TY - JOUR
T1 - Catalytic performance and characterization of Co-Fe bcc alloy nanoparticles prepared from hydrotalcite-like precursors in the steam gasification of biomass-derived tar
AU - Wang, Lei
AU - Chen, Jinhai
AU - Watanabe, Hideo
AU - Xu, Ya
AU - Tamura, Masazumi
AU - Nakagawa, Yoshinao
AU - Tomishige, Keiichi
N1 - Funding Information:
This work was supported by the Cabinet Office, Government of Japan through it's “Funding Program for Next Generation World-Leading Researchers”.
PY - 2014/11
Y1 - 2014/11
N2 - The Co-Fe/Mg/Al catalysts were prepared from the hydrotalcite-like compounds containing Co, Fe, Mg and Al, and applied to the steam gasification of biomass-derived tar. The characterization using TPR, TPO, XRD, H2 adsorption, TEM and EXAFS indicates that the Co-Fe/Mg/Al catalysts have a nanocomposite structure of the Co-Fe bcc alloy particles and the oxide particles of MgAl2O4-based solid solution after the reduction, where Co metal atoms can substitute partially Fe metal sites in bcc Fe metal regarding the Co-Fe bcc alloy particles. The composition of the Co-Fe/Mg/Al catalysts was optimized on the basis of the activity tests. The optimized Co-Fe/Mg/Al catalyst exhibited higher catalytic performance than the reported catalysts such as Co-Fe/α-Al2O3, Co/Mg/Al, Ni-Fe/Mg/Al in terms of activity and resistance to coke deposition. This behavior can be explained by the formation of the Co-Fe bcc alloy nanoparticles with rather uniform composition on MgAl2O4-based solid solution.
AB - The Co-Fe/Mg/Al catalysts were prepared from the hydrotalcite-like compounds containing Co, Fe, Mg and Al, and applied to the steam gasification of biomass-derived tar. The characterization using TPR, TPO, XRD, H2 adsorption, TEM and EXAFS indicates that the Co-Fe/Mg/Al catalysts have a nanocomposite structure of the Co-Fe bcc alloy particles and the oxide particles of MgAl2O4-based solid solution after the reduction, where Co metal atoms can substitute partially Fe metal sites in bcc Fe metal regarding the Co-Fe bcc alloy particles. The composition of the Co-Fe/Mg/Al catalysts was optimized on the basis of the activity tests. The optimized Co-Fe/Mg/Al catalyst exhibited higher catalytic performance than the reported catalysts such as Co-Fe/α-Al2O3, Co/Mg/Al, Ni-Fe/Mg/Al in terms of activity and resistance to coke deposition. This behavior can be explained by the formation of the Co-Fe bcc alloy nanoparticles with rather uniform composition on MgAl2O4-based solid solution.
KW - Biomass
KW - Co-Fe alloy
KW - Hydrotalcite
KW - Steam gasification
KW - Tar
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U2 - 10.1016/j.apcatb.2014.06.021
DO - 10.1016/j.apcatb.2014.06.021
M3 - Article
AN - SCOPUS:84903788742
VL - 160-161
SP - 701
EP - 715
JO - Applied Catalysis B: Environmental
JF - Applied Catalysis B: Environmental
SN - 0926-3373
IS - 1
ER -