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Low sodium Pseudoboehmite
Low sodium Pseudoboehmite
Low sodium Pseudoboehmite
  1. Low sodium Pseudoboehmite
  2. Low sodium Pseudoboehmite
  3. Low sodium Pseudoboehmite

Low sodium Pseudoboehmite

Pseudoboehmite, with the chemical formula ‌AlOOH·nH₂O (n=0.08~0.62)‌, is a kind of incompletely crystallized hydrated alumina, also known as monohydrate alumina or pseudo-monohydrate boehmite.

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Pseudoboehmite is also known as pseudo-boehmite, pseudo,quasi,gelatinous boehmite, or boehmite. It appears as white thixotropic gel in wet state and free-flowing white powder after drying. It features a high specific surface area (300-470 m²/g), large pore volume (0.5-2.0 cm³/g), and excellent peptization performance with a peptization index ≥95%. It is insoluble in water but can be peptized by dilute acid to form a stable transparent sol. After calcination at 550-750℃, it transforms into γ-Al₂O₃, which serves as a high-performance catalyst carrier.

Specification

SiO2

％

Fe2O3 

%

Na2O

％

Al2O3

％

3·H2O

％

      Pore volume         ml/g Bet

m2/g

SO42-
%
≤0.2 ≤0.04 ≤0.1 ≥65 ≤3 0.8～1.2 ≥280

≤1.2

Application

‌Catalyst carrier‌: Pseudoboehmite is widely used in residue oil hydrotreating, vehicle exhaust purification, methanation and other petrochemical and environmental catalysis scenarios.

‌Binder‌: Pseudoboehmite could be added in 10-30% proportion for molecular sieve molding, which can increase the compressive strength of products by 40%.

‌Emerging fields‌: Lithium battery separator coating, electronic ceramics, flame-retardant fillers, heavy metal adsorption materials, etc.

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