Sorption Science Webinars/Workshops Directory

In the fight against climate change, DAC has emerged as a promising solution to remove carbon dioxide directly from the atmosphere, offering a sustainable pathway to mitigate greenhouse gas emissions. This webinar brings together leading experts in the field who explore the latest advancements in DAC technology, with a particular focus on the role of adsorption processes. Researchers from Imperial College London discuss recent findings and key technological considerations for advancing Direct Air Capture (DAC) through adsorption. This will be followed by a presentation from Dr. Paul Iacomi, Product Manager of DVS Carbon, who provides detailed practical case studies showcasing DAC in action using advanced sorption instrumentation.

Dynamic Vapor Sorption (DVS) instruments are commonly used to measure sorption isotherms on a diverse array of materials, including powders, fibers, films, particulates, and other solid surfaces. These isotherms can be obtained with various gases and vapors over a wide range of temperatures. Isotherm size, shape and hysteresis can elucidate mechanistic information about vapor/gas-solid interactions. Further, by applying the correct isotherm models, it is possible to determine additional material properties, such as surface areas, monolayer capacities, micro- and meso-porosity, and sorption enthalpies. This educational and informational webinar focuses on the interpretation of isotherm attributes and the application of various surface and bulk isotherm models.

Presenter: Dr. Daniel J. Burnett
Host: Brad McGroarty
Website: https://www.surfacemeasurementsystems.com/learning-center/webinars/
Email: science@surfacemeasurementsystems.com

This webinar covers an in-depth introduction to the Inverse Gas Chromatography – Surface Energy Analyser (iGC-SEA) technique and the concept of surface energy. It explores the versatility of the iGC-SEA technique and how it can be used in the study of pharmaceuticals, polymers, carbon materials and fibres. The case studies presented highlight the use of the system to measure BET specific surface area, surface energy and surface heterogeneity. Studies also demonstrate the effects of changing conditions of temperature and humidity on materials.

Traditional BET surface area measurements are typically performed by volumetric, gas sorption techniques. These methods require exposing the material of interest to very low pressures (10-3 Torr and below) and cryogenic temperatures (77K). These conditions can have deleterious affects on many classes of materials; including pharmaceuticals, foods, cellulose-based samples, and natural ingredients. In particular, low pressures and temperatures can cause structure collapse or phase changes on fragile solids. Flow-based sorption techniques, like Dynamic Vapor Sorption (DVS) and Inverse Gas Chromatography (IGC) can be performed at atmospheric pressure and room temperature. These techniques can be used to determine BET surface areas at industrially relevant and environmental storage conditions. In addition, these techniques can be performed over a wide range of relative humidity conditions, which allow surface characterization and determination of surface areas at ‘real-world’ conditions.

This educational seminar overviews the BET surface area principle by DVS and IGC. Also, it compares results with volumetric measurements and highlight the application of DVS and IGC surface area measurements on a range of materials.

Almost all production stages involve moisture sorption and drying processes, which would affect the physical and chemical stability of the materials. For food materials, the moisture sorption properties are critical for shelf-life stability. This is especially true for materials like biscuits or crackers which are vulnerable to either temperature or humidity shocks. This study uses the Dynamic Vapour Sorption (DVS) technique to focus on the influence of sample size and morphology on the moisture sorption behavior of food materials including biscuits and crackers.

Presenter:
Dr. Daryl Williams
Founder
Surface Measurement Systems

In the real world, capture/adsorption of CO2 is often a competition with other gas-phase species, most commonly water vapour. In some cases, the concentration of H20 vapor is much higher than that of CO2 further complicating the adsorption process.

This presentation, delivered by one of the world’s leading authorities in sorption science, Dr. Daryl Williams, will compare the use of two of the most commonly used experimental approaches for studying CO2 sorption in the presence of H20 vapor; gravimetric analysis using Dynamic Vapour Sorption (DVS) and breakthrough analyzer studies. To give the audience maximum insight, experimental details and case study comparisons of adsorbent performance will also be presented