Over 100 registrations and 6 speakers from industry and academia exchanged experiences during the online 10th IGC Symposium, 15th June 2021. Topics were surface properties of catalysts (DSM), coated plates (Wicoatec), cement (EPFL), novel packaging (Univ. of Alberta), membranes (Adscientis) and more – measured by dynamic gas adsorption, also known as Inverse Gas Chromatography (IGC).
The very positive feedback of the participants and the numerous connections afterwards on different topics confirmed the format: science-based IGC with industrial relevance and the openness to discuss also controversial topics! Thought-provoking was definitely Steven Abbott’s presentation about his new concept of “Surface Interaction Parameters”, in short SIP. It is based on the idea of a normalized adsorption energy and inspired by the HSP-concept.
How are adsorption isotherms and measurements at very low, infinite dilutions are connected? Nicolas Leborgne, Adscientis, explained not only, how adsorption isotherms of two different solvents are efficiently obtained by IGC-FC (finite concentration), but also how the different results complement each other. The Adsorption Energy Distribution Function (AEDF) describes the higher (and lower) energy sites – and these results are congruent to the results at infinite dilution. Furthermore, this talk sparked a deeper exchange about the interpretation of adsorption isotherms – great!
The high sensitivity of the 15+ molecular probes used in IGC was demonstrated by Jan Schütz, DSM, by the example of catalyst deactivation at different bed locations and the detailed description about the changes in surface properties. The high sensitivity of IGC was also key in Franco Zunino’s presentation. His research at EPFL on “greener” cement requires detailed insights about materials, treatments and reactivities. IGC delivered exactly the surface sensitive information in addition to images and XRD characterizations.
The growing IGC community was further demonstrated by the international partners of Adscientis, namely Dhananjay Kulkarni (LabIndia, India), Zhi Ouyang (Gravite, China) and Joe Domingue (SciMark International, US).
Surely, this online IGC Symposium brought many different minds together and triggered many thoughts - a great event to remember!
Note: most of the presentations are available at the Inolytix Youtube channel, see link.