Journal of Chromatography A 2012 DOI: 10.1016/j.chroma.2012.02.054 View full text
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Benjamin A. Ashu-Arrah, Jeremy D. Glennon, Klaus Albert

Abstract: This research examines bonding methodology, surface coverage and silanol conversion efficiencies on the preparation of silica hydride (SiH) intermediate from triethoxysilane (TES) and dimethylmethoxysilane (DMMS) using sc-CO(2) and dioxane as reaction solvent. Under sc-CO(2) reaction conditions (at temperature and pressure of 100 °C, 414 bar, respectively and 3h reaction time), the surface coverages of SiH (evaluated from %C obtained from elemental analysis) prepared with DMMS (3.39 μmol/m(2)) and TES (4.46 μm…

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