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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.
In: ChemCatChem, 2022, 14 (11)
doi: 10.26083/tuprints-00022448
Artikel, Zweitveröffentlichung, Verlagsversion

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Kurzbeschreibung (Abstract)

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.

Typ des Eintrags: Artikel
Erschienen: 2022
Autor(en): Beine, Anna Katharina ; Ludovicy, Jil ; Chai, Jiachun ; Hofmann, Jan P. ; Glotzbach, Christoph ; Hausoul, Peter J. C. ; Palkovits, Regina
Art des Eintrags: Zweitveröffentlichung
Titel: Ru on N‐doped Carbon for the Selective Hydrogenolysis of Sugars and Sugar Alcohols
Sprache: Englisch
Publikationsjahr: 2022
Ort: Darmstadt
Publikationsdatum der Erstveröffentlichung: 2022
Verlag: Wiley-VCH
Titel der Zeitschrift, Zeitung oder Schriftenreihe: ChemCatChem
Jahrgang/Volume einer Zeitschrift: 14
(Heft-)Nummer: 11
Kollation: 8 Seiten
DOI: 10.26083/tuprints-00022448
URL / URN: https://tuprints.ulb.tu-darmstadt.de/22448
Zugehörige Links:
Herkunft: Zweitveröffentlichung DeepGreen
Kurzbeschreibung (Abstract):

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.

Freie Schlagworte: Activated Carbon, Glycols, Hydrogenolysis, N-doping, Ruthenium
Status: Verlagsversion
URN: urn:nbn:de:tuda-tuprints-224489
Zusätzliche Informationen:

This article also appears in: 55. Jahrestreffen Deutscher Katalytiker

Sachgruppe der Dewey Dezimalklassifikatin (DDC): 600 Technik, Medizin, angewandte Wissenschaften > 660 Technische Chemie
Fachbereich(e)/-gebiet(e): 11 Fachbereich Material- und Geowissenschaften
11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft
11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Oberflächenforschung
Hinterlegungsdatum: 10 Okt 2022 12:49
Letzte Änderung: 11 Okt 2022 05:18
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