X-Ray Diffraction and Differential Scanning Calorimetry results for Synthetic Ferrihydrites, with 0-35% Aluminium (Al) or Gallium (Ga), Goethites, with 0-9% Al or Ga, Amorphous Al oxyhydroxide, Boehmite, and alpha Ga oxyhydroxide
Description
X-Ray Diffraction (XRD) and Differential Scanning Calorimetry (DSC) results for synthetic (substituted) ferrihydrite (Fh), (substituted) goethite (Goe), amorphous aluminium oxyhydroxide (AlO(OH)), boehmite (Boe), and alpha gallium oxyhydroxide (GaO(OH)). The numbers in the substituted Fh and Goe names indicate the amount of substitution in mol percent. The XRD data for the ferrihydrites and goethites were obtained through measurements on the CRISTAL beamline at synchrotron SOLEIL. The Fh and Goe were put in glass capillaries with a diameter of 1 mm, and the Fh were measured at a wavelength of 0.051427 nm while the Goe were measured at a wavelength of 0.07287 nm. The diffractograms for AlO(OH), Boe, and GaO(OH) were obtained with a Copper K-alpha source D2-phaser X-Ray Diffractometer (Bruker) located at the synchrotron. The DSC results were obtained with the LabSys evo (Setaram) at the synchrotron SOLEIL. The oxyhydroxide powder was put in an Al2O3 crucible, which was heated from 30 to 1000 degrees Celsius and back at a rate of 5 degrees per minute. Both the loss in weight and the heat flow were measured.