What are the important indicators of pseudo boehmite? Where can I buy fake boehmite?

Pseudoboehmite exhibits unique physical and chemical properties due to its unique structure. Its physical and chemical properties are different from other alumina hydrates in the following aspects. Today, Yangzhou Zhongtianli shares with you the important parameters of the proposed boehmite? Let's get to know more together

1、 Important indicators of pseudo boehmite

1. Specific surface area and pore volume

The structural water content of macroporous pseudo boehmite can reach 30%, so many inner pores and inner surface areas will be formed during the dehydration process. The following table lists the specific surface area changes of macroporous pseudo boehmite with different crystallinity.

As the crystallinity increases, the specific surface area of macroporous pseudo boehmite greatly decreases, mainly due to the increase in crystallinity, the decrease in water in the layer structure, and the decrease in inner pores and specific surface area after dehydration. In addition, the specific surface area of pseudo boehmite is significantly different when dried at 120 and 150, and decreases when dried at high temperatures. Therefore, by adjusting the surface properties of macroporous pseudo boehmite particles and improving dehydration conditions, the pore volume and structure of macroporous pseudo boehmite can be greatly changed.

2. Stable hot melt

Large pore pseudo boehmite has high thermal stability, and its differential thermal analysis curve has an endothermic peak between 400 and 450, while gibbsite generally has an endothermic peak around 200. The specific surface area of the dehydrated pseudo boehmite further increases, approximately 100 milliliters per gram compared to the gibbsite catalyst.

As the crystallinity increases, the specific surface area of pseudo boehmite greatly decreases, mainly due to the increase in crystallinity, the decrease in water in the layer structure, and the decrease in inner pores and specific surface area after dehydration. In addition, the specific surface area of macroporous pseudo boehmite is significantly different when dried at 120 and 150, and decreases when dried at high temperatures. 3. Colloid solubility

Macroporous pseudo boehmite is widely used in the catalyst industry, and more importantly, it also has a characteristic of gelation. The large pore pseudo boehmite has good adhesive solubility, and the adhesive solubility of carbonization products is generally greater than 95%, while the adhesive solubility of SB (large pore pseudo boehmite) powder produced by aluminum alkoxide method can reach 98%.

The generated Al3 ionizes in water and coordinates with OH - to form a colloidal nucleus. The colloidal nucleus selectively adsorbs positively charged hydrogen ions, while negatively charged NO3- dissociates around the colloidal nucleus due to attraction and diffusion, forming a double electron layer structure. Only a small amount of nitric acid is enough to dissolve all gel filter cakes and become a sol with good fluidity.

2、 Where to buy pseudo boehmite is reliable

For procurement of proposed boehmite, you can contact Yangzhou Zhongtianli for consultation. Yangzhou Zhongtianli focuses on producing and selling isopropanol aluminum, pseudo boehmite, high-purity aluminum oxide, and other manufacturers. It has three major factories and can customize impurity element separation and particle size morphology.

About the knowledge related to pseudo boehmite, Zhongtianli editor will share it with you today. Follow us to learn more