Characteristics of Sr1−xYxTi1−yRuyO3+/−δ and Ru-impregnated Sr1−xYxTiO3+/−δ perovskite catalysts as SOFC anode for methane dry reforming

A Ce/Ru Codoped SrFeO3−δ Perovskite for a Coke-Resistant Anode of a Symmetrical Solid Oxide Fuel Cell

“…According to previous research, the carbon deposition on a Ni-based anode under dry hydrocarbon fuel at 800 °C could be ascribed to the direct pyrolysis because the carbon monoxide disproportionation would be suppressed, , but the deposition of oxides of alkaline earth was found to be beneficial to water-mediated oxidation of hydrocarbon. , The anticoking behavior was found to be governed by the water affinity on the alkaline metal oxides adjacent to the metal particles in a SOFC anode. In addition, the addition of Ru 0 in the Ni-YSZ electrode was found to enhance the electrochemical and thermochemical reaction for better coke resistance under a carbonaceous fuel , and the decrease in the coverage of −CO on the surface induced by Ru 0 deposition could be the reason . Moreover, SrO in the Ce20SFR lattice is beneficial to the transport of CO 2 from CeO 2 , Ru 0 , or perovskite to produce SrCO 3 to increase the coke resistance of the electrode similar to CaO in the La 0.6 Ca 0.4 Fe 0.8 Ni 0.2 O 3−δ electrode …”

“…The anti-coking behavior was found to be governed by the water affinity on the alkaline metal oxides adjacent to the metal particles 72 in a SOFC anode. In addition, the addition of Ru 0 in the Ni-YSZ electrode was found to enhance the electrochemical and thermochemical reaction for better coke resistance under a carbonaceous fuel 73,74 and the decrease in the coverage of -CO on the surface induced by Ru 0 deposition could be the reason 75 .…”

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

“…In addition to the transition metals, the doping of Ru produced the perovskite structure Sr 0.92 Y 0.08 Ti 0.98 Ru 0.02 O 3+/−δ . Since the p-band of oxygen shifted to the Fermi level, the formed Ru-O bond was weaker than the Ti-O bond, reducing the formation energy of oxygen defects and increasing the surface oxygen concentration [86].…”

Synergistically Promoting Coking Resistance of a La0.4Sr0.4Ti0.85Ni0.15O3−δ Anode by Ru-Doping-Induced Active Twin Defects and Highly Dispersed Ni Nanoparticles

“…To research the chemical stability of materials, the H 2 -TPR plot between 50 and 900 °C is recorded in Figure b. According to other literature reports, there are many factors that will affect the position of the reduction peaks, such as oxygen vacancies, grain size, bonding strength, transition metal state, etc . From the H 2 -TPR curves, L0.6STN shows one reduction peak in the range of 600–700 °C; considering that La 3+ and Sr 2+ are not easy to be reduced below 1300 °C and R-L0.6STN has no reduction of Ni, the peak at 600–700 °C can be attributed to the reduction of Ti 4+ to Ti 3+ .…”