Matter
Name
Mg-silicate gel with composition Mg/Si=2.4
Family
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
Number
1
Mode of mixing
single material
Materials
  Name Arrangement Mass (g) Mass fraction Abundance comments
Mg-silicate gel with composition Mg/Si=2.4 1.0
Title
Sol-gel synthesis of amorphous Mg silicate

Produced matter

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
Publications