Oxidative regeneration study of spent V2O5 catalyst from sulfuric acid manufacture

Vo, Phuong Nguyen Xuan; Le-Phuc, Nguyen; Tran, Tri Van; Ngo, Phuong Thuy; Luong, Thuy Ngoc

doi:10.1007/s11144-018-1442-9

Cited by 6 publications

(3 citation statements)

References 22 publications

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“…In turn, the CuO, V 2 O 5 and Ta 2 O 5 oxides, which are the components of the system selected for the study, belong to an interesting class of compounds, both in terms of their crystal structure and physicochemical properties. These oxides, due to their electrical and optical properties, are commercially important materials that are used in optoelectronic devices, energy conversion and as catalysts or photocatalysts [ 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 ]. Copper (II) oxide is used to obtain optical switches, field emission devices, lithium-ion electrode materials, gas sensors, biosensors and magnetic data carriers [ 1 , 2 , 3 , 4 ].…”

Section: Introductionmentioning

confidence: 99%

“…Copper (II) oxide is used to obtain optical switches, field emission devices, lithium-ion electrode materials, gas sensors, biosensors and magnetic data carriers [ 1 , 2 , 3 , 4 ]. The applications of vanadium (V) oxide include catalytic processes and the production of field-effect transistors, gas sensors, infrared detectors, glass dyes [ 5 , 6 , 7 , 8 , 9 , 10 ]. Tantalum (V) oxide, due to its high dielectric constant, is used in the production of semiconductors used in DRAM memories, high-frequency CMOS integrated circuits and flash memories [ 11 , 12 ].…”

Section: Introductionmentioning

confidence: 99%

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New Solid Solution and Phase Equilibria in the Subsolidus Area of the Three-Component CuO–V2O5–Ta2O5 Oxide System

2021

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The results of the study of the three-component system of CuO–V2O5–Ta2O5 oxides showed, inter alia, that in the air atmosphere in one of its cross-sections, i.e., in the CuV2O6–CuTa2O6 system, a new substitutional solid solution with the general formula CuTa2−xVxO6 and homogeneity range for x > 0.0 and x ≤ 0.3 is formed. The influence of the degree of incorporation of V5+ ions into the CuTa2O6 crystal lattice in place of Ta5+ ions on the unit cell volume, thermal stability and IR spectra of the obtained solid solution was determined. Moreover, the value of the band gap energy of the CuTa2−xVxO6 solid solution was estimated in the range of 0.0 < x ≤ 0.3, and on this basis, the new solid solution was classified as a semiconductor. On the basis of the research results, the studied system of CuO–V2O5–Ta2O5 oxides was also divided into 12 subsidiary subsystems.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

New Solid Solution and Phase Equilibria in the Subsolidus Area of the Three-Component CuO–V2O5–Ta2O5 Oxide System

2021

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“…The methods currently applied to utilize spent catalysts comprise landfilling, rejuvenation/regeneration, metal (bio)recovery, cement-based stabilization, and utilization in refineries ( [10] and Ref. therein, [11]).…”

Section: Introductionmentioning

confidence: 99%

Vanadium removal from spent sulfuric acid plant catalyst using citric acid and Acidithiobacillus thiooxidans

Mikoda

Potysz

Kucha

et al. 2020

Archiv.Civ.Mech.Eng

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Spent catalysts being considered hazardous wastes exhibit a high metal content in mobile forms. In addition, growing demand for circular economy policy applications requires proper utilization of these wastes. This study aimed at the assessment of vanadium leaching from spent desulfurization catalyst derived from sulfuric acid plant dump located nearby a copper smelter. Chemical and phase composition of the catalyst has been characterized. The extraction has been performed using chemical (0.1-M and 1-M citric acid) and biological (biotic solution with Acidithiobacillus thiooxidans) methods, using different experimental parameters (pulp density, particle size, leaching time) to observe V leaching behavior and kinetics. The results revealed that both citric acid and bacteria carried out the extraction process well. The optimal parameters for acid leaching were < 0.2-mm particle size and 2% pulp density, which allowed to leach out 95% of V from spent catalyst within 48 h. The bacterially mediated extraction resulted in 93% V leached out within 21 days with 2% pulp density. The experiments showed that V present in the catalyst is susceptible to bioleaching and organic acid leaching with the latter being a quicker process.

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Construction of a Parallel Algorithm for the Numerical Modeling of Coke Sediments Burning from the Spherical Catalyst Grain

Yazovtseva

Grishaeva

Gubaydullin

et al. 2022

Communications in Computer and Information Science

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Oxidative regeneration study of spent V2O5 catalyst from sulfuric acid manufacture

Cited by 6 publications

References 22 publications

New Solid Solution and Phase Equilibria in the Subsolidus Area of the Three-Component CuO–V2O5–Ta2O5 Oxide System

New Solid Solution and Phase Equilibria in the Subsolidus Area of the Three-Component CuO–V2O5–Ta2O5 Oxide System

Vanadium removal from spent sulfuric acid plant catalyst using citric acid and Acidithiobacillus thiooxidans

Construction of a Parallel Algorithm for the Numerical Modeling of Coke Sediments Burning from the Spherical Catalyst Grain

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