Highly dispersed nickel loaded on mesoporous silica: One-spot synthesis strategy and high performance as catalysts for methane reforming with carbon dioxide

Ni/SiO2 catalyst prepared via Ni-aliphatic amine complexation for dry reforming of methane: Effect of carbon chain number and amine concentration

“…4(A), it was clear that with the increase of N c , the reduction temperature of Ni generally shifted to higher region. For NiSi, NiSi-EDAm and NiSi-HEAm, only one reduction peak between 400 • C and 600 • C was shown respectively which represented the reduction of the bulk NiO or the NiO weakly interacting with the silica surface [6,65]. When N c increased to 12, 15 and 18, the higher-temperature reduction peaks at around 600-750 • C appeared.…”

“…When N c increased to 12, 15 and 18, the higher-temperature reduction peaks at around 600-750 • C appeared. These peaks referred to the reduction of NiO in the silica framework or Ni silicate species [65,66], which meant a stable compound formed between Ni and silica. Also, if we compared the three samples with N c = 12, 15 and 18, the larger N c used, the higher reduction temperature of Ni shown, which meant a stronger MSI.…”

High performance of Mg–La mixed oxides supported Ni catalysts for dry reforming of methane: The effect of crystal structure

“…There are essentially two approaches to reduce carbon deposition of Ni-based catalysts: (1) Decrease the Ni catalyst particle size and improve its dispersion on support surfaces [6,7]; and (2) Tune the catalyst acidity by introducing a second oxide component [8,9]. Smaller Ni particle size and better nickel dispersion not only lead to more active sites on the catalyst surface, but also reduce the possibility of carbon deposition, as already demonstrated by many theoretical calculations and experimental results [10,11].…”

Effect of the order of Ni and Ce addition in SBA-15 on the activity in dry reforming of methane

“…It was also reported that both metal dispersion and metal-support interaction are improved in presence of CeO 2 [5,7]. Moreover, the recent use of organized mesoporous silica [8] and carbon [9,10] supports to disperse the Ni active phase appears promising.…”