The Role of Electron-Acceptor Sites during Catalytic Dehydrochlorination of 1-Chlorobutane over Metal Oxides
In this study we characterized weak electron-acceptor sites formed during 1-chlorobutane dehydrochlorination over several MgO and Al2O3 samples using perylene and anthracene as spin probes. This is the first ever study where the concentrations of electron-acceptor sites were measured during a catalytic reaction. It is shown that the concentration of weak electoracceptor sites correlates with the catalytic activity. The obtained results indicate that weak electron-acceptor sites tested using perylene may be the active sites accounting for 1-chlorobutane dehydrochlorination in the active state of the catalysts. It seems to be very important to study possible correlations between the concentrations of electron-acceptor sites and catalytic activity of various catalytic reactions believed to take place on surface acid sites to elucidate the possible role of electronacceptor sites in these reactions.