Peculiarities of Chemisorption of Dimethyl Carbonate on Silica Surface

Abstract

This paper presents the results of studies of dimethyl carbonate interaction with sites of the fumed silica surface. The investigations were performed in a vacuum quartz cuvette using IR spectroscopy method. Chemical interaction of dimethyl carbonate with sites of the dehydrated silica surface was shown to occur at temperature of 200 °C and higher, chemisorption processes take place involving both structural silanol groups and siloxane bridges on the surface. Keywords: fumed silica, dimethyl carbonate, chemisorption, silanol groups, siloxane bond.