Lehnert, Kerstin ; Claus, Peter (2008)
Influence of Pt particle size and support type on the aqueous-phase reforming of glycerol.
In: Catalysis Communications, 9 (15)
doi: 10.1016/j.catcom.2008.07.002
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
The catalytic conversion of glycerol to hydrogen by aqueous-phase reforming (APR) on several platinum based catalysts was studied. Catalysts prepared from a variety of metal precursors, such as platinum ethanolamine, platinum(II)-nitrate, platinum sulfite and tetrammine platinum(II)-nitrate showed similar activities (glycerol conversion 45%) and also identical selectivity (85%) towards hydrogen. The application of different pre-treatment conditions resulted in catalysts with metal particle sizes in a range of 1.6–3.2 nm. In the catalytic reaction selectivity to hydrogen increased with increasing particle size from 78% to 95% while the conversion of glycerol remained nearly constant at 20%. Also, variation of support material from pure γ-alumina to a mixture of γ-, δ- and θ-phases (Puralox®) led to an increase in hydrogen production from 1.2 × 10−3 to 7.6 × 10−3 mol min−1 View the MathML source. The use of crude glycerol as starting material was successful. However, due to impurities (e.g. NaCl) the rate of hydrogen production (7.6 × 10−3 mol min−1 View the MathML source) was lower than observed for pure glycerol (rmax = 3.3 × 10−3 mol min−1 View the MathML source) and decreased dramatically (1 × 10−3 mol min−1 View the MathML source) after about 4 h time on stream.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2008 |
| Autor(en): | Lehnert, Kerstin ; Claus, Peter |
| Art des Eintrags: | Bibliographie |
| Titel: | Influence of Pt particle size and support type on the aqueous-phase reforming of glycerol |
| Sprache: | Englisch |
| Publikationsjahr: | 20 September 2008 |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Catalysis Communications |
| Jahrgang/Volume einer Zeitschrift: | 9 |
| (Heft-)Nummer: | 15 |
| DOI: | 10.1016/j.catcom.2008.07.002 |
| URL / URN: | http://www.sciencedirect.com/science/article/B6W7K-4SYJS7G-2... |
| Kurzbeschreibung (Abstract): | The catalytic conversion of glycerol to hydrogen by aqueous-phase reforming (APR) on several platinum based catalysts was studied. Catalysts prepared from a variety of metal precursors, such as platinum ethanolamine, platinum(II)-nitrate, platinum sulfite and tetrammine platinum(II)-nitrate showed similar activities (glycerol conversion 45%) and also identical selectivity (85%) towards hydrogen. The application of different pre-treatment conditions resulted in catalysts with metal particle sizes in a range of 1.6–3.2 nm. In the catalytic reaction selectivity to hydrogen increased with increasing particle size from 78% to 95% while the conversion of glycerol remained nearly constant at 20%. Also, variation of support material from pure γ-alumina to a mixture of γ-, δ- and θ-phases (Puralox®) led to an increase in hydrogen production from 1.2 × 10−3 to 7.6 × 10−3 mol min−1 View the MathML source. The use of crude glycerol as starting material was successful. However, due to impurities (e.g. NaCl) the rate of hydrogen production (7.6 × 10−3 mol min−1 View the MathML source) was lower than observed for pure glycerol (rmax = 3.3 × 10−3 mol min−1 View the MathML source) and decreased dramatically (1 × 10−3 mol min−1 View the MathML source) after about 4 h time on stream. |
| Freie Schlagworte: | Aqueous-phase reforming; Glycerol; Hydrogen; Platinum catalyst |
| Zusätzliche Informationen: | Available online 11. Juli 2008 |
| Fachbereich(e)/-gebiet(e): | 07 Fachbereich Chemie 07 Fachbereich Chemie > Ernst-Berl-Institut > Fachgebiet Technische Chemie > Technische Chemie II 07 Fachbereich Chemie > Ernst-Berl-Institut > Fachgebiet Technische Chemie |
| Hinterlegungsdatum: | 20 Mär 2009 08:57 |
| Letzte Änderung: | 05 Mär 2013 09:18 |
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