Measuring H2, CH4 and SO2 sorption by porous materials using the XEMIS microbalance

High pressure adsorption is of significant interest for a range of applications, including the storage of gases such as hydrogen and methane and the separation and purification of various gas and vapor species. In each case, it is important to be able to accurately characterize the adsorption behavior of different materials under practical conditions; however, measurements at elevated pressures, in particular, can be challenging [1]. Furthermore, the compatibility of components for use with corrosive species, which are of interest for environmental applications, for example, is a serious practical issue. In this application note, we present data measured under a range of challenging experimental conditions using a Hiden Isochema XEMIS microbalance. For this purpose, we selected a metal-organic framework (MOF), a shale and a zeolite. Of particular note is, firstly, the practical requirement to be able to characterize small MOF samples for research purposes and, secondly, the low gas uptakes shown by shales, which are highly heterogeneous natural materials. Shales are of great practical interest due to the shale gas boom but their characterization requires high pressures and elevated temperatures to mimic geologically-relevant conditions .