Hexafluoroacetone: A new solvent for manufacturing SiO2-based aerogels

被引：8

作者：

Lermontov, S. A. ^{[1
,2
]}

Malkova, A. N. ^{[2
]}

Sipyagina, N. A. ^{[1
,2
]}

Baranchikov, A. E. ^{[3
]}

Petukhov, D. I. ^{[2
]}

Ivanov, V. K. ^{[3
,4
]}

机构：

[1] Russian Acad Sci, Inst Physiol Act Cpds, Chernogolovka 142432, Moscow Oblast, Russia

[2] Moscow MV Lomonosov State Univ, Moscow 119991, Russia

[3] Russian Acad Sci, Kurnakov Inst Gen & Inorgan Chem, Moscow 119991, Russia

[4] Tomsk Natl Res Univ, Tomsk 634050, Russia

来源：

RUSSIAN JOURNAL OF INORGANIC CHEMISTRY | 2015年 / 60卷 / 05期

关键词：

SUPERCRITICAL DRYING MEDIA; SILICA;

D O I：

10.1134/S0036023615050137

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Hexafluoroacetone (HFA) hydrate has been shown to appreciably influence the physicochemical parameters of SiO2 aerogels when used at the stage of preparing hydrated silica gels in the synthesis of the aerogels. For example, when [SiO2]: HFA = 1: 2 in the reaction mixture, aerogels have specific surface areas about 1.5 times as high as in similar samples prepared without HFA. Aerogel samples prepared in the presence of HFA contain considerable amounts of chemically bound fluorine.

引用

页码：541 / 545

页数：5

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