Lithium adsorption performance of a three-dimensional porous H<sub>2</sub>TiO<sub>3</sub>-type lithium ion-sieve in strong alkaline Bayer liquor

Xu, Xin; Zhou, You; Fan, Maohong; Lv, Zijian; Tang, Yang; Sun, Yanzhi; Chen, Yongmei; Wan, Pingyu

doi:10.1039/c7ra01056g

Cited by 44 publications

(17 citation statements)

References 40 publications

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“…Two categories of titanium oxide-type LIS are employed for adsorption purposes; H 2 TiO 3 with a layered structure [9] and H 4 Ti 5 O 12 with a spinel structure. [10] In the past few years, studies on large scale lithium-ion batteries have shown that Li 4 Ti 5 O 12 spinel is one of the most promising candidates for lithium storage applications.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Anodized TiO₂ Nanotube Arrays as Ion Sieve for Lithium Extraction

Taghvaei

Askari

2020

ChemistrySelect

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Titanium type lithium ion‐sieve nanotubes synthesized by the hydrothermal method were extensively explored over recent years due to its promising properties. However, on account of nanotubes′ tangled structure impeding the lithium adsorption in the interior nanotube walls, unalterable dimensions of the synthesized nanotubes, and a long period of annealing, the anodizing technique was proposed. It is shown that lithium uptake and adsorption capacity is improved because of easier mass transfer during the ion exchange process. This work focuses on a novel anodizing method for nanotube ion‐sieve synthesis. The optimum anodizing condition was discovered by altering anodizing voltage, time, and fluoride concentration to have a proper nanotube morphology and corresponding high surface area for achieving the most suitable adsorption properties. Nanotubes were grown on Ti foil in Ethylene Glycol (EG) electrolyte with different amounts of NH4F in a range of anodizing voltage (40–70 V) and time (1–4 hours). TiO2 Nanotube array morphology, dimension, and phase characterization were derived from FESEM and XRD analysis. As a result, the optimum condition discovered in this research to obtain acceptable morphology and high aspect ratio nanotubes was at 0.5 wt % NH4F, 40 V, 3 hours. Lithium titanate spinel with nanotube morphology was synthesized by chemical lithiation in the LiOH solution and then acid‐treated to obtain H4Ti5O12 adsorbent. ICP‐OES analysis revealed that the H4Ti5O12 lithium‐ion sieve with nanotube array structure obtain adsorption capacity up to 37.5 mg/g in LiOH and LiCl solutions (112 mg/L Li, pH 12), designating that the Hydrogen titanate (HTO) ion sieve could effectively extract Li+from the enriched solutions.

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Section: Introductionmentioning

confidence: 99%

Synthesis of Anodized TiO₂ Nanotube Arrays as Ion Sieve for Lithium Extraction

Taghvaei

Askari

2020

ChemistrySelect

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“…The diffraction peaks of (020), (002), (-131) crystal planes are shifted, and the diffraction peaks of (-131) and (-204) are widened. This indicates that the bonding mode of Li and H in the Ti-O layer is different, and after pickling the grain shrinks due to the ion exchange of H + with a smaller ionic radius and Li + with a larger ionic radius [31]. The lattice plane of (-133) formed by the insertion of Li + into the lattice of TiO 2 disappears after acid elution, while the diffraction peaks of (-206) and (062) are also absent, indicating the extraction of Li + from LTO-Am [32].…”

Section: Texture Properties Of Htomentioning

confidence: 99%

Amorphous TiO₂‐Derived Large‐Capacity Lithium Ion Sieve for Lithium Recovery

Chen

Chao

et al. 2020

Chem Eng & Technol

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The lithium titanium oxide ion sieve with good structural stability and high adsorption capacity is generally considered to be a promising adsorbent for lithium recovery. Herein, the lithium ion sieve precursor Li2TiO3 was prepared based on amorphous TiO2, and then Li+ was acid‐eluted to obtain the lithium adsorbent H2TiO3, denoted as HTO‐Am. The structure and adsorption properties of HTO‐Am were investigated, and the results demonstrated that the HTO‐Am prepared at the optimum temperature had excellent adsorption properties for Li+. The adsorption process follows pseudo‐second‐order kinetic and Langmuir isotherm equations, indicating that lithium is adsorbed chemically and monolayer on HTO‐Am. HTO‐Am ion sieves were prepared successfully for the first time and exhibited high selectivity, favorable adsorption rate, and cycle performance for Li+.

