T he role of Sm addition on water gas shift performance Re/ceria was studied. A redox cycle between Ce4+ and Ce3+ ceria support by oxygen vacancies generation is one the elementary step in mechanism. In this work, we have attempted to enrich content at surface Re/doped enhance performance. The reaction carried out over Re/Sm-doped catalysts with different contents (0, 5, 10, 15 wt%). H2-TPR exp...

Boron- and cerium-codoped TiO2 photocatalysts were synthesized using modified sol-gel reaction process and characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), particle size distribution (PSD), diffuse reflectance spectra (DRS), and Brunauer-Emmett-Teller (BET). The photocatalytic activities were evaluated by monitoring the degradation of dye Acid Red B (ARB). The r...

Manganese oxides attract considerable attention as redox catalysts for abatement of environmental pollutants due to their relatively high activity and low costs contrary noble metal catalysts. The present work is focused on the effect cryptomelane-type MnO2 catalyst modification with Fe3+, Ce3+/Ce4+, Sn4+ phase composition, structural peculiarities, catalytic in CO oxidation. samples are invest...

The luminescence properties of NASICON-type Na3.6M1.8(PO4)3 (M = Y, Lu) and Na3Sc2(PO4)3 phosphates, undoped rare earth-doped (RE Tb3+, Dy3+, Eu3+, Ce3+), were studied using synchrotron radiation in a wide energy region 4.5–45 eV. Intrinsic emission originating from self-trapped excitons with electron component localized at the 3d Sc states was detected both doped while only defect-related regi...