A Common Factor Determining the Features of the Photocatalytic Hydrogenation and Isomerization of Alkenes over Ti–Si Oxides

Abstract
On addition of SiO2 to TiO2 photocatalysts, it has been found that the yields of C2H6 and CH4 in the photocatalytic hydrogenation of propylene as well as that of 1-butene in the photocatalytic isomerization of cis-2-butene decrease simultaneously. This gives some support for the mechanisms for both reactions where [Ti3+–O−] pairs are important.