NOx Removal Performance of TiV 0.1Mn0.1Er0.01Ox Catalyst Prepared by Solution Combustion Method

WANG Zhe; GUAN Bin; LIN He

doi:10.3969/j.issn.10012222.2017.02.002

Vehicle Engine ›› 2017, Vol. 0 ›› Issue (2) : 7-11. DOI: 10.3969/j.issn.10012222.2017.02.002

NO_x Removal Performance of TiV _0.1Mn_0.1Er_0.01O_x Catalyst Prepared by Solution Combustion Method

WANG Zhe, GUAN Bin, LIN He

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Abstract

In order to expand the active temperature window of vanadiumbased catalysts, TiV_0.1O_xcatalyst was prepared with the solution combustion method. New catalysts were formed by adding manganese and erbium element successively, the activity and selectivity of each catalyst were evaluated respectively. The experimental results showed that manganese increased the low temperature activity of vanadiumbased catalysts and decreased its high temperature activity. Erbium increased the
high temperature activities of vanadiumbased catalyst and improved N₂ selectivity. BET specific surface area, hole volume
and hole diameter were analyzed with N₂ adsorption and desorption method, it was found that erbium increased the specific area of vanadiumbased catalysts to promote the activity of catalyst. The XRD patterns of crystal structure showed that the diffraction peaks of VO_x , MnO_x or ErO_xmetal oxides didnot exist, showing that active components were uniformly dispersed on the surface of all the catalysts prepared by solution combustion method. The prepared TiV_0.1Mn_0.1Er_0.01O_x catalyst according to the proportion of manganese and erbium had the best performance of over 80% NO_x removal efficiency between 160 ℃ and 470 ℃.

Key words

nitrogen oxide / selective catalytic reduction (SCR);solution combustion / diesel engine / catalyst

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WANG Zhe, GUAN Bin, LIN He. NO_x Removal Performance of TiV _0.1Mn_0.1Er_0.01O_x Catalyst Prepared by Solution Combustion Method[J]. Vehicle Engine. 2017, 0(2): 7-11 https://doi.org/10.3969/j.issn.10012222.2017.02.002