Preparation of nano-sized calcium carbonate in solution mixing process

Yang, Aimei; Huang, Zhen; Zhu, Yong; Han, Ya-jie; Tong, Zhangfa

doi:10.1016/j.jcrysgro.2021.126247

Cited by 13 publications

(15 citation statements)

References 44 publications

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“…This study is in agreement with the previous literature. 18 The result proved that the burning method made HA-NCC at 700 °C become white NCC when HA was released in a gaseous state to improve CaCO 3 dispersion.…”

Section: Resultsmentioning

confidence: 84%

“…The uniform distribution, good dispersion, high whiteness, and purity of NCC particles can be easily controlled based on the double decomposition method. 18,23…”

Section: Introductionmentioning

confidence: 99%

“…3,7,15,16 Two approaches are commonly used in the preparation of NCC: the carbonation method and the double decomposition method. [17][18][19] The carbonation process involves the bubbling of CO 2 gas through the solution of Ca(OH) 2 . 19,20 The carbonation method has the advantages of simple operation, eco-friendly procedure, and easy large-scale industrial production.…”

Section: Introductionmentioning

confidence: 99%

“…19 It makes the grains nucleate and grows in a small area and then the crystalloid separates from the solvent to formulate CaCO 3 particles. 18,24 NCC crystal, morphology, and particle size could be well controlled in the liquidliquid reaction. The uniform distribution, good dispersion, high whiteness, and purity of NCC particles can be easily controlled based on the double decomposition method.…”

Section: Introductionmentioning

confidence: 99%

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Macroscale preparation of nanosized calcium carbonate by exploiting biogas slurry synchronous metathesis encapsulation method

et al. 2023

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Section: Resultsmentioning

confidence: 84%

“…The uniform distribution, good dispersion, high whiteness, and purity of NCC particles can be easily controlled based on the double decomposition method. 18,23…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Macroscale preparation of nanosized calcium carbonate by exploiting biogas slurry synchronous metathesis encapsulation method

et al. 2023

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“…The formation of nanochains strongly depended on pH, with high pH aggregates forming chains and low pH fibers breaking. 30,34,35 As described earlier, aggregates were broken after the removal of Ca(OH) 2 by deionized water washing. Ca(OH) 2 plays a role like ionic glue.…”

Section: Stage 1: Assembly Of Nanochains To Form Amentioning

confidence: 99%

Nonclassical and Classical Crystallization: The Formation of Spindle-Shaped CaCO₃ Covered with Abundant Nanoscale Rhombic Calcite Subunits

Sun

et al. 2023

Crystal Growth & Design

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As an essential inorganic material, calcium carbonate (CaCO 3 ) is one of the most abundant minerals in nature, whose preparation by the carbonation of calcium hydroxide [Ca(OH) 2 ] suspension involves complex physical and chemical processes due to the presence of gas−solid−liquid phases. It is challenging to accurately predict the final morphology of CaCO 3 . In this paper, a novel spindleshaped CaCO 3 covered with a mass of nanoscale rhombic calcite subunits was prepared via the carbonation method. This structure was mainly formed by the aggregation of nanoparticles in the pre-reaction stage and turned into a classical ion− ion growth process at the stage of the late reaction. During the pre-reaction period, solid Ca(OH) 2 kept the solution supersaturated and made the aggregation of nanoparticles dominate and assemble to form the nanochains of CaCO 3 . Subsequently, the aggregation of nanochains formed a dumbbell shape, which was accompanied by the recrystallization of nanoparticles inside aggregates to create an ordered single-crystal spindle structure. Finally, the concentration of Ca(OH) 2 decreased, and a layer of nanoscale rhombic calcite subunits grew on the surface of spindle CaCO 3 . This work will provide new insights into the industrial preparation of CaCO 3 with controlled morphology and contribute to understanding the biomineralization of aggregation-based growth in aqueous solutions.

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Optimization of calcium carbide residue utilization for producing high‐quality calcium carbonate

Yang,

Li,

Xun

et al. 2023

Greenhouse Gases

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In light of the current situation where the utilization of calcium carbide slag yields low profits but holds significant potential for reducing carbon emissions, ammonium acetate was employed to leach calcium carbide slag. It also played a crucial role in regulating the products of indirect carbon dioxide carbonation when mixed with glycine and lye. Ammonium acetate's significance underscores its dual role in both the leaching and carbonation processes. This process yielded calcium carbonate with particle sizes smaller than 100 nm, with a purity of 98% and a single vaterite phase. The calcium carbide residue demonstrated an impressive CO2 uptake rate of 23.5%. Ammonium acetate exhibited an efficiency of 79.2% as a leaching agent. The ammonium acetate method demonstrated enhanced environmental friendliness and facilitated a more efficient carbon uptake rate of 23.5% compared to conventional indirect methods. Furthermore, the addition of lye, glycine, and ammonium acetate effectively extended the nucleation time of the calcium carbonate crystals and induced the formation of more vaterite intermediates with smaller particle sizes. The influence mechanism of compound additives on the carbonation reaction was revealed through kinetic analysis and molecular dynamics. This innovative approach offers a promising avenue for simultaneously treating solid waste and reducing CO2 emission. © 2023 Society of Chemical Industry and John Wiley & Sons, Ltd.

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Preparation of nano-sized calcium carbonate in solution mixing process

Cited by 13 publications

References 44 publications

Macroscale preparation of nanosized calcium carbonate by exploiting biogas slurry synchronous metathesis encapsulation method

Macroscale preparation of nanosized calcium carbonate by exploiting biogas slurry synchronous metathesis encapsulation method

Nonclassical and Classical Crystallization: The Formation of Spindle-Shaped CaCO₃ Covered with Abundant Nanoscale Rhombic Calcite Subunits

Optimization of calcium carbide residue utilization for producing high‐quality calcium carbonate

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Preparation of nano-sized calcium carbonate in solution mixing process

Cited by 13 publications

References 44 publications

Macroscale preparation of nanosized calcium carbonate by exploiting biogas slurry synchronous metathesis encapsulation method

Macroscale preparation of nanosized calcium carbonate by exploiting biogas slurry synchronous metathesis encapsulation method

Nonclassical and Classical Crystallization: The Formation of Spindle-Shaped CaCO3 Covered with Abundant Nanoscale Rhombic Calcite Subunits

Optimization of calcium carbide residue utilization for producing high‐quality calcium carbonate

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About

Nonclassical and Classical Crystallization: The Formation of Spindle-Shaped CaCO₃ Covered with Abundant Nanoscale Rhombic Calcite Subunits