Journal
APPLIED CATALYSIS A-GENERAL
Volume 397, Issue 1-2, Pages 127-137Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apcata.2011.02.022
Keywords
Deoxygenation; NiMo-alumina; UV-vis; XRD; XPS; Ni species; Temperature pretreatment; Hydrotreating
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Funding
- Ministry of industry and Trade of the Czech Republic [FT-TA3/074]
- Ministry of Education, Youth and Sports [MSM0021627501]
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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. (C) 2011 Elsevier B.V. All rights reserved.
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