PHOTOCATALYZED MINERALIZATION OF A TRIMETHYLATED PHENOL IN OXYGENATEDAQUEOUS TITANIA - AN ALTERNATIVE TO MICROBIAL-DEGRADATION

Authors
TERZIAN R SERPONE N HIDAKA H
Citation
R. Terzian et al., PHOTOCATALYZED MINERALIZATION OF A TRIMETHYLATED PHENOL IN OXYGENATEDAQUEOUS TITANIA - AN ALTERNATIVE TO MICROBIAL-DEGRADATION, Catalysis letters, 32(1-2), 1995, pp. 227-233
Citations number
14
Categorie Soggetti
Chemistry Physical
Journal title
Catalysis letters → ACNP
ISSN journal
1011372X
Volume
32
Issue
1-2
Year of publication
1995
Pages
227 - 233
Database
ISI
SICI code
1011-372X(1995)32:1-2<227:PMOATP>2.0.ZU;2-B
Abstract
The most methylated phenolic substrate in coal tar creosote, 2,3,5-tri methylphenol (TMP), was mineralized photocatalytically to CO2 and wate r at pH 3 in illuminated air-equilibrated titania dispersions. Trimeth ylhydroquinone and trimethylbenzoquinone were the two major aromatic i ntermediates; trace amounts of trimethylcatechol also formed. Complete mineralization was achieved in oxygenated solutions in similar to 1 h ; conversion of TMP was over in less than similar to 25 min in aerated solutions and in less than 12 min in oxygenated solutions.