Citation: Guchu Zou, Zeyun Fan, Xin Yao, Yi Zhang, Zhixiang Zhang, Mingxia Chen, Wenfeng Shangguan. Catalytic performance of Ag/Co-Ce composite oxides during soot combustion in O₂ and NO_x: Insights into the effects of silver[J]. Chinese Journal of Catalysis, ;2017, 38(3): 564-573. doi: 10.1016/S1872-2067(17)62758-X shu

Catalytic performance of Ag/Co-Ce composite oxides during soot combustion in O₂ and NO_x: Insights into the effects of silver

a Research Center for Combustion and Environmental Technology, Shanghai Jiao Tong University, Shanghai 200240, China;
b CAS Key Laboratory of Inorganic Coating Material, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China

Received Date: 25 October 2016
Revised Date: 28 November 2016

Fund Project: This work was supported by the National Natural Science Foundation of China (21577088).

The composite oxides xAg/Co_0.93Ce_0.07 (x = Ag/(Co+Ce) molar ratio), intended for use as high performance catalytic materials, were successfully prepared via citric acid complexation. The effects of silver on the performance of these substances during soot combustion were subsequently investigated. Under O₂, the 0.3Ag/Co_0.93Ce_0.07 catalyst resulted in the lowest ignition temperature, T₁₀, of 197℃, while the minimum light-off temperature was obtained from both 0.2Ag/Co_0.93Ce_0.07 and 0.3Ag/Co_0.93Ce_0.07 in the NO_x atmosphere. These materials were also characterized by various techniques, including H₂, soot and NO_x temperature programmed reduction, X-ray diffraction, and electron paramagnetic resonance, Raman, X-ray photoelectron, and Fourier transform infrared spectroscopic analyses. The results demonstrated that silver significantly alters the catalytic behavior under both O₂ and NO_x, even though the lattice structure of the mixed oxide is not affected. Surface silver oxides generated under the O₂ atmosphere favor soot combustion by participating in the redox cycles between soot and the silver oxide, whereas the AgNO₃ that forms in a NO_x-rich atmosphere facilitates soot abatement at a lower temperature. The inferior activity of AgNO₃ relative to that of Ag₂O results in the different catalytic performance in the presence of NO_x or O₂.
- Catalytic removal,
- Soot,
- NO_x,
- Silver oxides,
- Co-Ce composite oxide,
- AgNO₃
1. [1]
2. [2]
3. [3]
4. [4]
5. [5]
6. [6]
7. [7]
8. [8]
9. [9]
10. [10]
11. [11]
12. [12]
13. [13]
14. [14]
15. [15]
16. [16]
17. [17]
18. [18]
19. [19]
20. [20]
21. [21]
22. [22]
23. [23]
24. [24]
25. [25]
26. [26]
27. [27]
28. [28]
29. [29]
30. [30]
31. [31]
32. [32]
33. [33]
34. [34]
35. [35]
36. [36]
37. [37]
38. [38]
39. [39]
40. [40]
41. [41]
42. [42]
43. [43]
44. [44]
45. [45]
46. [46]
47. [47]
48. [48]
49. [49]
50. [50]
51. [51]
52. [52]
53. [53]
54. [54]
55. [55]
56. [56]
1. [1]
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Catalytic performance of Ag/Co-Ce composite oxides during soot combustion in O2 and NOx: Insights into the effects of silver

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通讯作者: 陈斌, bchen63@163.com

Catalytic performance of Ag/Co-Ce composite oxides during soot combustion in O₂ and NO_x: Insights into the effects of silver