N2O Decomposition Catalyzed by K+-doped Bi0.02Co

doi:10.1007/s40242-016-5486-y

Chemical Research in Chinese Universities ›› 2016, Vol. 32 ›› Issue (3): 418-422.doi: 10.1007/s40242-016-5486-y

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N₂O Decomposition Catalyzed by K⁺-doped Bi_0.02Co

Tursun Mamutjan¹, WANG Bingshuai², JIANG Yan², YU Haibiao³, SUN Xingtao³, WANG Xinping³

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

Received:2015-12-14 Revised:2015-12-31 Online:2016-06-01 Published:2016-01-14
Contact: WANG Xinping E-mail:dllgwxp@dlut.edu.cn
Supported by:
Supported by the State Hi-tech Research and Development Project of the Ministry of Science and Technology of China(No. 2013AA030705) and the National Natural Science Foundation of China(Nos. 21177016, 21277019).

Abstract

Abstract:

K⁺-doped Bi_0.02Co was investigated as catalyst for N₂O decomposition. It was found that the catalytic performance of the Bi_0.02Co catalyst, which was prepared by coprecipitation method, can be effectively modified by potassium cations via impregnation. The optimized K_0.01Bi_0.02Co catalyst exhibited much higher activity compared with Bi_0.02Co and K_0.01Co 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 Bi_0.02Co was weakened by the K⁺doping, and hence the K_0.01Bi_0.02Co catalyst has much higher turnover frequency(TOF) than Co₃O₄ spinel and Bi_0.02Co for the reaction.

Key words: N₂O, Turnover frequency, Reaction order, H₂ temperature programmed reduction, O₂ temperature programmed desorption

Tursun Mamutjan, WANG Bingshuai, JIANG Yan, YU Haibiao, SUN Xingtao, WANG Xinping. N₂O Decomposition Catalyzed by K⁺-doped Bi_0.02Co[J]. Chemical Research in Chinese Universities, 2016, 32(3): 418-422.

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N₂O Decomposition Catalyzed by K⁺-doped Bi_0.02Co

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