The dry reforming (DR) reaction is an eco-friendly process for producing synthesis gas (CO, H₂) from greenhouse gases (CH₄, CO₂). Despite advancements in various nickel (Ni)-supported catalysts for this reaction, achieving high catalyst stability against carbon deposition and improving conversion rates remain significant challenges. In this paper, we introduce a novel approach for synthesizing uniform Ni nanocatalysts with cesium (Cs) and cerium oxide (CeO_x). This synthesis is achieved using an automated device based on a co-melt infiltration technique. Our method addresses the limitations of conventional catalyst synthesis, such as complex procedures, low reproducibility, and difficulties in scaling up. The resulting catalysts contain uniformly small Ni particles, approximately 5 nm in size, with Cs and CeO_x evenly distributed throughout the alumina (Al₂O₃) support. The developed Ni/CeO_x-Al₂O₃ and Cs-Ni/CeO_x-Al₂O₃ nanocatalysts demonstrate improved conversion performance and stability under various DR conditions. This improvement is attributed to the synergistic effect of Cs and CeO_x, which creates a pathway to inhibit and remove carbon deposition. Additionally, these nanocatalysts exhibited superior resistance to carbon deposition compared to conventional Ni/Al₂O₃ and commercial Ni catalysts under identical reaction conditions.

Traditional iridium (Ir) oxide catalysts have faced significant limitations in water electrolysis, particularly under acidic conditions where instability and degradation severely restrict the efficiency of the oxygen evolution reaction (OER) and hydrogen evolution reaction (HER). To overcome these challenges, this study successfully synthesized highly dispersed IrPtPdNi alloy nanoparticles on a graphene oxide support using a vertically moving reactor, demonstrating exceptional performance in water electrolysis. These nanoparticles, synthesized via a fast-moving bed pyrolysis method, combine iridium, platinum, palladium, and nickel. They exhibit lower overpotentials in OER and comparable performance in HER to commercial catalysts, while also offering enhanced stability. These results surpass the limitations of traditional catalysts, marking significant progress toward more efficient and sustainable hydrogen production technologies. This advancement is expected to contribute significantly to the development of sustainable energy systems by innovatively enhancing the performance of catalysts in the electrochemical water-splitting process.

Iron-based nanoparticles with uniform and high particle dispersion, which are supported on carbon structures, have been used for various applications. However, their preparation still suffers from complicated synthesis involving multiple steps and from the high price of precursors and solvents. In the present work, a new carbon encapsulated iron-carbide nanoparticle supported on nitrogen-doped porous carbon (Fe₅C₂@C/NPC) structure was introduced. It was made using a simple solid-state reaction with sequential thermal treatments. Fe₅C₂@C/NPC is a highly active and stable catalyst for the high-temperature Fischer-Tropsch synthesis reaction. It showed very high hydrocarbon productivity (4.71 g_HC∙g_cat^-1∙h^-1) with high CO conversions (up to 96%).

A cobalt-silica hybrid nanocatalyst bearing small cobalt particles of diameter ~5 nm was prepared through a hydrothermal reaction and hydrogen reduction. The resulting material showed very high CO conversion (> 82%) and high hydrocarbon productivity (~1.0 g_HC·g_cat^-1·h^-1) with high activity (~8.5 × 10^-5 mol_CO·g_Co^-1·s^-1) in the Fischer-Tropsch synthesis reaction.