Catalytic wet air oxidation of acetic acid over different ruthenium catalysts

Ruthenium catalysts were prepared by impregnation of different supports: ZrO 2, CeO 2, TiO 2, ZrO 2–CeO 2 and TiO 2–CeO 2. Their activities for acetic acid oxidation in aqueous solution were investigated in a stirred reactor at a reaction temperature of 200 °C and total pressure of 4 MPa. The order...

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Bibliographic Details
Published inCatalysis communications Vol. 9; no. 13; pp. 2163 - 2167
Main Authors Wang, Jianbing, Zhu, Wanpeng, He, Xuwen, Yang, Shaoxia
Format Journal Article
LanguageEnglish
Published Elsevier B.V 20.07.2008
Subjects
Acetic acid
Catalytic wet air oxidation
Non-lattice oxygen
Ruthenium catalyst
Ruthenium catalyst
Catalytic wet air oxidation
Non-lattice oxygen
Acetic acid
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ISSN1566-7367
1873-3905
DOI10.1016/j.catcom.2008.04.019

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Summary:Ruthenium catalysts were prepared by impregnation of different supports: ZrO 2, CeO 2, TiO 2, ZrO 2–CeO 2 and TiO 2–CeO 2. Their activities for acetic acid oxidation in aqueous solution were investigated in a stirred reactor at a reaction temperature of 200 °C and total pressure of 4 MPa. The order of the catalyst activity obtained was RuO 2/ZrO 2–CeO 2 > RuO 2/CeO 2 > RuO 2/TiO 2–CeO 2 > RuO 2/ZrO 2 > RuO 2/TiO 2, which corresponds to surface concentration of non-lattice oxygen (defect-oxide or hydroxyl-like group) of these catalysts. The non-lattice oxygen on the catalyst surface plays an important role in the catalytic activity.
ISSN:1566-7367
1873-3905
DOI:10.1016/j.catcom.2008.04.019