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Conflict of Interest: In relation to this article, we declare that there is no conflict of interest.

Publication history: Received July 31, 2008
Accepted December 27, 2008

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Catalytic dry oxidation of aniline, benzene, and pyridine adsorbed on a CuO doped activated carbon

Bingzheng Li^{1 2} Zhenyu Liu^{1 3†} Zhiping Lei^{1 4} Zhanggen Huang¹

¹State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, P. R. China ²Graduate University of Chinese Academy of Sciences, Beijing 100049, P. R. China ³State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology,, Beijing 100029, P. R. China ⁴School of Chemical & Chemistry, Anhui university of Technology, Maanshan, 243002, P. R. China

Korean Journal of Chemical Engineering, May 2009, 26(3), 913-918(6), 10.1007/s11814-009-0153-3

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Abstract

Adsorption of aniline, benzene and pyridine from water on a copper oxide doped activated carbon (CuO/AC) at 30 ℃ and oxidation behavior of the adsorbed pollutants over CuO/AC in a temperature range up to 500 ℃ are investigated in TG and tubular-reactor/MS systems. Results show that the AC has little activity towards oxidation of the pollutants and CuO is the active oxidation site. Oxidation of aniline occurs at 231-349 ℃ and yields mainly CO2, H2O and N2. Oxidation of pyridine occurs at a narrower temperature range, 255-309 ℃, after a significant amount of desorption starting at 150 ℃. Benzene desorbs at temperatures as low as 105 ℃ and shows no sign of oxidation. The result suggests that adsorption-catalytic dry oxidation is suitable only for the strongly adsorbed pollutants. Oxidation temperatures of CuO/AC for organic pollutants are higher than 200 ℃ and pollutants desorbing easily at temperatures below 200 ℃ cannot be treated by the method.

Keywords

Catalytic Dry Oxidation CuO Doped Catalyst Aniline Benzene Pyridine Desorption

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