NDLI: Synthesis of Nickel Phosphide Nanorods as Catalyst for the Hydrotreating of Methyl Oleate

Content Provider	Springer Nature Link
Author	Yang, Yongxing Ochoa Hernández, Cristina Pizarro, Patricia Peña O’Shea, Víctor A. Coronado, Juan M. Serra, David P.
Copyright Year	2012
Abstract	Arrays of nickel phosphide nanorods were successfully synthesized by nanocasting using mesostructured silica SBA-15 as a hard template (HT-Ni$_{2}$P). After temperature-programmed reduction of the phosphate precursor infiltrated within the pore walls of SBA-15, the unsupported material was obtained by removing the silica matrix with diluted HF. The pore channel of the SBA-15 template stabilizes the Ni$_{2}$P particles, preventing sintering after the high reduction temperature and shaping their elongated morphology. Moreover, HT-Ni$_{2}$P catalyst shows an improvement in the textural properties with a significantly higher surface area than the reference sample synthesized in the absence of template. X-ray diffraction revealed that the only crystalline phase present in this material was Ni$_{2}$P. On the other hand, transmission electron microscopy shows that the catalyst is mainly constituted by agglomerates of nanorods. Through EDX microanalysis the efficient removal of silicon was confirmed. Under hydrotreating conditions, nanorods of Ni$_{2}$P show a fourfold enhancement in the conversion of methyl oleate with respect to conventional Ni$_{2}$P synthesized in absence of hard template. Nevertheless, when these data are normalized to surface area, the specific activity of HT-Ni$_{2}$P nanorods is significantly lower than that of the conventionally prepared sample. Differences in selectivity were also observed as Ni$_{2}$P nanorods favored the decarboxylation reaction leading to a higher yield of n-heptadecane.
Starting Page	991
Ending Page	998
Page Count	8
File Format	PDF
ISSN	10225528
Journal	Topics in Catalysis
Volume Number	55
Issue Number	14-15
e-ISSN	15729028
Language	English
Publisher	Springer US
Publisher Date	2012-09-05
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Nickel phosphide Nanorods Nanocasting Mesoporous Hydrodeoxygenation Vegetable oil Green diesel Pharmacy Catalysis Industrial Chemistry/Chemical Engineering Characterization and Evaluation of Materials Physical Chemistry
Content Type	Text
Resource Type	Article
Subject	Chemistry Catalysis

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