Abstract
Amorphous silica Silochrom-80 is modified in a liquid phase in two stages with poly(ethylhydrosiloxane) and hexamethyldisilazane. Adsorption studies suggest that the modified silicas have a porous structure. Hexamethyldisilazane is found to have an active role in the modification of the secondary porous structure of the samples. The thickness of modifying layers on the surface of the samples is calculated. Residual hydrophilic sites are identified on the modified silica surface, and their concentration is determined using chromatography data and the parameters of the Langmuir equation. It is shown that the two-stage modification of silica with the selected reagents makes it possible to entirely deactivate the most active vicinal hydroxyl groups on the sorbent surface and, to a substantial extent, its isolated hydroxyl groups.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
