プレート型光化学反応器特性に及ぼす内部フィルターの影響

抄録

The effects of light absorption by a product (or an intermediate) R and diffusion rates of R and a reactant A on the reaction characteristics of a batch or a laminar flow plate-type photochemical reactor have been studied theoretically under conditions of the weak absorption of light by A and the irradiation of monochromatic parallel light, where the reaction Ahυ→R or Ahυ→Rhυ→S occurs.
In the case of Ahυ→R, the influence of diffusion rate is more pronounced at the more effective internal light filtering : the slower the diffusion rate, the lower is the average conversion under constant radiant intensity. This effect is much enhanced in a flow system because of the velocity distribution.
As for the characteristics of flow reactor in which the photoconsecutive reaction takes place, the extent of the conversion of A becomes less as the quantum yield of the second step of reaction is lower. The selectivity of the intermediate R is slightly decreased with slower diffusion rate and is insensitive to the extent of internal light filtering.