LAB TESTING AREAS
Brunauer–Emmett–Teller (BET) Method
Particle Sizing and Density
What is BET?
The Brunauer–Emmett–Teller (BET) theory is the most widely accepted method for determining the specific surface area of solid and porous materials. The process involves:
- Degassing the sample to remove moisture and volatile compounds.
- Introducing an inert gas (typically nitrogen, N₂) at cryogenic temperatures.
- Measuring gas adsorption as pressure increases under constant temperature, forming a monolayer on the sample surface.
The amount of gas adsorbed is used to calculate the surface area, offering valuable insights into material behavior and performance.
What Can You Do With BET?
BET analysis supports a wide range of applications:
- Catalysis: Higher surface area means more active sites, improving reaction efficiency.
- Adsorption: Materials like activated carbon and zeolites rely on surface area for gas storage, filtration, and environmental remediation.
- Battery and Fuel Cell Performance: Electrodes with high surface area can enhance charge transfer and energy storage capacity.
- Pharmaceuticals: Surface area influences drug dissolution rates and bioavailability.
- Materials Science: Surface area impacts sintering, grain growth, and mechanical properties in ceramics and powders.
Why Choose RJ Lee Group for BET Analysis?
RJ Lee Group offers advanced BET surface area analysis tailored to both routine testing and high-end research:
- Anton Paar NOVA BET Analyzer: Analyzes up to four samples simultaneously for fast, reliable surface area, pore size and pore volume.
- Anton Paar Autosorb High Vacuum Physisorption Analyzer: Ideal for complex studies, offering high-resolution micropore analysis using nitrogen or krypton gas.
We also offer comprehensive particle characterization by combining BET analysis with:
- Density by pycnometry
- SEM/EDS
- Particle size distribution (PSD)
Get in Touch
Connect with RJ Lee Group to see how advanced Brunauer–Emmett–Teller (BET) instrumentation and expert analysis come together to support our clients and provide answers to their most complex questions.
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