A novel photocatalytic monolith reactor for multiphase heterogeneous photocatalysis

作者：Du Peng; Cameiro Joana T; Moulijn Jacob A; Mul Guido^*

来源：Applied Catalysis A: General , 2008, 334(1-2): 119-128.

DOI：10.1016/j.apcata.2007.09.045

• photoreactor
• monolith
• optical fiber
• cyclohexane
• photocatalysis
• selective oxidation
• UV light
• TiO2
• coating

A novel reactor for multi-phase photocatalysis is presented, the so-called internally illuminated monolith reactor (IIMR). In the concept of the IIMR, side light emitting fibers are placed inside the channels of a ceramic monolith, equipped with a TiO2 photocatalyst coated on the wall of each individual channel. The photonic efficiency achieved with the IIMR reactor in the selective photo-oxidation of cyclohexane is 0.062, which is lower than obtained with a top illumination slurry reactor (0.151), but higher than the efficiency of an annular slurry reactor and reactor configuration with side light fibers immersed in a TiO2 slurry, reaching a photonic efficiency of 0.008 and 0.002, respectively. The results are discussed on the basis of differences in photon flows entering the reactors, and the related magnitude of product concentrations.

• 出版日期2008-1