Brunauer-Emmett-Teller (BET)
Overview
BET analysis is a fundamental method in surface science and materials characterization, allowing for the quantification of specific surface areas and the assessment of pore size distribution in various materials. It plays a pivotal role in understanding the textural properties of solids, catalysts, adsorbents, and powders.
BET analysis operates on the principle of gas adsorption. It involves exposing a solid sample to a specific gas (often nitrogen) at various pressures and temperatures. As the gas molecules adsorb onto the sample’s surface, the resulting adsorption isotherm is measured.
The BET theory, developed by Brunauer, Emmett, and Teller, utilizes this adsorption isotherm to calculate the specific surface area of the material and assess its porosity. By analyzing the adsorption data, the BET method determines the monolayer capacity, enabling precise calculations of surface area and pore size.
Outermost Technology’s BET Analysis services offer accurate and insightful measurements of surface area and porosity, providing crucial information for materials research, catalyst development, and adsorption studies. Whether you are exploring advanced materials, optimizing processes, or enhancing product performance, our state-of-the-art BET equipment and experienced analysts empower you to unlock the textural mysteries hidden within materials.
Services
- Specific surface area (m2/g)
- Pore size distribution
- 2 nm ~ 300 nm or 0.8nm ~ 300 nm
Pricing
- Regular service: Starts from $350 per sample with 5 – 7 days turnaround.
- Relaxed service: Starts from $250 with 7 – 10 days turnaround.
- For a comprehensive overview of our pricing structure, please log in to the Bee Portal.
Equipment
- The TriStar II Plus provides an efficient high throughput system with three sample ports operating simultaneously and independently. For additional throughput, up to four units can be operated with one computer.
- Surface areas as low as 0.01 m2 /g can be measured with the standard nitrogen system. A Krypton Option can extend surface area measurements to as low as 0.001 m2 /g.
- The TriStar II Plus accommodates analysis with a variety of adsorbates including argon, carbon dioxide, and other noncorrosive gases such as butane, methane, and other light hydrocarbons.
- Free space can be measured, calculated, or manually entered providing maximum flexibility in accommodating special sample types and emphasizing speed when needed.
- Isothermal Jackets ensure a constant thermal profile along with the full length of both sample and saturation pressure (Po) tubes.
- Micromeritics MicroActive data reduction and control software enables the user to interactively calculate surface area and porosity. User-selectable data ranges through the graphic interface allow direct modeling for BET, t-Plot, Langmuir, and DFT interpretation.
- The enhanced software capabilities allow comprehensive pore size distribution data by gas adsorption & mercury intrusion overlay and advanced NLDFT.
FAQ
A: BET analysis, which stands for Brunauer-Emmett-Teller analysis, is an analytical technique used to measure the specific surface area and assess the porosity of materials by studying gas adsorption on their surfaces.
A: BET analysis works by exposing a solid sample to a specific gas (typically nitrogen) at various pressures and temperatures. As the gas molecules adsorb onto the sample’s surface, the resulting adsorption isotherm is measured. The BET method uses this data to calculate the specific surface area and pore size distribution of the material.
A: BET analysis can be applied to a wide range of materials, including solids, catalysts, adsorbents, powders, and porous materials. It is particularly useful for characterizing the textural properties of materials.
A: BET analysis is widely used in the characterization of catalysts, adsorbents, porous materials, and powders. It finds applications in research areas such as materials science, chemistry, environmental science, and chemical engineering.
A: BET analysis provides information about the specific surface area, which quantifies the extent of the material’s external and internal surface. It also assesses the pore size distribution, helping to determine the material’s porosity and pore volume.
A: BET analysis is crucial in materials research and development because it provides insights into the textural properties of materials. Understanding specific surface area and porosity is essential for optimizing materials for various applications, such as catalyst design, adsorption studies, and porous material characterization.
A: In catalyst development, BET analysis helps assess the surface area available for chemical reactions, which is critical for optimizing catalyst performance. It aids in determining catalyst pore structure and catalytic activity.
A: Yes, BET analysis can be employed in quality control to assess the consistency of material properties, such as specific surface area and porosity, ensuring that products meet specified quality standards.
A: Outermost Technology’s BET Analysis services offer precise measurements of specific surface area and porosity, providing valuable data for materials characterization. Whether you are conducting research, developing catalysts, or optimizing porous materials, our expertise and state-of-the-art equipment support your material characterization needs.
A: The advantages of BET analysis include its ability to provide quantitative data on surface area and porosity, its non-destructive nature, and its versatility in analyzing a wide range of materials. It is a fundamental technique for understanding the textural properties of materials.