Mechanical Characterization of Hierarchical Structured Porous Silica by in Situ Dilatometry Measurements during Gas Adsorption

Deformation of Microporous Carbon during Adsorption of Nitrogen, Argon, Carbon Dioxide, and Water Studied by in Situ Dilatometry.

Adsorption-induced deformation of a monolithic, synthetic carbon of clearly distinguishable micro- and mesoporosity was analyzed by in situ dilatometry with N2 (77 K), Ar (77 K), CO2 (273 K), and H2O (298 K). A characteristic nonmonotonic shape of the strain isotherm showing contraction of the sample at initial micropore adsorption followed by expansion toward completion of micropore filling wa...

Adsorption-Induced Deformation of Hierarchically Structured Mesoporous Silica—Effect of Pore-Level Anisotropy

The goal of this work is to understand adsorption-induced deformation of hierarchically structured porous silica exhibiting well-defined cylindrical mesopores. For this purpose, we performed an in situ dilatometry measurement on a calcined and sintered monolithic silica sample during the adsorption of N2 at 77 K. To analyze the experimental data, we extended the adsorption stress model to accou...

Multiscale Modelling and Mechanical Characterization of Porous Hierarchical Hydroxyapatite

Group G 2 So far, bone surgeons have implemented three techniques for bone repair: autografting (healthy bone tissue taken from the patient’s own body), allografting (healthy bone tissue taken from a donor) and synthetic bone graft substitutes (artificial biomaterial similar to bone). Autografting is considered as the ‘gold’ standard. However the volume of bone that can be safely harvested is l...

Multi-scale Modelling and Mechanical Characterization of Porous Hierarchical Hydroxyapatite

Fluorocarbon adsorption in hierarchical porous frameworks.

Metal-organic frameworks comprise an important class of solid-state materials and have potential for many emerging applications such as energy storage, separation, catalysis and bio-medical. Here we report the adsorption behaviour of a series of fluorocarbon derivatives on a set of microporous and hierarchical mesoporous frameworks. The microporous frameworks show a saturation uptake capacity f...