Abstract
Ru-modified MCM-41 mesoporous molecular sieve and Y zeolite catalysts were synthesised and characterised using XRD, electrochemical voltammetry, ESCA (XPS), nitrogen adsorption and H2-TPD. Selective liquid-phase hydrogenation of cinnamaldehyde to cinnamyl alcohol was investigated over these catalysts and compared to hydrogenation on a commercial Ru/C catalyst. The effect of support (MCM-41, Y and C), solvent (cyclohexane, hexane and 2-propanol) and catalyst pre-treatment (calcination) on the conversion of cinnamaldehyde and selectivity to cinnamyl alcohol was studied. The zeolite structure, pore size, acidity, catalyst pre-treatment as well as the solvent influenced the activity and selectivity. Non-calcined Ru/Y exhibited the highest selectivity to cinnamyl alcohol. The activity of Ru/Y was highest with 2-propanol as a solvent.
| Original language | English |
|---|---|
| Pages (from-to) | 385-396 |
| Number of pages | 12 |
| Journal | Applied Catalysis A: General |
| Volume | 251 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 30 Sept 2003 |
| MoE publication type | A1 Journal article-refereed |
Funding
This work is part of the activities at the Åbo Akademi Process Chemistry Group within the Finnish Centre of Excellence Programme (2000–2005). The post-doctoral fellowship for N. Kumar from the Academy of Finland is gratefully acknowledged. The authors also acknowledge the support given by the Czech Grant Agency (Grant No. 104/03/0409) and Graduate School of Chemical Engineering.
Keywords
- Cinnamaldehyde
- Cinnamyl alcohol
- Hydrogenation
- Mesoporous molecular sieve
- Ruthenium
- Zeolites
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