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A novel sequential treatment method (hydrogen treatment prior to air calcination) was used to prepare Ni/SiO2 catalysts by incipient wetness impregnation (IWI). This catalyst showed a uniform and small Ni particle size (d=2.5±0.8nm) and a strong metal-support interaction (TR≈670°C), yielding an excellent catalytic performance (85% for CO2 conversion and 80% for CH4 conversion) with negligible metal...
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