Journal
CHEMISTRY LETTERS
Volume 45, Issue 7, Pages 828-830Publisher
CHEMICAL SOC JAPAN
DOI: 10.1246/cl.160329
Keywords
Tetraalkoxysilane; Silica; Carbon dioxide
Categories
Funding
- Development of Innovative Catalytic Processes for Organosilicon Functional Materials Project of NEDO, Japan
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A new efficient method of synthesizing tetramethoxysilane (TMOS) directly from silica (SiO2) and methanol was developed using a base catalyst and 2,2-dimethoxypropane (acetal) as an organic dehydrating reagent. Carbon dioxide significantly accelerated the reaction. TMOS was obtained in good yield from SiO2 in 24 h using stoichiometric or excess amounts of the acetal with a good material balance. The TMOS synthesis from a natural silica substrate, such as rice hull ash is described.
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