BET mesopores

Objective and principle

Determination of surface area and porosity of a solid by the BET method (Brunauer, Emett & Teller).

The amount of nitrogen absorbed – desorbed by the solid at low temperature and relative pressure allows the determination of its specific area.

Technical data

Micromeritics Tristar
Mesoporous solid:  2 nm < d_pore < 50 nm
P/Po : 10^-2 to 1
1 to 6 samples per use

Analysis conditions / submit a sample

• Sample = degassed powder under vacuum at low temperature
• Sample amount: from 50mg to 200mg
• Anticipate degassing conditions (humidity)
• Use of specific glass tubes (the ones of your team, reference of the tubes available @ Dominique Bégin)
• Standard analysis (time: a few hours) = book the equipment for a day (or a night possible)

Contact

• Scientific referee : Dominique Bégin
• technical referee and training referee : Dominique Bégin and Sécou Sall