Probing ethane phase changes in bead pack via high-field NMR spectroscopy

Phase equilibria analysis in two-phase systems requires discernment of the individual phases as well interfacial region. The phase behavior fluids constraint geometries have been studied through several techniques. High-Field Nuclear Magnetic Resonance (HF-NMR) can be used to detect fluid phases, i.e. gas, liquid, or supercritical fluid, bulk under confinement. In solution-state HF-NMR, each exhibits a distinct chemical shift that correlates density. turn, emergence multimodal NMR spectra reveals coexistence multiple systems. Our results for ethane show HF-NMR enable tracking changes bulk, but also macro-scale (10–100′s μm pore size) porous at various pressure and temperature conditions, even when system us out equilibrium. These creates potential opportunities investigate influenced by confinement systems, though additional steps are necessary.