NO Selective Reduction by H2 over Pt Supported ZSM-35/MCM-49

doi:10.7503/cjcu20130203

Chem. J. Chinese Universities ›› 2013, Vol. 34 ›› Issue (8): 1919.doi: 10.7503/cjcu20130203

• Physical Chemistry • Previous Articles Next Articles

NO Selective Reduction by H₂ over Pt Supported ZSM-35/MCM-49

YU Qing¹, WANG Zhong-Wei¹, LI Lan-Dong², WU Guang-Jun², GUAN Nai-Jia²

1. College of Material Science and Technology, Shandong University of Science and Technology, Qingdao 266590, China;
2. Institute of New Catalytic Materials Science, College of Chemistry, Nankai University, Tianjin 300071, China

Received:2013-03-07 Online:2013-08-10 Published:2013-07-19

Abstract

Abstract:

Composite zeolite was used as support in NO_x elimination. The catalytic performances of Pt/ZSM-35/MCM-49, Pt/ZSM-35 and Pt/MCM-49 were studied on the condition of 0.1%NO, 0.5%H₂, 6.7%O₂, He as balance gas and GHSV=8×10⁴ h^-1. The results show that the activity of Pt/ZSM-35/MCM-49 is higher than the other two catalysts: the maximum NO conversion and N₂ selectivity reaches 84% and 74%, respectively. XRD, H₂-TPR, CO adsorption and in situ FTIR were employed to characterize these three catalysts. The results indicate that the enhancement of activity comes from the co-crystallization, which is benefit for the formation and stabilization of key intermediates, ammonium species.

Key words: ZSM-35/MCM-49 catalyst, H₂, NO reduction, Pt

CLC Number:

O643

TrendMD:

YU Qing, WANG Zhong-Wei, LI Lan-Dong, WU Guang-Jun, GUAN Nai-Jia. NO Selective Reduction by H₂ over Pt Supported ZSM-35/MCM-49[J]. Chem. J. Chinese Universities, 2013, 34(8): 1919.

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NO Selective Reduction by H₂ over Pt Supported ZSM-35/MCM-49

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