Synthesis and composition modification of precipitate tubes in a confined flow reactor

Bene, Kinga; Balog, Edina; Schuszter, Gábor

doi:10.1039/d3cp03467d

Cited by 2 publications

(1 citation statement)

References 28 publications

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“…By the external control of these gradients, the micro-and macrostructure of the forming products (e.g., morphology, crystal size, composition, tube diameter) can be influenced 10,11 . For example, by changing the experimental parameters (e.g., reactant concentrations, stoichiometric ratio, flow rate), the dynamic behavior of the systems can be altered, which makes the production of arbitrary structures feasible 12 . Furthermore, by using flow-driven systems, precipitate tubes with different internal and external microstructures can be yielded, which supports injection methods 13 .…”

Section: Introductionmentioning

confidence: 99%

Synthesis of metal-organic framework functionalized macroscopic flow-through precipitate tubes

Balog,

Bene,

Schuszter

2024

Preprint

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The guided growth and the composition control of the well-known chemical garden tubular structures has been widely studied in the literature. However, the applicability of these macroscopic hollow precipitate tubes (e.g., catalysis, sensorics, etc.) is limited, since these pipes do not have a flow-through character originally, thus the functionalization of these tubes is difficult to implement. In this work, our goal was to design a novel reactor that enables the production of these flow-through precipitate pipes with robust junctions, and thus their functionalization for further applications. We successfully built the reactor and synthesized such pipes. Their flow-through character was proven in case of various template tubes which were produced by injecting one of the reactant solutions into another in three dimensions. After the production of the template tubes, we attempted to decorate the surface with ZIF-8 crystals, which have a great interest in the literature thanks to the beneficial properties (porous structure, huge specific surface, etc.). The surface functionalization was carried out by properly exchanging the reactant solutions inside and outside the template precipitate tubes. Due to the semi-permeable nature of the tube wall, the reactants could diffuse through the membrane and react with each other. This way we successfully produced ZIF-8 crystals on the inner tube surface and thus gave a useful feature to it.

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Section: Introductionmentioning

confidence: 99%

Synthesis of metal-organic framework functionalized macroscopic flow-through precipitate tubes

Balog,

Bene,

Schuszter

2024

Preprint

View full text Add to dashboard Cite

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Transport‐Limited Growth of Flow‐Driven Rare‐Earth Silicate Tubes

Farkas,

Lantos,

Horváth

et al. 2024

ChemSystemsChem

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The injection of rare‐earth metal salt solutions into sodium silicate solution results in vertically growing tubular precipitate structures. At low input concentrations reaction kinetics is the rate‐detemining process, leading to linear growth rates independent of injection rates. At higher concentrations, flow drives the precipitate growth, characterized by jetting mechanism. Among the studied rare‐earth metal silicates, dysprosium silicate is found to have the most rigid structure with visible growth even at higher injection rates. The outer surface of the hollow tubes is smooth, on which rare‐earth hydroxide – based on the result of the energy dispersive X‐ray spectroscopy measurements – aggregates into globules.

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Synthesis and composition modification of precipitate tubes in a confined flow reactor

Abstract: Precipitation reactions coupled to various transport phenomena, such as flow or diffusion, lead to the formation of different spatial gradients which can be influenced by tuning the experimental parameters (e.g.,...

Cited by 2 publications

References 28 publications

Synthesis of metal-organic framework functionalized macroscopic flow-through precipitate tubes

Synthesis of metal-organic framework functionalized macroscopic flow-through precipitate tubes

Transport‐Limited Growth of Flow‐Driven Rare‐Earth Silicate Tubes

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