Topic
Mixed oxide
About: Mixed oxide is a research topic. Over the lifetime, 5224 publications have been published within this topic receiving 115567 citations.
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TL;DR: In this article, the selective oxidation of hydrogen sulfide in the presence of excess water and ammonia was studied over V-Sb-O/TiO 2 catalyst, which showed very high conversion of H 2 S without any harmful emission of SO 2.
Abstract: The selective oxidation of hydrogen sulfide in the presence of excess water and ammonia was studied over V-Sb-O/TiO 2 catalyst. They showed very high conversion of H 2 S without any harmful emission of SO 2 . The investigation was focused to understand the roles of several oxides. Therefore, V 2 O 5 /SiO 2 , V 2 O 5 /TiO 2 , the mechanical mixture catalyst (V 2 O 5 +Sb 2 O 4 ) and V-Sb-O/TiO 2 are studied separately. TiO 2 support increased the activity and stability of V 2 O 5 . Sb 2 O 4 increased the reoxidation of reduced V 2 O 5 by supplying spillover oxygen through the boundaries of the metal oxides. VSbO 4 was one of the main active phase in V-Sb-O/TiO 2 mixed oxides.
55 citations
TL;DR: In this paper, the authors showed that the Ta atoms are inserted into NiO crystal lattice, resulting in the formation of a new Ni-Ta oxide solid solution, and more Ta atoms were found at the lattice sites of crystal surface in sol-gel catalyst.
55 citations
TL;DR: The facile formation of IrxCo1-xOy nanotubes was mainly ascribed to the inclination of Co3O4 to form the nanot tubes during the calcination process, which could play a critical role in providing a template of tubular structure and facilitating the formation ofIrO2 by being incorporated with Ir precursors.
Abstract: Here, we report the unique transformation of one-dimensional tubular mixed oxide nanocomposites of iridium (Ir) and cobalt (Co) denoted as IrxCo1–xOy, where x is the relative Ir atomic content to the overall metal content. The formation of a variety of IrxCo1–xOy (0 ≤ x ≤ 1) crystalline tubular nanocomposites was readily achieved by electrospinning and subsequent calcination process. Structural characterization clearly confirmed that IrxCo1–xOy polycrystalline nanocomposites had a tubular morphology consisting of Ir/IrO2 and Co3O4, where Ir, Co, and O were homogeneously distributed throughout the entire nanostructures. The facile formation of IrxCo1–xOy nanotubes was mainly ascribed to the inclination of Co3O4 to form the nanotubes during the calcination process, which could play a critical role in providing a template of tubular structure and facilitating the formation of IrO2 by being incorporated with Ir precursors. Furthermore, the electroactivity of obtained IrxCo1–xOy nanotubes was characterized for...
55 citations
TL;DR: In this article, an atmospheric-based deposition process for Cu(In,Ga)Se2 synthesis is presented, consisting of the electrodeposition of a Cu-In-Ga mixed oxide/hydroxide layer from an aqueous solution, at room temperature, followed by a thermochemical reduction and selenization.
55 citations
TL;DR: In this article, the catalytic deep oxidation of methane over perovskite-type mixed oxide catalysts was examined, and three groups of mixed oxides (i) La1−yCeyFeO3 (0.0,y≤ 0.5), (ii) La 1−xSrxFeOO3(0.5,y ≥ 0.3), containing La, Sr, Ce, Fe cations in various ratios were prepared and characterized by XRD, Mossbauer spectroscopy and O2-TPD measurements.
Abstract: The catalytic deep oxidation of methane over perovskite-type mixed oxide catalysts is examined. Three groups of mixed oxides (i) La1−yCeyFeO3 (0.0
55 citations