Open AccessPhysico-chemical properties of silicon dioxides obtained by extraction from sulfuric acid solutions from acid decomposition of nepheline
Author(s) -
Yu. O. Velyaev,
AUTHOR_ID,
Д. В. Майоров,
AUTHOR_ID
Publication year - 2021
Publication title -
trudy kolʹskogo naučnogo centra ran
Language(s) - English
Resource type - Journals
ISSN - 2307-5252
DOI - 10.37614/2307-5252.2021.2.5.010
Subject(s) - extraction (chemistry) , sulfuric acid , decomposition , microporous material , nepheline , acetone , chemistry , silicon , inorganic chemistry , phase (matter) , materials science , chemical engineering , mineralogy , chromatography , organic chemistry , engineering
The synthesis of silica was carried out by extraction from a silica-containing solution from the decomposition of nepheline using acetone and ethanol, followed by gelatinization of the organic phase. The structural and surface properties of the obtained sample of SiO2 were studied and the pH of the isoionic point of their surface was determined. It was found that the use of extraction does not have a destructive effect on the specific surface of the SiO2 xerogel and allows preserving its original microporous structure.