(225s) Quantifying Binary Adsorption Equilibria on Small Adsorbent Samples

Quantifying competitive binary adsorption equilibria is essential for process design and validating molecular simulations. However, these measurements are time-consuming and hence, such data is scarce. The measurements are even more challenging when only small quantities of adsorbents are present, which is all too common in early-stage adsorbent development. In the last two years, our group has been developing micro-scale dynamic column breakthrough (μ-DCB) system that provides quantitative unary and binary equilibrium data on milligram quantities of adsorbent [1]. Particularly, the μ-DCB is capable of measuring loadings as low as 0.0020 mmol /g. In this contribution we demonstrate how this technique can provide accurate unary and binary adsorption of CH4, N2 and CO2 and a variety of adsorbents: NIST standards (Zeolite Y and ZSM-5) and BPL activated carbon. This study establishes the DCB to be a reliable, quick, and rather inexpensive method to measure competitive adsorption equilibria .

1.Wilkins NS, Sawada JA, Rajendran A. Quantitative Microscale Dynamic Column Breakthrough Apparatus for Measurement of Unary and Binary Adsorption Equilibria on Milligram Quantities of Adsorbents. Industrial & Engineering Chemistry Research. 2022 May 12;61(20):7032-51.