Hydrogenation of citral over nitrogen-doped carbon nanofibre-supported nickel catalyst
| Autor: | Stanisław Gryglewicz, Joanna Ćwikła, Agata Śliwak, Grażyna Gryglewicz |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Chemistry
General Chemical Engineering Inorganic chemistry chemistry.chemical_element 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Citral 01 natural sciences Toluene 0104 chemical sciences Catalysis Solvent chemistry.chemical_compound Nickel Citronellal 0210 nano-technology Selectivity Carbon |
| Zdroj: | The Canadian Journal of Chemical Engineering. 94:1328-1335 |
| ISSN: | 0008-4034 |
| DOI: | 10.1002/cjce.22499 |
| Popis: | Herringbone carbon nanofibres (hCNFs) and nitrogen-doped carbon nanofibres with 0.115 g/g (11.5 %) of N (N-hCNFs) were used as the supports of nickel catalysts in the liquid phase hydrogenation of citral using toluene as a solvent. Over 96 % selectivity to citronellal was obtained at 150 °C for both catalysts. At the reaction temperature of 200 °C, reasonable amounts of isopulegol were formed additionally as a result of citronellal cyclization. The catalytic activity of Ni nanoparticles was significantly improved when supported on CNFs doped with nitrogen. The hydrogenation of cis-citral was remarkably favoured over the trans-citral isomer regardless of the reaction temperature. The hydrogenation of citronellal under the same process conditions was also studied. The sequential-parallel reactions network for the hydrogenation of citral under the applied conditions was proposed and the kinetic constants were evaluated, assuming pseudo-first order kinetics of the hydrogenation process. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Plný text