Chemical modification in and on single phase 0.50.5 nanopowders produces “chocolate chip‐like” Nix@0.5‐x0.5 nanocomposite nanopowders

Phase‐pure [NiO]0.5[Al2O3]0.5 spinel nanoparticles (NPs) with limited aggregation were obtained via liquid‐feed flame spray pyrolysis (LF‐FSP) by combusting metalloorganic precursor solutions. Thereafter “chocolate chip‐like” Nix[NiO0.5‐x][Al2O3]0.5 nanoparticles consisting of primary [NiO0.5‐x][Al2...

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Published in:Journal of the American Ceramic Society 2019-12, Vol.102 (12), p.7145-7153
Main Authors: Wang, Fei, Sun, Kai, Eongyu Yi, Laine, Richard M
Format: Article
Language:English
Subjects:
Agglomeration
Aluminum oxide
Carbon nanotubes
Catalysts
Chemical synthesis
Chocolate
Fluidized bed reactors
Fluidized beds
Heat treating
High temperature
Metal particles
Nanocomposites
Nanoparticles
Nickel
Organic chemistry
Oxidation
Spinel
Spray pyrolysis
Thin films
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creator Wang, Fei
Sun, Kai
Eongyu Yi
Laine, Richard M
description Phase‐pure [NiO]0.5[Al2O3]0.5 spinel nanoparticles (NPs) with limited aggregation were obtained via liquid‐feed flame spray pyrolysis (LF‐FSP) by combusting metalloorganic precursor solutions. Thereafter “chocolate chip‐like” Nix[NiO0.5‐x][Al2O3]0.5 nanoparticles consisting of primary [NiO0.5‐x][Al2O3]0.5 particles with average particle sizes of 40‐60 nm decorated with Ni metal particles (
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Thereafter “chocolate chip‐like” Nix[NiO0.5‐x][Al2O3]0.5 nanoparticles consisting of primary [NiO0.5‐x][Al2O3]0.5 particles with average particle sizes of 40‐60 nm decorated with Ni metal particles (&lt;10 nm in diameter) dispersed on the surface were synthesized by heat treating the spinel NPs at 800°C/7 h in flowing 5% H2:N2 100 mL/min in a fluidized bed reactor. The synthesized materials were characterized using TEM, XRD, FTIR, and TGA/DTA. The Ni depleted areas consist primarily of γ‐Al2O3. The Ni content (800°C) was determined by TGA to be ≈11.3 wt.% based on TGA oxidation behavior. The successful synthesis of such nanocomposites with limited aggregation on a high temperature support provides a facile route to synthesize well‐defined NP catalysts. 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subjects Agglomeration
Aluminum oxide
Carbon nanotubes
Catalysts
Chemical synthesis
Chocolate
Fluidized bed reactors
Fluidized beds
Heat treating
High temperature
Metal particles
Nanocomposites
Nanoparticles
Nickel
Organic chemistry
Oxidation
Spinel
Spray pyrolysis
Thin films
title Chemical modification in and on single phase 0.50.5 nanopowders produces “chocolate chip‐like” Nix@0.5‐x0.5 nanocomposite nanopowders
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