Photocatalysis in microreactors

被引：179

作者：

Gorges, R ^{[1
]}

Meyer, S ^{[1
]}

Kreisel, G ^{[1
]}

机构：

[1] Univ Jena, Inst Tech Chem & Environm Chem, D-07743 Jena, Germany

来源：

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY | 2004年 / 167卷 / 2-3期

关键词：

microreactor; photocatalytic; TiO2; kinetics; mass transfer; UV-A LED;

D O I：

10.1016/j.jphotochem.2004.04.004

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A photocatalytic microreactor with immobilized titanium dioxide as photocatalyst and illuminated by UV-A light emitting diodes was constructed and tested for the degradation of the model substance 4-chlorophenol. The microreactor consisted of 19 channels with a cross-section of approximately 200 mum x 300 mum. Intrinsic kinetic parameters of the reaction could be detern-lined and mass-transfer limitations for the employed operating conditions could be excluded by calculating appropriate Damkbhler numbers. Photonic efficiencies for the degradation of 4-chlorophenol are provided. The illuminated specific surface of the microstructured reactor surpasses that of conventional photocatalytic reactors by a factor of 4-400. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：95 / 99

页数：5

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