Abstract:
Ni
2P/ZrO
2-SBA-15(n) and Ni
2P/ZrO
2-SBA-15(m) catalysts were prepared from
n-propoxide zirconium (n) and Zr(SO
4)
2(m) as zirconium sources. The catalysts were characterized by X-ray diffraction (XRD), N
2 adsorption specific surface area measurements (BET), CO uptake, X-ray photoelectron spectroscopy (XPS) and NH
3 temperature programmed desorption (NH
3-TPD). The results show that after Zr modification, a new layered structure of ZrP is formed. The introduction of Zr helps to generate more Ni
2P active phase with smaller crystal size, and increase both the acid strength and acid amount of the catalyst. Compared with zirconium
n-propoxide, the catalyst prepared from Zr(SO
4)
2 has larger specific surface area, more acid amount, stronger acidity, more ZrP phases, smaller Ni
2P crystal grains and more Ni active sites. The product yields of benzofuran hydrodeoxygenation (BF HDO) given by Ni
2P/ZrO
2-SBA-15(n) and Ni
2P/ZrO
2-SBA-15(m) were 71.5% and 85.9% respectively, which were increased by 14.0% and 28.4% respectively compared with Ni
2P/SBA-15. The BF HDO activity, selectivity and yield of the BF HDO products decreased in the order of Ni
2P/ZrO
2-SBA-15(m) > Ni
2P/ZrO
2-SBA-15(n) > Ni
2P/SBA-15.