Metal-organic framework derived vanadium-doped TiO2@carbon …
Herein, we demonstrate a facile strategy to enhance the sodium storage performance of TiO 2 via vanadium (V) doping, using the pre-synthesized V-doped Ti …Web
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Herein, we demonstrate a facile strategy to enhance the sodium storage performance of TiO 2 via vanadium (V) doping, using the pre-synthesized V-doped Ti …Web
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However, the blast furnace process could only effectively extract iron and vanadium [7,8]. In addition, the distribution of various fine-grained mineral phases in the titanium-rich slag (22– 25% TiO 2) resulted in almost all of the titanium being ineffectively utilized [[9], [10], [11]]. Hence, it is necessary to develop a novel ...Web
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Vanadium titano-magnetite is an important iron ore resource containing iron, vanadium and titanium. Although iron and vanadium can be recovered by the traditional blast furnace process, titanium can only be stored in the form of TiO2 bearing slag, which resulting in a great waste of titanium resources.Web
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Selective catalytic reduction technology using NH3 as a reducing agent (NH3-SCR) is an effective control method to remove nitrogen oxides. TiO2-supported vanadium oxide catalysts with different levels of Ce and Sb modification were prepared by an impregnation method and were characterized by X-ray diffractometer (XRD), Brunauer …Web
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Abstract. The lack of stability is a challenge for most heterogeneous catalysts. During operations, the agglomeration of particles may block the active sites of the catalyst, which is believed to contribute to its instability. Recently, titanium oxide (TiO 2) was introduced as an alternative support material for heterogeneous catalyst due to ...Web
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To improve the photocatalytic degradation properties of titanium dioxide (TiO 2) used as raw materials for purifying automobile exhaust (AE), the vanadium (V)–doped TiO 2 samples were prepared. The photocatalytic degradation efficiencies of V-doped TiO 2 to each component in AE were evaluated under ultraviolet (UV) and visible light ...Web
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In this study, Ag_TiO 2, V_TiO 2 and different samples of silver-, vanadium-codoped TiO 2 are reported for stabilizing the doped structure, inducing the visible light …Web
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The reduction behaviors of vanadium‑titanium magnetite with H 2 via a fluidized bed were experimentally studied. The effects of reduction temperature, H 2 concentration, reduction time and gas flow rate on metallization degree of the reduced samples were also investigated. The major conclusions were summarized as follows: (1) …Web
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In this work, we use an inorganic titanium precursor (titanium oxysulfate, TiOSO4) for the preparation of doped TiO2 by the sol–gel method. Molybdenum (Mo), iron (Fe) and vanadium (V) in the concentration range of 0.0312–2.0 mol% are added as dopants. The prepared samples were characterized by XRD, FTIR, N2 isotherms, …Web
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Vanadium titano- magnetites (VTM) are found throughout the world with huge reserves [3]. The TiO2 grade in the VTM concentrates is varied with the deposits, from 1 …Web
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Vanadium titanium magnetite was used in the experiments from Panzhihua, China. The mineralogical composition of the ore is shown in Table 1, the macroscopic morphol- ... TiO2 were roasted at 1000 C for 2 h under argon protection, the CO2 or H2O likely present in the reagents were removed to reduce the experimental errors.Web
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Doping of TiO 2 with very small amount of vanadium (0.02VTiO 2) resulted in a shift of oxidation waves from 370 and 617 mV to 357 and 613 mV, respectively. This …Web
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Introduction. There is abundant vanadium titanomagnetite (VTM) throughout the world, and it contains plentiful valuable elements [1], [2]. Hongge VTM (HVTM), deposited in the Panzhihua-Xichang area (Sichuan, China), is one of the largest VTM resources, it is not only rich in valuable elements including iron, titanium, and …Web
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Download Citation | Viscosity of CaO–SiO2–Al2O3–MgO–TiO2–FeO Slag in HIsmelt Process: Influence of TiO2 Content on Viscosity and Crystallization | Vanadium–titanium magnetite is a ...Web
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The mechanism of promotion of vanadium (V) oxide catalysts by titanium (IV) oxide (anatase, brookite and rutile) has been investigated by a variety of physicochemical techniques with particular…. Expand. 64. Heterogeneous photocatalytic decomposition of saturated carboxylic acids on titanium dioxide powder.Web
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Titanium has unique good mechanical and physical properties and is widely used in turbine components, such as high tension, low density, strong corrosion resistance, and good welding capacity.5–10 The vanadium alloys especially V–Ti–Cr–Fe-series alloys have a good hydrogen storage properties, and have a wide range of applications in ...Web
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Vanadium dioxide (VO2) is a Mott phase transition compound that can be applied as a thermochromic smart material for energy saving and comfort, and titanium dioxide (TiO2) is a well-known photocatalyst for self-cleaning coatings. In this paper, we report a VO2@TiO2 core-shell structure, in which the …Web
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Section snippets Mineral processing waste. A sample produced within a Brazilian mineral processing operation, associated with V 2 O 5 production, was received to design a pyrometallurgical process to exploit the content of titanium. After sampling in a Jones Riffle Splitter and moisture drying, the size distribution was evaluated. It was …Web
