Experimental Study of NOx Storage/Reduction (NSR) Using DME as Reducer

Abstract

Abstract: Using Pt/Co-BaO/γ^-Al₂O₃ as the catalyst, dimethyl ether (DME) as the reductant, this paper investigated the NOx storage-reduction (NSR) percormance and the influence of the reduction time and temperature on the DME-NSR. The result indicates that the NOx conversion ratio for NOx can be kept between 60%~70%. Then the influence of DME on the thermal stability of the stored NOx over the NSR catalyst was investigated by using the temperature programmed desorption (TPD) and DME temperature programmed surface reaction (DME-TPSR). The result indicates that DME can promote the decomposition of the nitrate over the catalyst, and then react with the decomposed NOx.

Key words: dimethyl ether (DME), NOx storage-reduction (NSR), temperature programmed desorption (TPD), temperature programmed surface reaction (TPSR)

CLC Number:

TK 411.5

ZHOU Xiang-Man, CHEN Xiao-Ling, WU Jiao, WU Min-Chao, QIN Ping, ZHANG Wu-Gao. Experimental Study of NOx Storage/Reduction (NSR) Using DME as Reducer[J]. Journal of Shanghai Jiaotong University, 2012, 46(05): 666-670.

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