Study on structure regulation of Ni-based composite oxides by doping metal ions and their application in catalyzing partial oxidation of methane reaction
|更新时间:2025-02-27
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Study on structure regulation of Ni-based composite oxides by doping metal ions and their application in catalyzing partial oxidation of methane reaction
Low-carbon Chemistry and Chemical EngineeringVol. 50, Issue 2, Pages: 25-30(2025)
SHU Dongbo,CHEN Haijie,WANG Xiaobin,et al.Study on structure regulation of Ni-based composite oxides by doping metal ions and their application in catalyzing partial oxidation of methane reaction[J].Low-carbon Chemistry and Chemical Engineering,2025,50(02):25-30.
SHU Dongbo,CHEN Haijie,WANG Xiaobin,et al.Study on structure regulation of Ni-based composite oxides by doping metal ions and their application in catalyzing partial oxidation of methane reaction[J].Low-carbon Chemistry and Chemical Engineering,2025,50(02):25-30. DOI: 10.12434/j.issn.2097-2547.20240168.
Study on structure regulation of Ni-based composite oxides by doping metal ions and their application in catalyzing partial oxidation of methane reaction
Doping metal ions can regulate the coordination environment and construct structural defect sites of active metals in the composite metal oxides
and then improve the catalytic performances of composite metal oxides as catalysts. Ni-based composite oxide catalysts by doping Zn
Ce or Fe were prepared by sol-gel method and used in catalyzing partial oxidation of methane (POM) reaction. The crystal structures
structure properties
reduction performances and species chemical states of catalysts were characterized by XRD
N
2
physical adsorption/desorption
H
2
-TPR and XPS and so on. The results show that doping metal ions effectively regulates the distribution of Ni and reactive oxygen species. Among them
doping Ce in Ni
0.76
Ce
0.24
Cr
2
catalyst enhances the interaction force between Ni and other metals
increases the number of reactive oxygen species on the catalyst surface. The H
2
selectivity achieves nearly 100% at the high temperature stage (550 ℃ to 600 ℃).
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references
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