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Critical Reviews in Solid State and Materials Sciences Volume 36, 2011 - Issue 2
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Original Articles

Formation of Pyrogenic Silica: Spectroscopic and Quantum Chemical Insight

Volodymyr D. Khavryuchenko Institute for Sorption and Problems of Endoecology, National Academy of Sciences of Ukraine, Kyiv, Ukraine
,
Oleksiy V. Khavryuchenko Chemistry Department, Kyiv Taras Shevchenko National University, Kyiv, Ukraine
&
Vladyslav V. Lisnyak Chemistry Department, Kyiv Taras Shevchenko National University, Kyiv, Ukraine
Pages 47-65 | Published online: 09 Jun 2011
 
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Abstract

This article describes the genesis of amorphous silica under high-heat conditions from SiO2 molecules through protoparticles, primary particles, and aggregates to agglomerates using vibrational spectra and quantum chemical simulations data. The impact of small molecules (water, HCl, CO2) is also discussed. The article also explains the nature of the pyrogenic silica amorphism.

ACKNOWLEDGMENTS

The authors express their gratitude to Dr. H. Barthel (Wacker Chemie GmbH) for kind cooperation and fruitful discussion.

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