The role of Ni species in the deoxygenation of rapeseed oil over NiMo-alumina catalysts

0359046 - ÚFCH JH 2012 RIV NL eng J - Journal Article
Priecel, P. - Kubička, D. - Čapek, L. - Bastl, Zdeněk - Ryšánek, P.
The role of Ni species in the deoxygenation of rapeseed oil over NiMo-alumina catalysts.
Applied Catalysis A - General. Roč. 397, 1-2 (2011), s. 127-137. ISSN 0926-860X. E-ISSN 1873-3875
Institutional research plan: CEZ:AV0Z40400503
Keywords : deoxygenation * NiMo-alumina * UV-vis
Subject RIV: CF - Physical ; Theoretical Chemistry
Impact factor: 3.903, year: 2011

The deoxygenation of rapeseed oil has been studied over sulfided NiMo-alumina catalysts (NiMoS-alumina). The main focus has been on the preparation of catalyst precursors (oxide form of sulfided NiMo-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.
Permanent Link: http://hdl.handle.net/11104/0006421