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N2O Decomposition Catalyzed by K+-doped Bi0.02Co |
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| Authors: | Tursun Mamutjan WANG Bingshuai JIANG Yan YU Haibiao SUN Xingtao WANG Xinping |
| Institution: | 1. College of Chemistry &Environmental Science, Kashgar University, Kashgar 844000, P. R. China; 2. Liaoning Kelong Fine Chemical Co. Ltd., Liaoyang 111003, P. R. China; 3. Key Laboratory of Industrial Ecology and Environmental Engineering(MOE) and State Key Laboratory of Fine Chemical, School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, P. R. China |
| Abstract: | K+-doped Bi0.02Co was investigated as catalyst for N2O decomposition. It was found that the catalytic performance of the Bi0.02Co catalyst, which was prepared by coprecipitation method, can be effectively modified by potassium cations via impregnation. The optimized K0.01Bi0.02Co catalyst exhibited much higher activity compared with Bi0.02Co and K0.01Co for the reaction in feed gas 0.2% N2O/Ar, irrespective of the presence or absence of impurity gas(volume fraction) 5%O2, 2%H2O, 0.12%NO and 10%CO2. Characterization of the catalysts with H2 temperature programmed reduction(H2-TPR) and O2 temperature programmed desorption(O2-TPD) indicate that the Co-O bond in Bi0.02Co was weakened by the K+doping, and hence the K0.01Bi0.02Co catalyst has much higher turnover frequency(TOF) than Co3O4 spinel and Bi0.02Co for the reaction. |
| Keywords: | N2O Turnover frequency Reaction order H2 temperature programmed reduction O2 temperature programmed desorption |
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