https://doi.org/10.1016/j.cej.2022.135394 “The in-situ DRIFTS study was used to investigate the interaction between highly dispersed Ni clusters and oxygen vacancies over Ni/CeO2 sub-nanometer catalysts. After introducing CO2 (1st stage
https://doi.org/10.1016/j.cej.2022.135394 “The cyclic stability, in particular at elevated temperatures, is crucial for the industrial application of sub-nanometer catalysts in the ICCU process. Fig. 4c and d,
https://doi.org/10.1016/j.cej.2022.135394 ” The ICCU performance of the physical mixture of CaO and sub-nanometer Ni cluster supported on ceria nanorods were evaluated at 550 °C and
https://doi.org/10.1016/j.cej.2022.135394 ” X-ray absorption spectroscopy (XAS) at Ni K-edge (8.3 keV) were recorded at the B18 beamline of the Diamond Light Source, UK, using Si (1 1 1)
https://doi.org/10.1016/j.cej.2022.135394 “A standard sol–gel process proposed by Santos et al. was used to synthesize a CaO adsorbent [34]. A predetermined amounts of calcium nitrate tetrahydrate (Ca(NO3)2·4H2O)
https://doi.org/10.1016/j.cej.2022.135394 “A hydrothermal process, as previously reported, was used to synthesize CeO2 nanorods [33]. Typically, 1.730 g cerium nitrate hexahydrate (Ce(NO3)3·6H2O) and 20.0 g of sodium hydroxide (NaOH) were dissolved in 10 mL and
https://doi.org/10.1016/j.cej.2022.135394 “Among various metal oxides, e.g. Al2O3, SiO2, and TiO2, used as supports in methanation catalysis, CeO2 has drawn intensive attention due to its basic nature, high stability, and capacity
https://doi.org/10.1016/j.fuel.2022.123842 “The developed DFM should also selectively capture CO2 from O2-containing flue gas at relatively high temperatures and then, hydrogenate the adsorbed species to methane with H2. With
https://doi.org/10.1016/j.fuel.2022.123842 “Fig. 9 shows the evolution of CH4 and CO productions with the number of CO2 adsorption/hydrogenation cycles for 30% LaNiO3/CeO2-derived sample at 520 °C. As can be observed,
https://doi.org/10.1016/j.fuel.2022.123842 “To better understand the differences in the catalytic behaviour, Fig. 8 plots CH4 concentration profiles during complete CO2 adsorption and hydrogenation cycles at 280, 400 and 520 °C for
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