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Titanium dioxide, TiO 2. Titanium dioxide (TiO 2) is a naturally occurring oxide of titanium. It possesses a high refractive index, making it an important material in optical coatings and components, especially as a white pigment in paints, cosmetics, and sunscreens due to its UV absorbing properties. The two main crystal forms used in …Web
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Aiming at the process of smelting ultra-high (>80%) or even full vanadium titanomagnetite in blast furnace, we are conducting a series of works on physics character of high TiO2 bearing blast furnace slag (BFS) for slag optimization. This work discussed the density and surface tension of high TiO2 bearing BFS using the Archimedean principle …Web
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A facile and environmentally friendly synthesis approach for the production of vanadium doped titanium dioxide (V x Ti 1−x O 2) nanostructures was demonstrated via hydrothermal decomposition of vanadium and …Web
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2.1. Materials. The raw materials used in the sintering pot test including LVTM, high titanium iron ore powder (HT ore), ordinary iron ore (Indian ore, Malaysian ore, Zirong ore), dolomite, gas ash, vanadium extraction tailings (V tailings), quicklime, and coke were purchased from the Jianlong Iron and Steel Co. Ltd. (Chengde, China).Web
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Currently, the most commonly used form of titanium is TiO 2 powder. As the production of TiO 2 powder continues to expand, there has been an increase in concern of its influence on human and environment ... In 1993, Haynes et al. performed experiments using titanium-aluminum-vanadium (Ti-Al-V) and cobalt-chromium (Co-Cr) particles of …Web
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Figure 3 shows the XRD analyses of the TiO 2 and as-synthesized undoped and V-doped titanium dioxide nanotubes. In the undoped titanium dioxide nanotubes, the main diffraction peaks are observed at 24.24°, 28.36°, and 48.28°. All the diffraction peaks in the patterns of the nanotube well matched the diffraction peaks of anatase titanium …Web
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Optimized doped TiO2 is necessary for efficient visible light harvesting and widening the applications spectrum of TiO2-based materials. Titanium dioxide doped with silver and/or vanadium has been synthesized by one-pot hydrothermal method without post-calcination. Codoping induced visible light absorption while maintaining the …Web
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2.1. Materials. In this experiment, vanadium-titanium magnetite concentrate from Wuling, Xinjiang was used as raw material, and its chemical composition is depicted in Table 1.It can be observed from Table 1 that the main valuable elements in the raw iron concentrate are Fe, V and Ti, with the mass fractions of TFe, TiO 2 and V 2 O 5 are high …Web
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The results indicated that titanium ions and oxygen atoms in TiO2 were successfully substituted by vanadium ions and nitrogen atoms, respectively. ... visible light has been investigated using ...Web
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The viscous flow of CaO–SiO 2 –Al 2 O 3 –MgO–TiO 2 –Cr 2 O 3 slag (CaO/SiO 2 = 1.1, Cr 2 O 3 = 0.5 mass%) were investigated to promote understanding of the effect of TiO 2 addition on the viscous behavior of chromium-containing vanadium-titanium blast furnace slag. The viscosity of the slag was measured using a rotating crucible …Web
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High-chromium vanadium-titanium magnetite (HCVTM) in the Hongge region has been used as an essential mineral resource in ironmaking. ... With the increasing TiO2 contents in the range of 2.47 to ...Web
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Titanium dioxide (TiO 2) as a potential anode material for sodium-ion batteries (SIBs) suffers from the intrinsic poor electronic conductivity and sluggish ionic diffusivity, thus usually leading to the inferior electrochemical performance.Herein, we demonstrate a facile strategy to enhance the sodium storage performance of TiO 2 via …Web
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Reduction roasting with sodium sulfate followed by magnetic separation was investigated to utilize vanadium tailings with total iron grade of 54.90 wt% and TiO2 content of 17.40 wt%. The results show that after reduction roasting–magnetic separation with sodium sulfate dosage of 2 wt% at roasting temperature of 1150 °C for roasting time of …Web
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The results were as follows: as the TiO2 content increased from 1.75% to 4.55%, the flame front speed and productivity decreased, while the reduction degradation index (RDI) and softening properties deteriorated. Low-grade vanadiferous titanomagnetite ore (LVTM) is as an important mineral resource for sintering ore manufacturing. …Web
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1. Introduction. Vanadium titano-magnetite is a major source of iron, vanadium, and titanium resources, with about 18 billion tonnes of reserves in China [[1], [2], [3]].Currently, there are various processes for the comprehensive utilization of vanadium titano-magnetite [4, 5].However, it is difficult to achieve efficient recovery of vanadium …Web
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In the iron and steel metallurgical industry, vanadium–titanium magnetite containing about 10.0 wt.% TiO 2 and 0.5 wt.% V 2 O 5 is a type of raw material used for iron ore sintering . In some enterprises, the mature process of extracting Ti from blast furnace smelting, and recovering V from converter smelting has been established by …Web
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Titanium dioxide is a chemical compound with a chemical formula of TiO 2. It is white in appearance with a density of 4.26 g/cc, a melting point of 1,830°C, and a vapor pressure of 10-4 Torr at ~1,300°C. The largest commercial application of titanium dioxide is as a white pigment for paint due to its brightness and high refractive index.Web
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Vanadium doping can widen the light absorption range of TiO2, and the absorption threshold wavelength is red shifted from 380 nm to about 650 nm. As a result, …Web
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