Flue gas NOx removal by SCR with NH3 on CuO/AC at low temperatures

Zhu, Zhenping; Liu, Z.Y.; Liu, S.J.; Niu, Hongxian; Hu, Tiandou; Liu, T.; Xian, Yanbo

doi:10.1016/s0167-2991(00)80393-6

Cited by 5 publications

(2 citation statements)

References 2 publications

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“…In this sense, there has been a strong interest in the development of SCR catalysts activating at a temperature lower than 300 °C. Cu-based catalysts have been investigated to improve SCR NOx conversion rate at a low temperature supported on different substrates, such as active carbons [6][7][8], zeolite [9][10][11][12][13], TiO 2 [14], Al 2 O 3 [15,16]. The use of these catalysts has shown an improvement of SCR activity to certain degree at a temperature below 250 °C under different conditions.Mn has been studied as the catalyst [17][18][19][20] or promoter [21] for the low temperature SCR reaction and shows a good NO conversion rate.…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Performance of V-W Based Catalysts at Low Temperature for NOx Reduction with NH<sub>3</sub>

Tian

Xiao

Zhang

et al. 2011

AMR

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The most potential method of selective catalytic reduction (SCR) to remove NOx from diesel engine emissions is very effective in NOx reduction with an efficiency up to 95%. However, the current SCRs have a limitation on operation temperature and a narrow operation temperature window. In this paper, the V-W based catalysts were used in the investigation to improve the low temperature performance of NOx conversion by doping Cu and Mn into V-W based catalyst. The temperature range studied was between 150 °C and 550 °C with an interval of 50 °C. The honeycomb catalysts were prepared by an impregnation method. The study also included characterization of catalysts by BET, XRD, TPD and XPS methods.It is found that NOx conversion performance of the V-W based catalyst increases with the increase of reaction temperature. After the metal Cu or Mn doped into the catalyst, it offers an improvement in the catalytic performance. Among all the catalysts studied, the mixed metal catalyst of Cu-Mn-V-W catalyst is found the most potential one, not only because of its higher NOx conversion rate at a low temperature, but also because of its wider operation temperature window.

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Section: Introductionmentioning

confidence: 99%

Investigation of the Performance of V-W Based Catalysts at Low Temperature for NOx Reduction with NH<sub>3</sub>

Tian

Xiao

Zhang

et al. 2011

AMR

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“…Transition metal Cu based catalysts had been investigated as a cheaper and efficient catalyst for the NOx removal in an SCR at a low temperature [10]. Cu-based catalysts have been investigated to improve SCR NOx conversion rate at a low temperature supported on different substrates, such as active carbons [11][12][13], zeolite [14][15][16][17][18], TiO 2 [19], Al 2 O 3 [20,21]. The use of these catalysts has shown an improvement of SCR activity to certain degree at a temperature below 250 °C under different conditions.…”

Section: Introductionmentioning

confidence: 99%

Investigation of Catalyst Copper Supported on Ceramic Honeycomb Substrate for the SCR of NO

Xiao

Zhou

Zhang

et al. 2009

2009 3rd International Conference on Bioinformatics and Biomedical Engineering

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Selective catalytic reduction (SCR) with ammonia is a well-proven technique for NOx removal and it is very effective in NOx reduction with an efficient up to 98%. However, the current SCR catalyst has a limitation on operation temperature and a narrow operation temperature window. The paper presents the results of a study on catalyst Cu Supported on ceramic honeycomb substrate to investigate the low temperature performance of exiting SCR systems. The study also includes preparation, activity tests and characterization of the selected catalysts, as well as the effects of H 2 O, GHSV and calcinations temperature on the activity of the catalysts in ammonia selective catalytic reduction reaction with an excess of oxygen. Results show that an effective conversion of NOx can be achieved a temperature range of 200 °C to 350°C by using Cu-Ni-Ce catalyst with ammonia as the reductant.

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The positive effect of siderite-derived α-Fe2O3 during coaling on the NO behavior in the presence of NH3

Shu

Chen

et al. 2020

Environ Sci Pollut Res

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Flue gas NOx removal by SCR with NH3 on CuO/AC at low temperatures

Cited by 5 publications

References 2 publications

Investigation of the Performance of V-W Based Catalysts at Low Temperature for NOx Reduction with NH<sub>3</sub>

Investigation of the Performance of V-W Based Catalysts at Low Temperature for NOx Reduction with NH<sub>3</sub>

Investigation of Catalyst Copper Supported on Ceramic Honeycomb Substrate for the SCR of NO

The positive effect of siderite-derived α-Fe2O3 during coaling on the NO behavior in the presence of NH3

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