Improving the Hydrogenation Performance of Nano-Catalysts by Constructing a Cavity-Constrained Fluidized System.

Nano-catalysts demonstrate exceptional performance in heterogeneous reactions, yet their potential is often underutilized due to a lack of attention to engineering design. In this study, an innovative encapsulated structure is presented for nano-catalysts and a corresponding catalytic system. Using an oil-in-water droplet strategy, millimeter-sized hollow spherical alumina (AlO-HS) is fabricated with an average diameter of ≈3 mm and a hollow void size of ≈1 mm.

Preparation of High-Strength and Excellent Compatibility Fluorine/Silicone Rubber Composites under the Synergistic Effect of Fillers.

Fluorine/silicone composite rubber is widely used as a sealing material in aerospace, missile, automotive, petroleum, and other industries, but the traditional process does not use synergistic fillers to strengthen the composite system. In this research, fumed SiO and black caron (N990) were used as synergistic fillers, fluorine/silicone composite rubber was prepared by mechanical mixing process, and three different fluorine rubber systems were used to find the best composite material. The mechanical properties, thermal properties, aging properties, moderate strength properties, and microstructure of the composites were evaluated.