Rapid determination of experimental sorption isotherms from non-equilibrium sorption kinetic data

作者：Andrey A. Bezrukov, Daniel J. O’Hearn, Victoria Gascón, Catiúcia R. M. O. Matos, Kyriaki Koupepidou, Shaza Darwish, Suresh Sanda, Naveen Kumar, Xia Li, Mohana Shivanna, Michael J. Zaworotko · 发表于：Chem · 年份：2024 · DOI：10.1016/j.chempr.2024.01.011 · 被引用次数：12 · 研究领域：Metal-Organic Frameworks: Synthesis and Applications、Covalent Organic Framework Applications、Carbon Dioxide Capture Technologies

Herein, we report a new method for rapid determination of experimental sorption isotherms that exploits gravimetric non-equilibrium sorption kinetics data in a thin sorbent bed. In comparison with equilibrium-based isotherm determination methods, this sorption kinetics isotherm determination (SKID) method needs only two equilibrium points, P/P0min and P/P0max. SKID requires up to an order of magnitude less data collection time than conventional methods and is suitable for high-throughput sorbent discovery and evaluation. SKID was validated by testing a library comprising 30 sorbents, including rigid and flexible metal-organic frameworks (MOFs), inorganics (zeolites), and organics (microcrystalline cellulose). Average data collection time for water vapor was 3.1 vs. 23 h for dynamic vapor sorption experiments. SKID was also demonstrated for other vapors (C8 aromatics) and a gas (CO2), making it a promising tool for rapid screening of new or existing sorbents for applications such as water harvesting and dehumidification and carbon capture.