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The role of Ni species in the deoxygenation of rapeseed oil over NiMo-alumina catalysts
Applied Catalysis A: General; Vol 397; 2011; Pages 127-137
- Category: Článek v odborném periodiku (Article in a professional journal)
- Author: Bastl Zdeněk, Čapek Libor, Kubička David, Priecel Peter, Ryšánek Petr
- ISSN: 0926-860X
- Year: 2011
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Link:
URL
- DOI: 10.1016/j.apcata.2011.02.022
Review
The deoxygenation of rapeseed oil has been studied over sulfidedNiMo-alumina catalysts (NiMoS-alumina). The main focus has been on the preparation of catalyst precursors (oxide form of sulfidedNiMo-alumina catalysts – NiMoO-alumina) with a different distribution of Ni species in order to contribute to the understanding of the effect of catalyst preparation on the activity/selectivity of NiMoS-alumina catalysts in the deoxygenation of rapeseed oil. To analyze the state of Ni species the NiMoO-alumina catalysts have been characterized by UV–vis diffuse reflectance spectrometry (DRS), X-ray diffraction (XRD) and XPS. It has been found out that the NiMoO-alumina catalysts with higher population of octahedral nickel species resulted in more active NiMoS-alumina catalysts than those containing higher population of tetrahedral nickel species.