PHOTOCATALYTIC DESTRUCTION OF PHENOL AND SALICYLIC ACID WITH AEROSOL-MADE AND COMMERCIAL TITANIA POWDERS
作者:
GEORGEP. FOTOU,
SOTIRISE. PRATSINIS,
期刊:
Chemical Engineering Communications
(Taylor Available online 1996)
卷期:
Volume 151,
issue 1
页码: 251-269
ISSN:0098-6445
年代: 1996
DOI:10.1080/00986449608936551
出版商: Taylor & Francis Group
关键词: Photocatalytic destruction;Phenol;Salicylic acid;Titania powder
数据来源: Taylor
摘要:
The photocatalytic destruction of phenol and salicylic acid in aerated aqueous suspensions of titania powders made in flame reactors was studied. These powders were made in five hydrocarbon diffusion flames by hydrolysis and oxidation of TiCI4that resulted in powders of high specific surface area and high anatase content. The photoactivity of the flame-made titania powders was comparable and slightly better to that of commercial Degussa P25. Doping the titania with SiO2was detrimental to the photoactivity of the powders in contrast with what was seen in non-aerated suspensions. The photodegradation of phenol followed a first-order law while the Langmuir-Hinshelwood model was found to most accurately represent the photodegradation of salicylic acid.
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