Flow supercritical synthesis of brucite and magnesian T-O, T-O-T phyllosilicates : an opportunity to tune the structure with the solvent composition
Language
en
Article de revue
This item was published in
Clay Minerals. 2018-09, vol. 53, n° 3, p. 497-503
Mineralogical Society
English Abstract
This work presents the synthesis of minerals with a layered structure in supercritical water/ethanol mixtures to decrease the critical coordinates of the solvent regarding water. Depending on the water/ethanol ratio of the ...Read more >
This work presents the synthesis of minerals with a layered structure in supercritical water/ethanol mixtures to decrease the critical coordinates of the solvent regarding water. Depending on the water/ethanol ratio of the solvent, we obtained three different minerals adopting an octahedral brucitic sheet: (1) without a Si-tetrahedral sheet (O); (2) associated with one Si-tetrahedral sheet (T-O); or (3) intercalated between two Si-tetrahedral sheets (T-O-T). We have thus shown that ethanol in a supercritical water/ethanol mixture changes the solubility of silicon with a direct consequence on the formation of the tetrahedral silicon sheets and thus makes it possible to control the structure of the synthesized layered material.Read less <
Origin
Hal imported