Method for adjusting the pore structure of activated alumina
For activated alumina, we also know that its pore structure is very important, and some chemical reactions are completed by the different characteristics of its pore structure, but when we shape it as a carrier, for its We can adjust this structure, and there are mainly two methods, the following is the relevant introduction.
1. Pore-enlarging agent method: According to its function, it can be divided into two types: physical pore-enlarging agent and chemical pore-enlarging agent.
1. The physical pore-enlarging agent is used to decompose into gas and escape during the calcination process, releasing the space originally occupied. The advantages are: the method is simple.
2. The chemical pore-enlarging agent reacts chemically with pseudo-boehmite to change the particle size and dispersion state of pseudo-boehmite. The advantage is that the pore size formed by activated alumina is good.
2. Low-temperature sintering method: Add a low-temperature sintering agent with moderate sintering ability when forming activated alumina, adjust the formula and dosage of sintering agent, so that the sintering reaction of alumina occurs at a lower temperature, which can effectively control the activated alumina. hole structure.
The above is the introduction of the two methods of adjusting the pore structure of activated alumina in the carrier molding. For these two methods, we can choose according to our environmental needs during production, and the selection method can be used for our products. The hole adjustment operation makes our products better applied.