TY - JOUR
T1 - Comparison of phosphide catalysts prepared by temperature-programmed reduction and liquid-phase methods in the hydrodeoxygenation of 2-methylfuran
AU - Zhang, Jianwen
AU - Matsubara, Kazuki
AU - Yun, Gwang Nam
AU - Zheng, Huidong
AU - Takagaki, Atsushi
AU - Kikuchi, Ryuji
AU - Oyama, S. Ted
N1 - Funding Information:
This work was supported by a Grant-in-Aid for Scientific Research (B) (no. 26289301 ) of JSPS, Japan , and by student support (JZ) from Fuzhou Univ., China . STO received support from the National Science Foundation under grant CHE-1361842 and the US Department of Energy under grant DE-FG02-96ER14669 Appendix A
Publisher Copyright:
© 2017 Elsevier B.V.
PY - 2017/11/25
Y1 - 2017/11/25
N2 - Two types of Ni2P/SiO2 were prepared by different methods, a conventional method involving temperature-programmed reduction (TPR) and a liquid-phase synthesis (LP). Both methods resulted in phase-pure materials with the Ni2P hexagonal phase, but the sample prepared by TPR had lower particle size (7 nm) than the sample prepared by LP synthesis (25 nm). The samples were tested in the gas-phase hydrodeoxygenation of 2-methylfuran (2-MF) in H2 at 0.5 MPa and 250–450 °C, and it was found that the Ni2P/SiO2-TPR gave higher conversions and turnover frequencies than the Ni2P/SiO2-LP. It was conjectured that the difference in activity was due to the higher phosphorus content of the sample prepared by TPR, and this was confirmed by measurements of the P/Ni ratio by x-ray photoelectron spectroscopy. The main products formed by the two catalysts were 2-pentanone and n-pentane and small amounts of 1-pentanol and 2-pentanol. Contact time measurements on the Ni2P/SiO2-TPR sample indicated that 2-pentanone was a primary product, the pentanols were intermediary compounds, and the n-pentane was a final product. Kinetic measurements on the Ni2P/SiO2-LP revealed orders of 0.6 for the 2-MF and 0.5 for H2, consistent with adsorption of both reactants on the catalyst and a surface reaction between the adsorbed species. TPR was also employed to prepare a Cu3P/SiO2 sample. Although a phase-pure material was formed, the substance showed very low activity for the HDO of 2-MF.
AB - Two types of Ni2P/SiO2 were prepared by different methods, a conventional method involving temperature-programmed reduction (TPR) and a liquid-phase synthesis (LP). Both methods resulted in phase-pure materials with the Ni2P hexagonal phase, but the sample prepared by TPR had lower particle size (7 nm) than the sample prepared by LP synthesis (25 nm). The samples were tested in the gas-phase hydrodeoxygenation of 2-methylfuran (2-MF) in H2 at 0.5 MPa and 250–450 °C, and it was found that the Ni2P/SiO2-TPR gave higher conversions and turnover frequencies than the Ni2P/SiO2-LP. It was conjectured that the difference in activity was due to the higher phosphorus content of the sample prepared by TPR, and this was confirmed by measurements of the P/Ni ratio by x-ray photoelectron spectroscopy. The main products formed by the two catalysts were 2-pentanone and n-pentane and small amounts of 1-pentanol and 2-pentanol. Contact time measurements on the Ni2P/SiO2-TPR sample indicated that 2-pentanone was a primary product, the pentanols were intermediary compounds, and the n-pentane was a final product. Kinetic measurements on the Ni2P/SiO2-LP revealed orders of 0.6 for the 2-MF and 0.5 for H2, consistent with adsorption of both reactants on the catalyst and a surface reaction between the adsorbed species. TPR was also employed to prepare a Cu3P/SiO2 sample. Although a phase-pure material was formed, the substance showed very low activity for the HDO of 2-MF.
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U2 - 10.1016/j.apcata.2017.06.009
DO - 10.1016/j.apcata.2017.06.009
M3 - Article
AN - SCOPUS:85021217788
VL - 548
SP - 39
EP - 46
JO - Applied Catalysis A: General
JF - Applied Catalysis A: General
SN - 0926-860X
ER -