Low-Cost Nanopowders for Phosphor and Laser Applications by Flame Spray Pyrolysis

Laine, Richrad M.; Hinklin, T.; Williams, D. Bradley G.; Rand, Stephen C.

doi:10.4028/www.scientific.net/jmnm.8.500

Cited by 21 publications

(26 citation statements)

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“…Using organic solvents as liquid fuel, leads to a selfsustaining spray flame. This process has the potential to produce composite mixed-metal oxide powders in the size range of 1 to 200 nm from low cost precursors [90] with production rates up to 250 g/h, as was summarized recently by Laine et al [19,91]. Typical products synthesized are titania [92] and MgAl 2 O 4 [93], gamma-Fe 2 O 3 [94], alumina [93], manganese oxide, zirconia, and zirconia-ceria [87, 95±97] particles, or very specific functional particles such as beta¢¢-alumina for high temperature solid electrolytes [98,99], to name a few.…”

Section: Nanoparticles By Combustion Of Liquid Dropletsmentioning

confidence: 99%

“…An elegant way for manufacture of mixed metal precursors was performed by the implementation of the stoichiometric preset of the desired metals into an organic complex [90]. This concept was successfully applied in production of mullite nanoparticles [91] from alkoxide complexes. In another example, BaTiO 3 was synthesized from organometallic precursors, where the precursor preparation from ethanol, TTIP and barium-II-ethyl-hexanoate first formed a Ba-Ti alkoxide [108], which was then introduced into our self-sustaining spray flame reactor.…”

Section: Precursor Liquid Compositionmentioning

confidence: 99%

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Flame Synthesis of Nanoparticles

Kammler

Mädler

Pratsinis³

2001

Chem. Eng. Technol.

394

208

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An overview of recent advances in the synthesis of nanoparticles by flame aerosol processes is given. In flame processes with gaseous precursors emphasis is placed on reactant mixing and composition, additives, and external electric fields for control of product characteristics. Thermophoretic sampling can monitor the formation and growth of nanoparticles, while the corresponding temperature history can be obtained by non-intrusive Fourier transform infrared spectroscopy. Furthermore, synthesis of composite nanoparticles for various applications is addressed such as in reinforcement or catalysis as well as for scale-up from 1 to 700 g/h of silica-carbon nanostructured particles. In flame processes with liquid precursors using the so-called flame spray pyrolysis (FSP), emphasis is placed on reactant and fuel composition. The FSP processes are quite attractive as they can employ a wide array of precursors, so a broad spectrum of new nanosized powders can be synthesized. Computational fluid dynamics (CFD) in combination with gas-phase particle formation models offer unique possibilities for improvement and possible new designs for flame reactors.

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Section: Nanoparticles By Combustion Of Liquid Dropletsmentioning

confidence: 99%

Section: Precursor Liquid Compositionmentioning

confidence: 99%

Flame Synthesis of Nanoparticles

Kammler

Mädler

Pratsinis³

2001

Chem. Eng. Technol.

394

208

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“…A number of materials have already been made by FSP from pure ZnO (Marshall et al, 1971) and Al 2 O 3 (Sokolowski et al, 1977) to more complex mixed oxides and spinels (Laine et al, 1999(Laine et al, , 2000 and even mixed noble metal-ceramic catalysts (Strobel et al, 2003). Although some systematic studies on the role of process parameters on the characteristics of product particles have been carried out and even scale-up of FSP has been addressed (Mueller et al, , 2004a, this promising technique has been treated as a "black" box so far, relating input parameters to product powder characteristics.…”

Section: Introductionmentioning

confidence: 99%

Growth of zirconia particles made by flame spray pyrolysis

Mueller¹,

Jossen²,

Kammler³

et al. 2004

AIChE Journal

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The growth of ZrO 2 particles in spray flames is studied at production rates of 100 and 300 g/h by thermophoretic sampling (TS) and image analysis of transmission electron microscope (TEM) micrographs. At each TS location, the corresponding temperature of the particle-laden spray flame is measured along the centerline by Fourier transform infrared (FTIR) spectroscopy. The product powder is analyzed by nitrogen adsorption and TEM. The measured evolution of primary particle size distribution is presented and

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“…Flame spray pyrolysis (FSP) was used to prepare two kinds of sample for this study [1]. The first was d-Al 2 O 3 doped with 1000 ppm Ce 3+ .…”

Section: Experimental Methodsmentioning

confidence: 99%