The activity of reducible metal oxide Sm2O3, CeO2, and ZnO as Ni nanoparticles support was investigated for CO2 methanation reaction. carried out between 200 °C to 450 with the optimum catalytic observed at °C. reducibility catalysts has been comparatively studied using H2-Temperature Reduction Temperature (TPR) method. H2-TPR analysis also elucidated formation surface oxygen vacancies temperat...

Design of supportive atomic sites with a controllably adjusted coordinating environment is essential to advancing the reduction CO2 value-added fuels and chemicals achieving carbon neutralization. Herein, Ni (Zn) that are uniquely coordinated ternary Zn (Ni)/N/O ligands were successfully decorated on formamide-derived porous nanomaterials, possibly forming an structure Ni(N2O1)-Zn(N2O1), as stu...

High-density fine-grained Ni0.5Zn0.5Fe2O4 ferrite ceramics were synthesized by spark plasma sintering (SPS) in conjunction with high energy ball milling. The precursor powders were milled for 20 h, 40 h, and 60 h, respectively, and the milled powders were all sintered for 5 min at 900 ̊C. All the samples exhibit a single spinel phase. With increasing of the ball milling time, the relative densit...

Maximizing the efficiency and power density of dc-dc converters demands parallel optimizations in design control, especially for variable-frequency operating over wide frequency ranges. This letter presents full-scale optimization a kilowatt-range megahertz-class boost converter based on impulse rectification. To maximize heat extraction from increase its density, entire stage is implemented si...