Séminaire - Martin Thomas - Vendredi 16 juin 2023 - Porous Materials Characterization: key aspects of surface area and pore sizes by physisorption, and active surface area characterization by chemisorption
Invitation : Sandrine Bernardini (action transverse Intégration Hétérogène).
Diffusion : IM2NP, CINaM, Irphe, LP3 (via N. Sannier), Madirel (via P. Boulet), PIIM (via T. Angot), CPT (T. Martin), Fédération de Chimie (via S. Viel), CP2M
SEMINAIRE Vendredi 16 juin 2023 à 10h00
Salle des séminaires de l'Im2np, campus de Saint-Jérôme, 1er étage Bâtiment Poincaré
Martin Thomas
Anton Paar - QuantaTec, USA
Porous Materials Characterization: key aspects of surface area and pore sizes by physisorption, and active surface area characterization by chemisorption
This seminar will provide insight and guidance for surface area and pore size measurements of micropores and mesoporous solids. Detailed consideration will be given to sample preparation, adsorbate selection, increasing measurement sensitivity, the BET surface area calculation, mesopore hysteresis, pore blocking phenomena and modern methods of pore size calculation (density functional theory). The chemisorption topic will feature the evaluation of irreversible and reversible chemisorption and of spillover, and the differences between static isotherm measurements and the dynamic flow technique.
Résumé sur Martin Thomas :
Dr. Thomas has forty years of industrial experience in the characterization of powders and porous materials. After studying for his Masters degree in analytical chemistry and then his doctorate in inorganic/physical chemistry - both at the School of Chemistry, University of Birmingham (UK) - he joined Cookson Group's Central Research labs where he began his specialization in powders. He joined ICI's Catalyst Research Centre (now a Johnson-Matthey facility) in 1985 and spent six years as a Principal Research Officer in charge of the porous materials characterization lab. In 1991 Dr. Thomas joined Quantachrome Instruments which became part of Anton Paar in 2018 . He is currently Lead Scientist for the Surface and Pores product line at Anton Paar and is co-author of ten patents relating to porous materials and their characterization. He is also co-author of "Characterization of Porous Solids and Powders: Surface Area, Pore Size and Density" published by Springer.
