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Catalytic oxidation of toluene and tetralin in superoritical carbon dioxide
Author(s) -
Zhou Luho,
Erkey Can,
Akgcrinan Aydin
Publication year - 1995
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.690410911
Subject(s) - tetralin , toluene , chemistry , catalysis , oxygen , carbon dioxide , supercritical fluid , catalytic oxidation , platinum , inorganic chemistry , supercritical water oxidation , supercritical carbon dioxide , organic chemistry
The catalytic total oxidation of toluene and tetrahydronaphthalene (tetralin) in super‐critical carbon dioxide over a 0.5% platinum γ ‐alumina catalyst was studied in a fixed‐bed reactor. Toluene oxidation experiments were performed at 618, 633, 648 and 663 K, and at 7.93, 9.31 and 10.7 MPa. Tetralin oxidation experiments were performed at 573, 598, 623 and 648 K and at 8.96and 10.0 MPa Inlet concentrations of toluene and tetralin were varied in the ranges 569 to 2,858 ppm (mass/mass) and 1,420 to 3,648 ppm, respectively. Reactions were run at excess oxygen with a 25:1 molar ratio of oxygen to toluene and a 15:1 molar ratio of oxygen to tetralin. A stepwise mechanism was postulated for the oxidation reaction to describe the kinetics of toluence and tetralin oxidation in supercritical carbon dioxide, and the reaction orders and activation energies were determined.