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“…Restidge et al [11] found that lithium ions can promote the precipitation and growth of ATH in extremely dilute liquor, some even co-precipitating with ATH. Vanstraten et al [12] found that lithium exists in the form of lithium-ion in dilute liquor and can react with Al(OH) 4 − to form LiA1 2 (OH) 7 •2H 2 O. Xu et al [13] found that a H 2 TiO 3 ion sieve has a good purification effect on lithium ions in Bayer liquor, which can remove lithium from liquor (56 mg/L to less than 1.0 mg/L). When Tang Wen-qi et al [14] synthesized highly active ATH to remove lithium from liquor with appropriate reaction conditions, the removal rate of lithium could reach 80.04%.…”

Section: Introductionmentioning

confidence: 99%

Leaching Behavior of Lithium-Bearing Bauxite with High-Temperature Bayer Digestion Process in K2O-Al2O3-H2O System

Han

Peng

Song

et al. 2021

Metals

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Lithium is one of the secondary mineral elements occurring in bauxite. The behavior of lithium-bearing bauxite in the digestion process was investigated, and the effect of digestion conditions on the extraction rates of lithium was studied. The results demonstrate that the mass ratio of the added CaO to bauxite, the KOH concentration, and the digestion temperature had a significant effect on the lithium extraction efficiency. An L9(34) orthogonal experiment demonstrated that the order of each factor for lithium extraction from primary to secondary is lime dosage, caustic concentration, and reaction temperature. Under the optimal conditions (t = 60 min, T = 260 °C, ρ(K2O) = 280 g/L, and 16% lime dosage), the leaching efficiencies of lithium and alumina are 85.6% and 80.09%, respectively, with about 15% of lithium entering into red mud. The findings of this study maybe useful for controlling lithium content in alumina products and lithium recovery from the Bayer process.

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Lithium adsorption performance of a three-dimensional porous H₂TiO₃-type lithium ion-sieve in strong alkaline Bayer liquor

Abstract: A three-dimensional porous H2TiO3-type lithium ion-sieve prepared by polystyrene colloidal microspheres template was applied to selectively adsorb Li+ ions from the strong alkaline Bayer liquor.

Cited by 44 publications

References 40 publications

Synthesis of Anodized TiO₂ Nanotube Arrays as Ion Sieve for Lithium Extraction

Synthesis of Anodized TiO₂ Nanotube Arrays as Ion Sieve for Lithium Extraction

Amorphous TiO₂‐Derived Large‐Capacity Lithium Ion Sieve for Lithium Recovery

Leaching Behavior of Lithium-Bearing Bauxite with High-Temperature Bayer Digestion Process in K2O-Al2O3-H2O System

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Lithium adsorption performance of a three-dimensional porous H2TiO3-type lithium ion-sieve in strong alkaline Bayer liquor

Abstract: A three-dimensional porous H2TiO3-type lithium ion-sieve prepared by polystyrene colloidal microspheres template was applied to selectively adsorb Li+ ions from the strong alkaline Bayer liquor.

Cited by 44 publications

References 40 publications

Synthesis of Anodized TiO2 Nanotube Arrays as Ion Sieve for Lithium Extraction

Synthesis of Anodized TiO2 Nanotube Arrays as Ion Sieve for Lithium Extraction

Amorphous TiO2‐Derived Large‐Capacity Lithium Ion Sieve for Lithium Recovery

Leaching Behavior of Lithium-Bearing Bauxite with High-Temperature Bayer Digestion Process in K2O-Al2O3-H2O System

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Lithium adsorption performance of a three-dimensional porous H₂TiO₃-type lithium ion-sieve in strong alkaline Bayer liquor

Synthesis of Anodized TiO₂ Nanotube Arrays as Ion Sieve for Lithium Extraction

Synthesis of Anodized TiO₂ Nanotube Arrays as Ion Sieve for Lithium Extraction

Amorphous TiO₂‐Derived Large‐Capacity Lithium Ion Sieve for Lithium Recovery