To understand the formation of structural isomers alumina (Al2O3) on surfaces Fe–Cr–Al alloys, cathodoluminescence (CL), X-ray photoelectron spectroscopy (XPS), and diffraction (XRD) were used. The alloys annealed under oxygen at a low partial pressure to focus initial Al2O3. XRD revealed that corundum (α-Al2O3) was predominantly formed alloy after annealing approximately 1100°C, whereas γ-Al2O...

Ammonia has been suggested as a carbon-free hydrogen source, but a convenient method for producing hydrogen from ammonia with rapid initiation has not been developed. Ideally, this method would require no external energy input. We demonstrate hydrogen production by exposing ammonia and O2 at room temperature to an acidic RuO2/γ-Al2O3 catalyst. Because adsorption of ammonia onto the catalyst is ...

The catalytic wet air oxidation (CWAO) of cationic red GTL over the Fe2O3-CeO2-Bi2O3/γ-Al2O3 catalyst was investigated under mild operating conditions in a batch reactor. The catalyst was prepared by wet impregnation, and characterized by N2 adsorptiondesorption (BET measurement), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). The effect of the reaction conditions (catalyst...

Two preparation methods (wet saturation impregnation with vanadyl acetylacetonate and ball-milling of γ-Al2O3 with crystalline V2O5) were applied to produce two sets of VOx/γ-Al2O3 catalysts with increasing vanadium loadings. Materials from both sets were characterized by XRD, SEM, Raman, TPR and UV/Vis-DRS to elucidate the influence of the preparation method on the morphology of VOx species an...

In the present study, γ-Al2O3 was fabricated from Tan Rai alumina hydroxide by some following steps: purifying hydroxitde HCl solution 5% to remove impurities, dissolving 25% obtain AlCl3 and then react with (NH4)2CO3 get AACH, decomposition of AACH at 500oC produce γ-Al2O3. After that, Sodium dodecyl sulfate (SDS) used modify surface increased area. The material will be removal Rhodamine B was...

One of the main reactions that can be used to reduce greenhouse gases emissions is Reverse Water Gas Shift (RWGS) reaction. Through this reaction CO2 is converted to CO to produce beneficial chemicals such as methanol. In this paper Mo/Al2O3 catalyst was prepared and then promoted with Ni ions through impregnation method to produce Ni-Mo/Al2O3 catalyst. The structures of the catalysts were stud...

The supported transition metal oxides, chlorides, carbides, and so forth (MXn), represent an important type of catalyst for redox processes. MXn–support interaction, analogous to metal-support plays a critical role in reactions. Herein, we illustrated the nature monolayer CuCl2–γ-Al2O3 its catalytic consequence induced by support facets ethylene oxychlorination. Kinetic theoretical studies, com...