{"title":"Physico-chemical properties of silicon dioxides obtained by extraction from sulfuric acid solutions from acid decomposition of nepheline","authors":"Yuriy O. Velyaev, D. Maiorov","doi":"10.37614/2307-5252.2021.2.5.010","DOIUrl":null,"url":null,"abstract":"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.","PeriodicalId":438304,"journal":{"name":"Transaction Kola Science Centre","volume":"20 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2021-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Transaction Kola Science Centre","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.37614/2307-5252.2021.2.5.010","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
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Abstract
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.
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