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What is the role of aerogels in the management of smog?
2018-09-27 15:56:06       From: Tradematt-Aerogel

 What is the role of aerogels in the management of smog?

Aerogel is a new type of material with nanoporous network structure. Its porosity is 80-99.8%, the pore size is generally between 1~100nm, and the density varies from 0.12 to 600kg/m3. It is in thermal and optical. , electrical, chemical, mechanical and other aspects have shown magical characteristics. So how does aerogel material relate to anti-caries?

First, aerogels are currently the best super insulation materials. The thermal conductivity of aerogel at room temperature can reach 0.013w/m·k, the thermal insulation performance is twice that of still air, the thermal insulation material of traditional glass wool is 4 times, and the ordinary concrete is 100 times. When aerogel is used in thermal insulation projects of thermal power generation, petrochemical equipment, and pipelines, the thickness of thermal insulation material is only one quarter of that of traditional thermal insulation materials, the amount of thermal insulation material is greatly reduced, and the heat dissipation area of ​​the outer surface of thermal insulation material is greatly increased. Reduced, it can play a significant 30 to 50% energy saving compared to traditional materials.

In this way, the utilization rate of energy will be significantly improved, and the consumption of coal combustion can be reduced, thereby reducing the emission of PM2.5 caused by coal combustion. This is obvious for reducing the smog in the northwest, north China, and the northern regions where the central heating needs to be concentrated. The energy-saving effect in high-energy industries such as steel metallurgy and cement ceramics is naturally very significant.

When the aerogel material is applied to the insulation of high-speed trains, ships, automobiles and other vehicles, it can not only significantly reduce the space occupation, but also significantly reduce the energy consumption costs of air conditioners, and indirectly contribute to reducing PM2.5 emissions. When the aerogel material is applied to building insulation, it can even realize a “passive house” that does not require air conditioning, and is warm in winter and cool in summer. The energy consumption is almost zero. For a long time, building energy consumption has accounted for about 30% of total energy consumption.

Secondly, aerogels are also catalytic materials with great application prospects. Another major cause of domestic haze is automobile exhaust. The degree of damage of exhaust gas mainly depends on the oil burned in the engine and the exhaust gas catalytic device. Catalytic cracking and catalytic reforming are the most important core links in the refining process of gasoline. The aerogel material has a nanoporous structure and an adjustable pore size, and the specific surface area can be as high as 1000~2000 m2/g. At the same time, different components such as silica, alumina, zirconia, vanadium oxide and carbon can be selected to refine the high-quality gasoline. And the field of automobile exhaust treatment has a very huge application prospect.

Once again, the future of aerogels may be a huge application in the field of energy storage. At present, carbon aerogels and graphene aerogels are becoming research hotspots in aerogels in the fields of supercapacitors and lithium ion battery electrodes. Once they are industrialized, they will promote the development of new energy in China. In addition, the current insulation of batteries for new energy vehicles also uses a large amount of aerogel materials.

Sky blue, green land, water clear, people and harmony, this is the common aspiration of all of us. Under the dome, can aerogel become a blast-resistant blue blade? Our new materials practitioners, especially aerogel materials practitioners, are duty-bound.