Non-Thermal Plasma Assisted Catalytic Oxidation NO over Mn-Co-Ox Catalysts at Low-Temperature

Abstract:

Mn-Co-Ox catalyst was prepared by the co-precipitation method. The most active catalysts were obtained with a molar Co/(Mn+Co) ratio of 0.1. The results showed that over this catalyst, NO oxidation conversion reached 56% at 150°C and 59% at 175°C with a high space velocity of 35000h-1. Their surface properties were evaluated by means of scanning electron microscopy (SEM) and X-ray diffractometer (XRD). The process of Non-thermal plasma-assisted catalytic oxidation of NO under low-temperature was studied. And the NO conversion could reach 71% with the Non-thermal plasma-assisting at 125°C when the input voltage was 30V. The increasing activities at low temperature (50-150°C) were more apparently higher than high temperature by plasma. And the low-temperature catalytic activity of the catalyst was increased with the increase of the input voltage.

• Periodical: Advanced Materials Research (Volumes 160-162)
• Pages: 336-341
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.160-162.336
• Online since: November 2010
• Authors: Kai Li, Xiao Long Tang, Hong Hong Yi, Ping Ning, Zhi Qing Ye, Dong Juan Kang, Jing Hao Song
• Keywords: Catalytic Oxidation, Mn-Co-Ox Catalyst, NO, Non-Thermal Plasma

References

[1] J.F. Zhang, Y. Huang, X. Chen. Selective catalytic oxidation of NO over iron and manganese oxides supported on mesoporous silica[J]. Journal of Natural Gas Chemistry, Volume 17, Issue 3, September 2008, Pages 273-277.

DOI: 10.1016/s1003-9953(08)60063-8

[2] J. Yu, F. Guo, Y. L. Wang, J. H. Zhu, Y. Y Liu, F. B Su, S. Q. Gao, G. W Xu. Sulfur poisoning resistant mesoporous Mn-base catalyst for low-temperature SCR of NO with NH3 [J]. Applied Catalysis B: Environmental, Volume 95, Issues 1-2, 12 March 2010, Pages 160-168.

DOI: 10.1016/j.apcatb.2009.12.023

[3] X. L. Tang, J . M. Hao, W. G. Xu, J. H. Li. Low temperature selective catalytic reduction of NOx with NH3 over amorphous MnOx catalysts prepared by three methods. Catalysis Communications[J], Volume 8, Issue 3, March 2007, Pages 329-334.

DOI: 10.1016/j.catcom.2006.06.025

[4] G. S. Qi, R. T. Yang, R. Chang. MnOx-CeO2 mixed oxides prepared by co-precipitation for selective catalytic reduction of NO with NH3 at low temperature. Applied Catalysis B: Environmental, Volume 51, Issue 2, 30 July 2004, Pages 93-106.

DOI: 10.1016/j.apcatb.2004.01.023

[5] H. Miessner, K. P. Francke, R. Rudolph, T. Hammer, NOX removal in excess oxygen by plasma-enhanced selective catalytic reduction[J]. Catalysis Today, Volume 75, Issues 1-4, 3 July 2002, Pages 325-330.

DOI: 10.1016/s0920-5861(02)00085-8

[6] J. V. Durme, J. Dewulf, C. Leys, H. V. Langenhove, Post-plasma catalytic technology for the removal of toluene from indoor air: Effect of humidity[J]. Applied Catalysis B: Environmental, Volume 87, Issues 1-2, 16 March 2009, Pages 78-83.

DOI: 10.1016/j.apcatb.2008.08.015

[7] L. M. Dong, S. Lan, J. X. Yang, X. C. Chi, Plasma chemical reaction for nitric oxide and sulfur dioxide removal in corona discharge reactor, Annual Report Conf. on Electrical Insulation and Dielectric Phenomena, p.440–443, (2003).

DOI: 10.1109/ceidp.2003.1254887

[8] L. M. Shi, W. Chu, F. F. Qu, J. Y. Hu, M. M. Li. Catalytic performance for methane combustion of supported Mn-Ce mixed oxides[J]. Journal of Rare Earths, Volume 26, Issues 6, 2008, Pages 836.

DOI: 10.1016/s1002-0721(09)60017-x

[9] X. L. Tang, H. Li, H.H. Yi, L.L. Yu. Transition metal oxides catalysts for oxidation of nitric oxide[J]. Chinese Journal of Environmental Engineering, Volume 4, Issues 4, 2010, Pages 639-643.

[10] H. Li. Non-thermal plasma assisted catalytic oxidation NOx over manganese-based catalysts[C]. Kunming: Kunming University of science and technology. (2009).

[11] E. Z. Wei. The research of Direct-current electronics corona oxidation union chemical absorption haze denitrate experiment and mechanism[C]. Zhe Jiang: Zhe Jiang University, (2006).