Elastic diffraction of fast atoms at crystal surfaces under grazing incidence $\ensuremath{\theta}\ensuremath{\approx}1$\ifmmode^\circ\else\textdegree\fi{} has strong similarities with atomic thermal energies discovered almost hundred years ago. Here, we focus on the polar scattering profile, which does not exhibit features but shows well-defined elastic and inelastic components that are found ...

Abstract Porous silica-based nanospheres bearing titanium centres as single site were successfully synthesized employing a time- and energy-efficient procedure. The influence of the post-synthesis treatment on insertion Ti was investigated via DR UV–Vis XPS spectroscopy content quantified through ICP-OES analysis. textural structural properties different solids evaluated XRD, TEM N2 physisorpti...

The study of the deactivation HY zeolites in dehydration reaction glycerol to acrolein has represented a challenge for design new catalysts. with SiO2/Al2O3 molar ratios between 3.5 and 80 were studied. solids characterized by XRD, N2 physisorption, SEM-EDXS, Raman UV-vis spectroscopies, infrared spectroscopy pyridine (FTIR-Py) catalytic activity tests from 250 °C 325 °C. It was found that tota...

In this study, the sorption capacity of limestone samples for CO2 was investigated to determine conditions under which they can be used in high-temperature carbonate loop process. For work, from Czech Republic were used, contained a high proportion CaO (more than 97 wt.%). A total 20 cycles calcination (950 °C) and subsequent sorption–carbonation (650 performed each sample tested. The towards 2...