Alpha alumina catalyst support

Short Description:

α-Al2O3 is a porous material, which is often used for supporting catalysts, adsorbents, gas phase separation materials, etc. α-Al2O3 is the most stable phase of all alumina and is usually used to support catalyst active components with a high activity ratio. The pore size of the α-Al2O3 catalyst carrier is much larger than the molecular free path, and the distribution is uniform, so the internal diffusion problem caused by the small pore size in the catalytic reaction system can be better eliminated, and the deep oxidation side reactions can be reduced in the process for the purpose of selective oxidation. For example, the silver catalyst used for ethylene oxidation to ethylene oxide uses α-Al2O3 as the carrier. It is often used in catalytic reactions with high temperature and external diffusion control.