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

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...

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Bibliographic Details
Published in:Chemical research in Chinese universities 2016-06, Vol.32 (3), p.418-422
Main Authors: Tursun, Mamutjan, Wang, Bingshuai, Jiang, Yan, Yu, Haibiao, Sun, Xingtao, Wang, Xinping
Format: Article
Language:English
Subjects:
Analytical Chemistry
Chemistry
Chemistry and Materials Science
Chemistry/Food Science
Co3O4
co催化剂
Inorganic Chemistry
N2O
Organic Chemistry
Physical Chemistry
分解催化剂
离子掺杂
程序升温脱附
程序升温还原
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Summary: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%02, 2%H20, 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.
ISSN:1005-9040
2210-3171
DOI:10.1007/s40242-016-5486-y