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

Paper ID Volume ID Publish Year Pages File Format Full-Text
41713 45897 2011 11 PDF Available
Title
The role of Ni species in the deoxygenation of rapeseed oil over NiMo-alumina catalysts
Abstract

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.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (157 K)Download as PowerPoint slideHighlights► NiMo-alumina catalysts were prepared with different distribution of Ni species. ► NiMo-alumina catalysts were tested in the deoxygenation of rapeseed oil. ► Conversion increased with increasing Ni(Oh):Ni(Td) population ratio. ► C18/C17 selectivities ratio increased with decreasing Ni(Oh):Ni(Td) population ratio.

Keywords
Deoxygenation; NiMo-alumina; UV–vis; XRD; XPS; Ni species; Temperature pretreatment; Hydrotreating
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The role of Ni species in the deoxygenation of rapeseed oil over NiMo-alumina catalysts
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 397, Issues 1–2, 30 April 2011, Pages 127–137
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us