Highly efficient synthesis of titanium phosphate precursor for electroactive materials

Маслова, М. В.; Mudruk, Natalia; Иваненко, В. И.; Герасимова, Л. Г.

doi:10.1016/j.ceramint.2021.10.004

Cited by 8 publications

(3 citation statements)

References 46 publications

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“…It can be seen that the crystal structure has changed significantly after calcination. The crystal structure of the titanium phosphate products ((TiO) 2 P 2 O 7 ) obtained by calcination has a smooth surface and is similar to the surface structure of titanium phosphate products synthesized by Maslova et al 51 Each particle is densely composed of many irregular flake structures, and there are many small pores on the surface, which may be caused by the evaporation of water inside the particle during the calcination process.…”

Section: Resultssupporting

confidence: 64%

“…It can be seen that the precipitation products have no obvious diffraction peak, indicating that it has no crystal form, and maybe a compound in the form of hydrated titanium phosphate. The XRD pattern of the precipitation products calcined at 900°C for 3 h 51 is shown in the red line of Figure 6d, which indicates that the calcined products are (TiO) 2 P 2 O 7 with good crystallinity. In recent years, titanium phosphates have aroused considerable interest as multi‐functional materials 52 .…”

Section: Resultsmentioning

confidence: 93%

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Extraction of valuable metals from acidic wastewater and blast furnace slag by a collaborative utilization process

Feng

2022

Asia-Pacific J Chem Eng

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Two typical wastes, acidic wastewater and titanium‐bearing blast furnace slag, are generated in the smelting process of vanadium‐titanium magnetite. Generally, the acidic wastewater is neutralized by lime or limestone and titanium‐bearing blast furnace slag is directly stacked in the tailings pond, which not only pollutes the ecological environment but also causes the waste of metal resources. In this study, a collaborative utilization process for efficient extraction of titanium, iron, magnesium, and aluminum from acidic wastewater and low titanium‐bearing blast furnace (LTBBF) slag was proposed. At the leaching temperature of 80°C, the leaching time of 50 min, and the liquid–solid ratio of 9:1, 99.26% Ti, 99.47% Mg, and 99.45% Al could be extracted from LTBBF slag by acidic wastewater. Leaching residue mainly composed of Ca and Si could be used as silicon fertilizer. The Ti in the leaching solution could be separated by adding Na3PO4. The precipitation efficiency of Ti reached 98.53% under the molar ratio of Na3PO4 to TiO2 of 1.4, reaction temperature of 85°C, and reaction time of 40 min. The titanium phosphate ((TiO)2P2O7) was obtained by calcination of the precipitate at 900°C for 3 h. Adding oxalic acid to the filtrate above, the precipitation efficiency of Fe, Mg, and Mn reached 96.47%, 99.21%, and 99.45%, respectively, under the optimal conditions, while the precipitation efficiency of Al was only .38%. By adjusting the pH of the filtrate to 6.5, 99.83% Al could be precipitated as Al(OH)3, and the final solution was evaporated to obtain Na2SO4 products. The method proposed realizes the harmless treatment of acidic wastewater and LTBBF slag and recovers the metal resources in both of them.

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Section: Resultssupporting

confidence: 64%

Section: Resultsmentioning

confidence: 93%

Extraction of valuable metals from acidic wastewater and blast furnace slag by a collaborative utilization process

Feng

2022

Asia-Pacific J Chem Eng

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“…In contrast to the current methods of α-TiP synthesis, which require rigid synthesis conditions and a high reagent consumption, the new synthesis lasted 5 h at stoichiometric reagent consumption and no special equipment was needed. Earlier, we showed that the heterogeneous interaction of milled TS with 50% phosphoric acid yields titanium phosphates of Ti(HPO 4 ) 2 ·H 2 O compositions for 3 h [ 43 ]. In this investigation, we found that freshly made TS could be used for synthesis without milling.…”

Section: Resultsmentioning

confidence: 99%

Synthesis of Sorption Materials from Low Grade Titanium Raw Materials

2022

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In this paper, a universal technology is proposed for processing low-titanium mineral raw material—apatite-nepheline ore waste, including its treatment with sulfuric or hydrochloric acid in a two-stage mode with a sequential increase in the concentration. This technique allowed us to remove nepheline and apatite in the first stage and achieve a titanium mineral content of TiO2 of more than 30%; in the second stage, we were able to convert the titanium into its precursors—titanyl sulfate monohydrate TiOSO4·H2O and a hybrid rutile-silica composition. The key stage in the sorbent synthesis is the reaction of the precursor with a phosphoric acid solution. The preferred sequence of operations begins with the mechanical activation of the precursor, causing morphological changes in it, and subsequent treatment with phosphoric acid at different concentrations under atmospheric conditions and in an autoclave, accompanied by phase transformations. Conditions for the chemical reactions which regulated the composition and structure of the final product and, accordingly, its sorption activity were found. With the help of XFA, the phase compositions of the sorbents were identified, including the individual crystalline phase α-TiP obtained from TS or the crystalline phase αTi(HPO4)2∙H2O, which is in an amorphous silica matrix obtained from a rutile–silica composition.

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Dyeability of Composite Based on Recycled Poly(ethylene Terephthalate) Filled with Pristine and Zinc/Silver-Modifying Titanium Phosphate

Garcia,

Albitres,

Freitas

et al. 2023

Fibers Polym

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Highly efficient synthesis of titanium phosphate precursor for electroactive materials

Cited by 8 publications

References 46 publications

Extraction of valuable metals from acidic wastewater and blast furnace slag by a collaborative utilization process

Extraction of valuable metals from acidic wastewater and blast furnace slag by a collaborative utilization process

Synthesis of Sorption Materials from Low Grade Titanium Raw Materials

Dyeability of Composite Based on Recycled Poly(ethylene Terephthalate) Filled with Pristine and Zinc/Silver-Modifying Titanium Phosphate

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