Application of silica in the field of drug carriers and catalysis
Hits: 989
img
Nano-silica is physiologically inert and highly absorbent, and is often used as a carrier in the preparation of fungicides. When nano silica is used as a carrier (UG-S07AG), it can absorb antibacterial ions to achieve antibacterial purposes. It can be used in the manufacture of refrigerator shells and computer keyboards. Nano-silica has large specific surface area, high porosity and many surface active centers, and has potential application value in catalysts and catalyst supports. Using nano-silica as the basic raw material and adopting sol-gel technology, composite oxides containing nano-silica can be prepared. When this composite oxide is used as a catalyst support, it will show unique reaction performance for many structurally sensitive reactions. The catalytic activity of the reaction is high, the selectivity is good, and the catalytic activity can be maintained for a long time during the reaction
First of all, silica is the main component of quartz ceramics. Secondly, as an additive, it can also effectively enhance the performance of ceramics. For example, using silica instead of nano Al2O3 to add to 95 porcelain, it can not only play the role of nano particles, but also the second phase particles, not only improve the strength and toughness of the ceramic material, but also increase the hardness and hardness of the material. The elastic modulus and other properties are more ideal than adding Al2O3.
The use of silica to composite the ceramic substrate not only improves the compactness, toughness and smoothness of the substrate, but also greatly reduces the sintering temperature. In addition, the application effect of silica in ceramic products such as ceramic filters and corundum balls is also very significant.