Journal
NANOSCALE
Volume 4, Issue 24, Pages 7698-7703Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c2nr31486j
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Funding
- National Basic Research Program of China (973 program) [2011CB710901]
- Natural Science Foundation of China [11002016, 81101123, 11272039]
- National Key Technology RD Program [2012BAI18B06, 2012BAI18B05]
- Fundamental Research Funds for the Central Universities of China
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The synthesis, characterization and catalytic capability of the NiW-nano-hydroxyapatite (NiW-nHA) composite were investigated in this paper. The NiW-nHA catalyst was prepared by a co-precipitation method. Then Fourier transform infrared (FT-IR) spectroscopy, transmission electron microscopy (TEM), X-ray diffraction (XRD) and energy dispersive spectroscopy (EDX) were used to analyze this material. In addition, the catalytic capacity of the NiW-nHA composite was also examined by FT-IR and gas chromatography (GC). The results of FT-IR analysis indicated that Ni, W and nHA combined closely. TEM observation revealed that this catalyst was needle shaped and the crystal retained a nanometer size. XRD data also suggested that a new phase of CaWO4 appeared and the lattice parameters of nHA changed in this system. nHA was the carrier of metals. The rates of Ni/W-loading were 73.24% and 65.99% according to the EDX data, respectively. Furthermore, the conversion of 91.88% Jatropha oil was achieved at 360 degrees C and 3 MPa h(-1) over NiW-nHA catalyst. The straight chain alkanes ranging from C-15 to C-18 were the main components in the production. The yield of C-15-C-18 alkanes was up to 83.56 wt%. The reaction pathway involved hydrocracking of the C=C bonds of these triglycerides from Jatropha oil. This paper developed a novel non-sulfided catalyst to obtain a green biofuel from vegetable oil.
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