Application of fluorine-modified Ni-Mg-Al hydrotalcite catalyst in the partial oxidation of methane to syngas

ZHANG Jun; WANG Xiu-zhi; ZHAONing; XIAO Fu-kui; WEI Wei; SUN Yu-han

Volume 40 Issue 04

Apr. 2012

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Article Navigation > Journal of Fuel Chemistry and Technology > 2012 > (04): 424-429

ZHANG Jun, WANG Xiu-zhi, ZHAONing, XIAO Fu-kui, WEI Wei, SUN Yu-han. Application of fluorine-modified Ni-Mg-Al hydrotalcite catalyst in the partial oxidation of methane to syngas[J]. Journal of Fuel Chemistry and Technology, 2012, (04): 424-429.

Citation:

ZHANG Jun, WANG Xiu-zhi, ZHAONing, XIAO Fu-kui, WEI Wei, SUN Yu-han. Application of fluorine-modified Ni-Mg-Al hydrotalcite catalyst in the partial oxidation of methane to syngas[J]. Journal of Fuel Chemistry and Technology, 2012, (04): 424-429.

Citation:

ZHANG Jun, WANG Xiu-zhi, ZHAONing, XIAO Fu-kui, WEI Wei, SUN Yu-han. Application of fluorine-modified Ni-Mg-Al hydrotalcite catalyst in the partial oxidation of methane to syngas[J]. Journal of Fuel Chemistry and Technology, 2012, (04): 424-429.

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Application of fluorine-modified Ni-Mg-Al hydrotalcite catalyst in the partial oxidation of methane to syngas

1.
State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China;
2.
Low Carbon Energy Conversion Center, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201203, China

Received Date: 2011-05-11
Rev Recd Date: 2011-08-03
Publish Date: 2012-04-30

Abstract

Abstract

Fluorine-modified Ni-Mg-Al mixed oxides (Ni/Mg/Al/O-F) prepared from thermal decomposition of hydrotalcite-type (HT) precursor was characterized by XRD, SEM, CO₂-TPD, H₂-TPR, and N₂ sorption and used as catalyst in partial oxidation of methane (POM) to syngas. The results indicated that Ni/Mg/Al/O-F catalyst after calcination takes the mesoporous structure of periclase. Compared with the non-modified Ni-Mg-Al mixed oxides (Ni/Mg/Al/O), Ni/Mg/Al/O-F exhibits lower surface area, lower crystallinity and smaller particle size, but higher basicity of moderate and strong intensity. Ni/Mg/Al/O-F exhibits high activity and stability in POM; the activity at 1053K retains without deactivation even after 120h on stream. The presence of the F-anions can enhance the dispersion of active nickel species and their resistance to coking, which may contribute to the high performance of Ni/Mg/Al/O-F catalyst.
- hydrotalcite,
- partial oxidation of methane,
- fluorine modification,
- Ni-Mg-Al mixed oxides

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References(26)

References

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