Pyrochlore phase in the Bi2O3–Fe2O3–WO3–(H2O) system: Physicochemical and hydrodynamic aspects of its production using a microreactor with intensively swirled flows

Lomakin, M.S.; Проскурина, О. В.; Абиев, Р. Ш.; Leonov, A. A.; Неведомский, В. Н.; Voznesenskiy, S. S.; Gusarov, V. V.

doi:10.1016/j.apt.2023.104053

Cited by 6 publications

(1 citation statement)

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“…At the same time, the organization of such conditions that allow the reagents to be distributed at the molecular or ionic level with the necessary degree of uniformity of their distribution in micro-volumes is an obvious prerequisite for obtaining nanoparticles with specified characteristics. Previously, the possibility of synthesis of nanoscale particles of oxides and fluorides in microreactors with impinging jets [67][68][69][70] and in microreactors with intensely swirling flows [67,[71][72][73][74] was experimentally proved. The influence of specific energy dissipation rate on micromixing quality was demonstrated experimentally by means of iodide-iodate method widely used for microreactors with ultimate level of micromixing [74].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of strontium fluoride nanoparticles in a microreactor with intensely swirling flows

Abiev,

Zdravkov,

Kudryashova

et al. 2024

Nanosystems: Phys. Chem. Math.

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The technique of micromixing was used for synthesis of SrF 2 nanopowders in a microreactor with intensely swirling flows. The chemical reaction between aqueous solutions of strontium nitrate (C(Sr(NO 3 ) 2 ) = 0.15 -0.45 M) and potassium fluoride (C(KF) = 0.3 -0.9 M) was realized in a microreactor with intensely swirling flows with reagent consumption 1.5 -3.5 L/min. Colloidal solutions were obtained, during the settling of which SrF 2 powders were isolated without crystallographic faceting. An increase in the rate of reagent flow has negligible effect on the size of coherent scattering regions D, while an increase in the concentration of solutions leads to an increase in D from ∼ 20 to ∼ 30 nm. KEYWORDS strontium fluoride, precipitation, chemical reaction, micromixing ACKNOWLEDGEMENTS This work was done as a part of State assignment of the Institute of Silicate Chemistry (Project No.

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