Matter
- Name
- Mg-silicate gel with composition Mg/Si=2.4
- Family
- solid
- Database
- Experimentalists
- Origins
- laboratory
- Provider
- Astrophysical Institute and University Observatory Jena
- Preparation
- raw
- Phase type
- solid
- Texture
- pulverulent
- Type of porosity
- open pores
- Oxides
-
Formula $MgO$ $SiO_{2}$ Mass fraction (%) 0.6134 0.3789 - Oxides comments
- Some hydroxide impurities were detected in addition
- Title
- Sol-gel synthesis of amorphous Mg silicate
- Matter
- Mg-silicate gel with composition Mg/Si=2.4 (this matter)
- Processing steps
-
Step Date Type Process Changes #1 chemical hydrolysis of tetraethoxysiloxane and magnesium methylate in water and methanol under Ar atmosphere formation of hydroxides #2 chemical H2O2-assisted condensation reaction under Ar atmosphere to form a silicate network formation of a gel #3 pressure removal of solvents in a rotary evaporation under reduced pressure #4 thermal densification of the silicate network by heating to about 450 deg C