doped materials a high glycol selectivity of ∼ 80 % for sorbitol and xylitol and 44 % for xylose and glucose was reached. XPS analysis confirms the presence of different nitrogen species at the carbon surface and varying ligand effects for oxygen and nitrogen. Oxygen has an electron withdrawing effect on ruthenium and leads to a decreased activity. Nitrogen has weaker electron withdrawing properties, resulting in an enhanced selectivity.

Journal or Publication Title: ChemCatChem
Volume of the journal: 14
Issue Number: 11
Place of Publication: Darmstadt
Publisher: Wiley-VCH
Collation: 8 Seiten
Uncontrolled Keywords: Activated Carbon, Glycols, Hydrogenolysis, N-doping, Ruthenium
Classification DDC: 600 Technik, Medizin, angewandte Wissenschaften > 660 Technische Chemie
Divisions: 11 Department of Materials and Earth Sciences > Material Science > Surface Science
Date Deposited: 10 Oct 2022 12:49
Last Modified: 17 Oct 2022 09:20
DOI: 10.26083/tuprints-00022448
Corresponding Links:
URN: urn:nbn:de:tuda-tuprints-224489
Additional Information:

This article also appears in: 55. Jahrestreffen Deutscher Katalytiker

SWORD Depositor: Deep Green
URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/22448
PPN: 500310491
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