期刊
CATALYSIS TODAY
卷 75, 期 1-4, 页码 23-28出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/S0920-5861(02)00039-1
关键词
catalytic wet air oxidation; butyric acid; carbon-supported iridium catalysts
Aqueous solutions of butyric acid were treated by catalytic wet air oxidation using carbon-supported iridium catalysts in a stirred reactor. Under the operating conditions of 6.9 bar of oxygen partial pressure and 200 C of temperature, conversions up to 52.9% after 2 h were obtained depending on the type of catalyst used. The effects of butyric acid initial concentration, loading of catalyst, oxygen partial pressure and temperature were investigated and the empirical rate law for acid conversion is presented. Oxidation intermediates such as propionic and acetic acid were identified. The heterogeneous catalyzed free-radical oxidation of butyric acid is discussed. (C) 2002 Elsevier Science B.V. All rights reserved.
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