A comparative study of efficiency of photooxidation of organic contaminants in water solutions in various photochemical and photocatalytic systems .1. Phenol photooxidation promoted by hydrogen peroxide in a flow reactor

被引：9

作者：

Martyanov, IN

Savinov, EN

Parmon, VN

机构：

[1] Boreskov Institute of Catalysis, Novosibirsk

来源：

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY | 1997年 / 107卷 / 1-3期

关键词：

phenol; photooxidation; TiO2; hydrogen peroxide;

D O I：

10.1016/S1010-6030(96)04574-1

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：

Phenol photooxidation in a flow reactor of a cylinder shape was studied for systems H2O2 + UV and TiO2 + H2O2 + UV. TiO2 was prepared as cylinder granules 0.3 cm long and 0.2 cm in diameter. Limit liquid flows and concentrations of organics that can be converted in the reactors were estimated. The contributions of various reaction routes (direct photochemical action on the organic compound, OH generation from H2O2, photocatalytic decomposition of H2O2 and organics on TiO2) were estimated and shown experimentally. It has been proved in experiment that in a designed photocatalytic reactor (length 15 cm, mercury lamp middle pressure 250 W) up to 98% of phenol can be decomposed at a concentration of 6 x 10(-5) M phenol and a concentration of 10(-2) M peroxide at a flow of 211 h(-1). (C) 1997 Elsevier Science S.A.

引用

页码：227 / 231

页数：5