Abstract
A new instrumentation for in situ X-ray powder diffraction allows to follow structural changes in the crystal structure of flexible coordination polymers during adsorption and desorption of gases. The system is based on closed cycle He-cryostat that ensures the high temperature stability in the range of 5.5–450K. The automated gas dosing system facilitates the physisorption measurements in the pressure range of 0.01–130kPa. The system is implemented on KMC-2 and MAGS beamlines at Helmholtz Zentrum Berlin für Materialien und Energie. Using new instrumentation, the adsorption of CO2 and n-butane at 273K on a flexible two-dimensional coordination polymer ELM-11 (ELM – Elastic Layer Material) was investigated.
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