Fig. 7From: One-Step Solvothermal Synthesis of Ni Nanoparticle Catalysts Embedded in ZrO2 Porous Spheres to Suppress Carbon Deposition in Low-Temperature Dry Reforming of MethaneSEM and TEM images of spent Ni catalysts embedded in small ZrO2-based supports, a S-Ni@ZrO2, b S-Ni@SiO2-ZrO2, c S-Ni@MgO-ZrO2, d S-Ni@Y2O3-ZrO2, and e U-Ni/ZrO2Back to article page