Publications by authors named "Jean-Michel Chezeau"
The structure of AlPO4-SOD, a microporous aluminophosphate synthesized in a quasi-nonaqueous system using dimethylformamide as template and solvent, was previously reported. Then, various solid state nuclear magnetic resonance techniques applied on the dehydrated compound at 200 degrees C were performed and suggested a rearrangement of one-third of the template molecules inside the sodalite cages and a tripling of the unit cell parameter c. We present here the structure determined from molecular modeling and Rietveld analysis on synchrotron data of AlPO4-SOD dehydrated under vacuum at 100 degrees C together with some solid state NMR experiments of the rehydrated product.
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- Two different calcium-rich bentonites from Greece and Turkey were analyzed using X-ray diffraction, thermal analysis, and solid-state NMR to understand their properties before and after activation with solid Na(2)CO(3).
- The activation process enhances the exchange of calcium ions (Ca²⁺) with sodium ions (Na⁺), primarily at the edges of the bentonite layers, which boosts their ability to adsorb bovine serum albumin (BSA), a model protein.
- A direct relationship was found between the level of Ca²⁺/Na⁺ exchange, the BSA adsorption strength, and the unfolding of the BSA protein structure.