The role of ferrocene in flame synthesis of silica

Fotou, George P.; Scott, Steven J.; Pratsinis, Sotiris E.

doi:10.1016/0010-2180(95)91706-6

Cited by 23 publications

(10 citation statements)

References 24 publications

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“…It is known that flame temperature, residence time, and precursor concentration are key variables that determine final particle size and phase composition of flame made powders (Ulrich, 1971;Formenti et al, 1972;Pratsinis, 1997). Besides, the presence of additives or dopants (Fotou et al, 1995; Correspondence concerning this article should be addressed to S. E. Pratsinis Vemury and Pratsinis, 1995a), electrical charging (Vemury and Pratsinis, 1995b), and reactant gas mixing can significantly affect the characteristics of the product powders. Doping, however, introduces undesirable impurities and charging adds cost to the products.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of SiO2 and SnO2 particles in diffusion flame reactors

Zhu

Pratsinis

1997

AIChE J.

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Section: Introductionmentioning

confidence: 99%

Synthesis of SiO2 and SnO2 particles in diffusion flame reactors

Zhu

Pratsinis

1997

AIChE J.

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“…(Xiong et al, 1992) Ferrocene was found to be an effective additive to decrease the primary particle size of silica particles by flame oxidation of SiCl 4 . (Fotou et al, 1995) Silica particles by flame synthesis were made smaller by applying electric fields. (Hardesty and Weinberg, 1973) The presence of a gaseous electric discharge (corona) in a flame synthesis of titania particles decreased the primary particle size and the rutile content.…”

Section: Additives and External Forcesmentioning

confidence: 99%

Control of Particle Morphology and Size in Vapor-Phase Synthesis of Titania, Silica and Alumina Nanoparticles

Park

2015

KONA

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Previous studies on vapor-phase synthesis of titania (TiO 2), silica (SiO 2), and alumina (Al 2 O 3) nanoparticles were reviewed. Interactions between physicochemical phenomena involved in the particle growth and the operating variables were investigated. Strategies to produce non-aggregated spherical particles of the metal oxides are discussed. Model predictions based on the sintering laws without any adjustments in the sintering parameters rarely agreed with experimental data. There remains more to be understood in reaction and nucleation kinetics, sintering, and fragmentation mechanisms until the technology is developed to the stage of designing reactors for mass production of non-aggregated spherical particles for titania, silica and alumina

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“…Regarding flame synthesis of silica, the role of ferrocene on product particle properties was investigated by Fotou et al [70]. The presence of ferrocene increased the specific surface area of silica up to 150% and removed the coarse tail of the silica aggregate size distribution.…”

Section: Control Of Particle Propertiesmentioning

confidence: 99%

Aerosol Flame Reactors for the Synthesis of Nanoparticles

Wegner

Pratsinis

2000

KONA

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This paper presents an overview of recent basic research on flame aerosol reactors for the gasphase synthesis of nanoparticles. Emphasis is placed on flame reactor technology as it is widely used in industry for the large-scale manufacture of oxide and carbon nanoparticles. The importance of reactant gas mixing, additives and external electric fields in flame technology is highlighted for the control of product particle properties by affecting the chemistry, temperature and collision histories. Laser-induced fluorescence (L!F), Fourier transform infrared spectroscopy (FTIRJ and thermophoretic sampling are addressed as some of the promising diagnostic tools in flame aerosol research and even for on-line process control. Recent work on aerosol dynamics modeling is presented, and the growing importance of computational fluid dynamics (CFD) aimed at better understanding the particle formation and growth mechanisms in flames is emphasized, focusing on the synthesis of non-aggregated nanoparticles.

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The role of ferrocene in flame synthesis of silica

Cited by 23 publications

References 24 publications

Synthesis of SiO2 and SnO2 particles in diffusion flame reactors

Synthesis of SiO2 and SnO2 particles in diffusion flame reactors

Control of Particle Morphology and Size in Vapor-Phase Synthesis of Titania, Silica and Alumina Nanoparticles

Aerosol Flame Reactors for the Synthesis of Nanoparticles

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