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SBA-15

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SKU# 23

Hydrothermal Method

Product Detail

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

Hydrothermal Method

2. Characterizations

Key features of our SBA-15 products are:

Appearance: White Powder
Particle Size (μm) 1~4
Pore Diameter (nm) 6~11
Pore Volume (cm3/g): 1.46
BET surface area (m2/g)  ≥550
Phase p6mm
Comparative Crystallinity (%) ≥90
BJH Desorption Cumulative Volume of Pores (cm3/g)

0.6793

Bulk Density (g/cm3)

0.067

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 (1)

Typical SEM Image of ACS Material Mesoporous Silica Molecular Sieve SBA-15 (2)

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 XRD Analysis of ACS Material Mesoporous Silica Molecular Sieve SBA-15

Typical BET 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

3)    Nanomaterials

 

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FAQs

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.

3. What are the impurity elements in SBA-15?

The impurity is Na2O, whose content is less than 0.1%.

4. Which What method was used to measure pore volume?

We use a BET specific surface area test method. The instrument itself has a specific method for determining the pore volume.

5. Which BET method is used to calculate 1) Pore volume 2) Desorption cumulative volume of BJH pores?

We used BET test of liquid nitrogen adsorption. These two data are shown in the test results.

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