Chemical vapour synthesis and characterisation of Al2O3 nanopowders

Lukić, Saša; Stijepović, Ivan; Ognjanović, Stevan; Srdić, Vladimir V.

doi:10.1016/j.ceramint.2014.11.034

Cited by 13 publications

(5 citation statements)

References 38 publications

(47 reference statements)

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“…S3 †). 59 The TGA curve under air shows that the amount of Al 2 O 3 residues in the total material at 800 C is about 11.9 wt%, indicating a molar ratio of Al to DTPA of approximately 1 : 1 (Fig. S4 †).…”

Section: Synthesis and Characterization Of Al-dtpa Microbersmentioning

confidence: 99%

Al-coordination polymer-derived nanoporous nitrogen-doped carbon microfibers as metal-free catalysts for oxygen electroreduction and acetalization reactions

Han

Zhang

et al. 2015

J. Mater. Chem. A

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Section: Synthesis and Characterization Of Al-dtpa Microbersmentioning

confidence: 99%

Al-coordination polymer-derived nanoporous nitrogen-doped carbon microfibers as metal-free catalysts for oxygen electroreduction and acetalization reactions

Han

Zhang

et al. 2015

J. Mater. Chem. A

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“…S31-S37 nanopowders, which provides Al 2 O 3 nanopowders with highly hydroxylated surfaces and good dispersibility. Lukić et al [11] studied direct synthesis of transition alumina nanopowders in gas phase by a chemical reaction of precursor vapor (aluminum-tri-sec-butoxide) with oxygen.…”

Section: Introductionmentioning

confidence: 99%

Numerical simulation of flow field in chemical vapor reactor for nanoparticle synthesized

et al. 2020

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This paper provided a numerical simulation of fluid dynamics in the chemical vapor reactor for nanoparticle synthesis. Standard k-? turbulence equation and eddy-dissipation model with standard wall function were used to investigate the reaction process of turbulent diffusion for alumina production. Here the tempera?ture and the operating conditions are discussed. Numerical results show that the model can well describe synthesis of nanometer alumina. The chemical reactions for alumina by this reactor are mainly concentrated in the range of 200 mm after the nozzle. The materials are completely mixed after 400 mm in the reactor.

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“…17,18 However, without the assistance of catalysts or templates, it is very difficult to obtain hollow spheres by CVD process because of the homogenous nucleation mechanism of the pyrolysis products. 13-16 Al 2 O 3 particles could also be prepared by the CVD method, and the obtained products usually show less-agglomerated feature and narrower size distribution.…”

Section: Introductionmentioning

confidence: 99%

“…[13][14][15][16] Al 2 O 3 particles could also be prepared by the CVD method, and the obtained products usually show less-agglomerated feature and narrower size distribution. 17,18 However, without the assistance of catalysts or templates, it is very difficult to obtain hollow spheres by CVD process because of the homogenous nucleation mechanism of the pyrolysis products. To the best of our knowledge, there is no report for the synthesis of Al 2 O 3 hollow nanospheres by CVD process.…”

Section: Introductionmentioning

confidence: 99%

Al₂O₃ hollow nanospheres prepared by fluidized bed chemical vapor deposition and further heat treatment

et al. 2019

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Hollow‐structured Al2O3 nanospheres were prepared by chemical vapor deposition (CVD) and further heat‐treatment process. For the CVD process, a unique cooling gas loop was designed in the precursor delivery system and amorphous Al2O3 nanospheres with incomplete pyrolysis intermediated products were obtained in a vertical fluidized bed at 500℃. The microstructure of the nanospheres tended to hollow after subsequent heat treatment at 1300℃ in air. It was found that the obtained Al2O3 hollow nanospheres showed a size of 100‐450 nm in diameter and 20‐80 nm in shell thickness. Transmission electron microscopy (TEM) and X‐ray diffraction (XRD) analysis confirmed that the Al2O3 hollow nanospheres were α‐Al2O3. The possible formation mechanism was proposed based on the results of the thermal gravimetric (TG) measurement connected with a Fourier transform infrared spectrometry (FTIR). The novel method to prepare Al2O3 hollow nanospheres can inspire ideas for the design and synthesis of other hollow‐structured nanospheres.

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Chemical vapour synthesis and characterisation of Al2O3 nanopowders

Cited by 13 publications

References 38 publications

Al-coordination polymer-derived nanoporous nitrogen-doped carbon microfibers as metal-free catalysts for oxygen electroreduction and acetalization reactions

Al-coordination polymer-derived nanoporous nitrogen-doped carbon microfibers as metal-free catalysts for oxygen electroreduction and acetalization reactions

Numerical simulation of flow field in chemical vapor reactor for nanoparticle synthesized

Al₂O₃ hollow nanospheres prepared by fluidized bed chemical vapor deposition and further heat treatment

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Chemical vapour synthesis and characterisation of Al2O3 nanopowders

Cited by 13 publications

References 38 publications

Al-coordination polymer-derived nanoporous nitrogen-doped carbon microfibers as metal-free catalysts for oxygen electroreduction and acetalization reactions

Al-coordination polymer-derived nanoporous nitrogen-doped carbon microfibers as metal-free catalysts for oxygen electroreduction and acetalization reactions

Numerical simulation of flow field in chemical vapor reactor for nanoparticle synthesized

Al2O3 hollow nanospheres prepared by fluidized bed chemical vapor deposition and further heat treatment

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Product

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About

Al₂O₃ hollow nanospheres prepared by fluidized bed chemical vapor deposition and further heat treatment