A series of the mixed oxides iron and cerium, with an iron(III) oxide content ranging from 0 wt% to 100 were tested as oxygen carriers in chemical looping dry reforming methane (CL-DRM). The reactivity during CL-DRM significantly increased when cerium are forming a oxide. By careful control Fe2O3/CeO2 mass ratio, initial oxidation state reaction time activity carrier material can be adjusted so...

Intra-granular Acicular Ferrite (IAF), as one of the most well-known desirable microstructure of ferrite with a chaotic crystallographic orientation, can not only refine the microstructure and retard the propagation of cleavage crack but also provide excellent combination of strength and toughness in steel. The effect of adding cerium on microstructure and controlling proper cerium-based inclus...

Variable reflectance coatings (switchable mirrors) have significant advantages over traditional absorbing devices for radiant energy control in a variety of architectural and aerospace applications due to their large dynamic ranges in both transmission and reflection in the visible and near infrared regimes. Although electrochromic and gasochromic metal hydride films have been the primary focus...

This study aimed at optimizing the production of glycolic acid from glycerol catalytic oxidation over a silver catalyst supported on mixed cerium-zirconium oxide, to progress towards industrialization derived process. Optimization operating conditions was performed using response surface methodology. We concluded that depends mainly concentration, NaOH/glycerol ratio, catalyst/glycerol and O2/g...

Nano-sized particles of manganese oxides have been prepared by a very simple and cheap process using a decomposing aqueous solution of manganese nitrate at 100 °C. Scanning electron microscopy, transmission electron microscopy and X-ray diffraction spectrometry have been used to characterize the phase and the morphology of the manganese oxide. The nano-sized manganese oxide shows efficient cata...

Raman and IR investigations indicated the presence of reduced graphene oxide (rGO)-like residues on ceria nanoparticles after solvothermal treatment in ethanol. The appearance of such structures is closely related to cerium tert-butoxide as precursor and ethanol as solvothermal solvent. The rGO-like residues improve the catalytic CO oxidation activity. This was also confirmed by introduction of...

Levulinic acid (LA), 4-oxo-pentanoic acid, is a new platform chemical with various potential uses. In this paper, catalytic hydrogenation and oxidation of levulinic acid were studied. It was shown from experiments that levulinic acid can be hydrogenated to γ-valerolactone (GVL) over transition metal catalysts and oxidative-decarboxylated to 2-butanone (methyl-ethyl-ketone, MEK) and methyl-vinyl...

A commercially available matt black paint is used as the primary component of a composite coating for low-temperature flat collector systems. The composed paint, carbon powder (CBP) and lithium metal oxide (LMO) powder. CBP LMO powders are added on top to improve solar-thermal conversion characteristics collector. optical these coatings investigated by means microscopy, spectrophotometry, total...