Santa Barbara Amorphous-15 (SBA-15) is a highly stable mesoporous silica sieve developed by researchers at the University of California at Santa Barbara. It gets it high hydrothermal and mechanical stability from a framework of uniform hexagonal pores that feature a narrow pore-size distribution and a tunable pore diameter of 5nm to 15nm, but, most significantly, from its relatively thick walls, which range between 3.1nm and 6.4nm. SBA mesoporous silica 15 has a high internal surface area, which lends itself to various applications, including environmental adsorption and separation, advanced optics, and catalysts.
Mesoporous silica SBA-15 is synthesized in acidic conditions using triblock copolymer Pluronic 123 (EO20PO70EO20) as a pattern and tetraethoxysilane (TEOS) for the source of silica. Once synthesis is complete, the organic template is removed by a variety of methods, including calcination; reflux extraction; H2O2 treatments; microwave digestion; and/or washing with pure solvents, ethanol, acetone, or water. ACS Materials’ SBA-15 was calcined in air at 823 Kelvin for 6 hours, resulting in a fine, white powder.
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CAS No.: 7631-86-9
1. Preparation Method
Key features of our SBA-15 products are:
|Particle Size (μm)||1~4|
|Pore Diameter (nm)||6~11|
|Pore Volume (cm3/g):||1.46|
|BET surface area (m2/g)||≥550|
|Comparative Crystallinity (%)||≥90|
|BJH Desorption Cumulative Volume of Pores (cm3/g)||
|Bulk Density (g/cm3)||
|Tap Density (g/cm3)||0.145|
This product is calcined and ready to use directly.
Typical SEM Image of ACS Material Mesoporous Silica Molecular Sieve SBA-15 (1)
Typical SEM Image of ACS Material Mesoporous Silica Molecular Sieve SBA-15 (2)
Typical XRD Analysis of ACS Material Mesoporous Silica Molecular Sieve SBA-15
Typical BET Analysis of ACS Material Mesoporous Silica Molecular Sieve SBA-15
3. Application Fields
1) Catalyst carrier
2) As a templating agent
1. What is the final calcination temperature used during synthesis?
The material is calcined in air at 823 Kelvin for 6 hrs to decompose the triblock co-polymer and yielding a white powder, SBA-15. This is the typical method for preparing SBA-15.
2. What is the collapsing temperature of SBA-15?
About 750 degrees Celsius.