BET equation

The BET equation, named after scientists Brunauer, Emmett, and Teller, is used to describe how gases adsorb onto solid surfaces. It helps determine the surface area of materials like catalysts and porous substances. The equation extends the Langmuir isotherm model, accounting for multiple layers of gas adsorption rather than just one. By analyzing the relationship between the amount of gas adsorbed and the pressure at different conditions, researchers can calculate important properties of materials, which is crucial in fields like material science, chemistry, and environmental science.