Deactivation of Ni catalysts during methane autothermal reforming with CO2 and O2 in a fluidized-bed reactor

Characterization of CeO2 Promoter of a Nanocrystalline Ni/MgO Catalyst in Dry Reforming of Methane

“…Regardless of the reaction temperature, the range of H 2 /CO varied between 0.53 and 1.07 which was very close to the stoichiometric value for the actual reaction. A higher reaction temperature led to the increase of H 2 /CO which was attributed to the methane decomposition behavior at high temperature, thus leading to the enrichment of H 2 in the product [24]. It is known that the lower temperature peaks can be assigned to the reduction of the relatively free NiO species, while the higher temperature peaks can be attributed to the reduction of complex NiO x species, which strongly interact with the support [25].…”

Synthesis, characterization and catalytic performances of Ce-SBA-15 supported nickel catalysts for methane dry reforming to hydrogen and syngas

“…The main route for coke formation over Ni/Ce-SBA-15 (R) catalysts should be attributed to the catalytic cracking reaction over nickel particles as demonstrated by Hou et al in the pulsed-injection surface reaction of methane [51]. Nickelbased catalyst participated in catalytic cracking reaction to form coke precursor CH x .…”

“…Hou et al [51] have reported that the small-particle Ni catalyst was more active and stable than the large-particle Ni catalyst during methane autothermal reforming with CO 2 and O 2 . Tomishige et al [54] also found that carbon was deposited on large Ni particles and not on small Ni particles.…”

Characteristics of the Decomposition of CO2 in a Dielectric Packed-Bed Plasma Reactor

“…Among the methods for the reduction of CO 2 , the reforming of CO 2 and hydrocarbons has attracted great interests in the past decades because of the mitigation of greenhouse gases and better carbon resource recycling utilization [1]. Generally, reforming reactions of CO 2 and hydrocarbons are carried out by thermal catalysis, and the catalysts are usually supported metals, including supported noble metals and Ni-based catalysts [2][3][4][5]. However, dry reforming reactions require high temperatures to overcome the unfavorable thermodynamic equilibrium.…”