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
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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