Recently at the ISIS neutron and muon spallation facility, we have developed a new sample environment that allows us to simultaneously interrogate the structure and dielectric properties of materials dynamically during gas absorption and desorption. The combination of structural and dielectric characterisation allows us to investigate the structural changes induced by gas absorption, determine the kinetics and amount of gas absorption/desorption from sample polarisation and probe the subtleties of the absorbate from the microwave loss. Furthermore, analysis of non-sample overtone resonances allow us to investigate sample thermodynamics. Here we will discuss our preliminary investigation on ammonia absorption in simple salt systems before presenting a study of ammonia and SOx absorption in various metal organic framework materials.

Characterising gas absorption by neutron scattering and dielectric resonance

2019 Spring National Meeting

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