Lanthanoid-containing Ni-based catalysts for dry reforming of methane: A review

Modification Strategies of Ni-Based Catalysts with Metal Oxides for Dry Reforming of Methane

“…In recent years, reviews on the catalysts for the DRM reaction mainly focus on specific metal or support materials, such as Ni-based catalysts [34], transition metal catalysts [35], Ni/Al 2 O 3 catalysts [36], silica-based catalysts [37], Lanthanoid-containing Ni-based catalysts [38], metal carbides [39] and alloy catalysts [40]. Very few works are focused on the applications of metal oxides in Ni-based catalysts relating to the modification impacts on the size, morphology, surface, and interface properties that are based on the catalytic activities and anti-deactivation behaviors in the DRM reaction; therefore, this review summarizes the state-of-art developments of Ni-based catalysts regarding the modification strategies (support confinement, metal-support interaction, oxygen defects, and surface acidity/basicity) of metal oxides (basic oxides, rare earth metal oxides, transition metal oxides, and mixed oxides) on the activity, selectivity, stability, and deactivation resistance in the DRM reaction.…”

Direct Methanation of CO2 in Biogas with Hydrogen from Water Electrolysis: The Catalyst and System Efficiency

“…Significantly, the equilibrium conversion decreases with an increase in temperature due to the thermodynamics of methanation when the reaction temperature is lower than 500 °C. On the contrary, the equilibrium conversion of CO 2 increases when the reaction temperature exceeds 500 °C, which is due to the dry reforming of methane . However, as for the methanation reaction over the 2% Mg–1% Pt–Ni/SiO 2 catalyst, the lack of corresponding active sites could avoid the dry reforming of methane, which results in a continuous decrease in CO 2 conversion over 500 °C.…”

“…On the contrary, the equilibrium conversion of CO 2 increases when the reaction temperature exceeds 500 °C, which is due to the dry reforming of methane. 44 However, as for the methanation reaction over the 2% Mg−1% Pt−Ni/SiO 2 catalyst, the lack of corresponding active sites could avoid the dry reforming of methane, which results in a continuous decrease in CO 2 conversion over 500 °C. 3.3.…”

Ni/(R2O3,CaO) Nanocomposites Produced by the Exsolution of R1.5Ca0.5NiO4 Nickelates (R = Nd, Sm, Eu): Rare Earth Effect on the Catalytic Performance in the Dry Reforming and Partial Oxidation of Methane

“…Since the microstructures of all of the obtained materials were found to be similar, the difference in the catalytic DRM and POM performance can likely be attributed to the difference in their Ni/(R 2 O 3 ,CaO) compositions. The possible effects of various rare earth oxides on the catalytic activity in DRM and POM reactions were discussed in [ 23 , 24 , 25 ]. In most cases, the role of R 2 O 3 oxide in DRM reactions is usually associated with CO 2 capture and activation.…”

“…In the case of methane conversion, the application of oxides with an acidic surface in catalysis is not desirable, as it prevents the sorption of CO 2 in the course of the complex reaction of methane conversion at the surface of catalyst; it also promotes the intense coke formation during its exploitation. For these reasons it is recommended to use metal oxides with significant or strong basicity, like rare earth and/or alkaline earth oxides, in these catalysts [ 1 , 22 , 23 , 24 , 25 , 26 ]. In order to promote the redox processes at the surface of catalyst, the application of oxides with significant oxygen mobility in their lattice is also helpful.…”