Pore Size and Pore Volume Measurement of Metal Organic Frameworks
ABSTRACT Researchers involved in the field of functional solids need to understand the pore structure of the innovative class of solids called Metal Organic Frameworks (MOFs). Anton Paar’s Autosorb iQ-MP and XR are the optimal precision gas sorption analyzers to investigate these otherwise challenging materials.
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Metal-organic frameworks are crystalline solids with very high pore volumes and surface area, and as such, many are candidates for gas storage and gas separation. Theoretically the pore size can be calculated from X-ray diffraction and other scattering techniques. However, gas sorption has the unique ability to directly probe the pore space thereby revealing additional information about the true nature of the material (is the porosity accessible?), and can additionally reveal structural changes in non-rigid materials. As such it can confirm the suitability, or not, of candidate materials for such gas storage applications.
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