Light distribution field in catalyst suspensions within an annular photoreactor

摘要: Abstract In photochemistry, an accurate description of the radiation field is important for successful modeling and subsequent design a photocatalytic reactor, since determines local volumetric rate energy absorption, which in turn controls reaction rate. However, scattering by catalyst particles present water causes photon to be redistributed light heterogeneous photoreactor consequently difficult evaluate. Light determined selected optical properties particle, such as absorption coefficients. so far there has been no direct experimental method measure these two values. addition, coefficients alone are not sufficient describe effect on suspension. A third property mode, gives spatial distribution directions, found parallel field. this study, new model along with commercially available titanium dioxide (TiO 2 ) catalysts was used determine test annular different concentrations suspended TiO . Chemical actinometry intensity inside reactor. The mode fitting data predictions. It that change significantly at concentrations. This suggests application universal may suitable determination large range