Catalytic wet air oxidation of butyric acid solutions using carbon-supported iridium catalysts

• Type: Article in International Scientific Journal
• Date: 2002

Authors

Gomes, HT (Author) Other; Figueiredo, JL (Author) FEUP; Faria, JL (Author) FEUP

Journal

Title: Catalysis Today

Vol. 75

Pages: 23-28

ISSN: 0920-5861

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 23 Citations

Scopus - 25 Citations

Scientific classification

FOS: Engineering and technology > Chemical engineering

Other information

Authenticus ID: P-000-NPA

DOI: 10.1016/s0920-5861(02)00039-1

Abstract (EN): 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.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 6