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381276 Aldrich

Silica

99.8%

Synonym: Silica, fumed, Silica, Silicic anhydride, Silicon dioxide amorphous, Silicon dioxide

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Properties

Related Categories Materials Science, Metal and Ceramic Science, Oxides, Silicon
assay   99.8%
surface area   175-225 m2/g

Description

Features and Benefits

Has interesting thickening and thixotropic properties, and an enormous external surface area.

Other Notes

Particle sizes are for primary particles, which form branched, chain-like aggregates a few tenths of a micron long.

May contain adsorbed H2O and CO2 which is removable by calcining at >900°C

Packaging

100 g in poly bottle

500 g in poly drum

Application

Silica was used in synthesis of silicalite. Silica was used to assist the catalytic growth of oxide and nitride nanowires.

General description

Silica is a naturally occurring material in minerals, flint and in some plants in crystalline phase. Silica commonly used in industries is in synthetic form. Surface area, pore volume, pore size and particle size are independently controllable to some extent. The crystalline silica may be classified based on atmospheric pressure as:
a. Quartz: = 1143K
b. Tridymite: 1143 - 1743K
c. Cristobalite: = 1743, over 1973K it forms amorphous vitreous silica glass.

Price and Availability

Safety & Documentation

Safety Information

RIDADR 
NONH for all modes of transport
WGK Germany 
2
RTECS 
VV7310000
Protocols & Articles

Articles

Synthesis of ZnO Aggregates and Their Application in Dye-sensitized Solar Cells

Solar energy, as the primary source of energy for all living organisms on Earth, is considered the ultimate solution to the energy and environmental challenge as a carbon-neutral energy source. Many ...
Qifeng Zhang, Kwangsuk Park, Guozhong Cao
Material Matters 2010, 5.2, 32.
Keywords: Absorption, Adsorption, Atomic layer deposition, Calorimetry, Centrifugation, Chemical reactions, Degradations, Deposition, Diffraction, Diffusion, Environmental, Hydrogenations, Ligands, Materials Science, Methods, Photovoltaics, Precipitation, Recombination, Scanning electron microscopy, Semiconductor, Solar cells, Spectra, Spectroscopy, Type, Usage, X-Ray diffraction

Peer-Reviewed Papers
15

References

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