Journal
MATERIALS
Volume 7, Issue 3, Pages 2340-2355Publisher
MDPI AG
DOI: 10.3390/ma7032340
Keywords
methane; dry reforming; Ni; mesoporous silica; anchoring effect
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Funding
- National Natural Science Foundation [21173050, 21371035]
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A series of nickel-containing mesoporous silica samples (Ni-SiO2) with different nickel content (3.1%-13.2%) were synthesized by the evaporation-induced self-assembly method. Their catalytic activity was tested in carbon dioxide reforming of methane. The characterization results revealed that the catalysts, e.g., 6.7% Ni-SiO2, with highly dispersed small nickel particles, exhibited excellent catalytic activity and long-term stability. The metallic nickel particle size was significantly affected by the metal anchoring effect between metallic nickel particles and unreduced nickel ions in the silica matrix. A strong anchoring effect was suggested to account for the remaining of small Ni particle size and the improved catalytic performance.
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