ChemInform Abstract: Performance of Silica-Supported Copper Oxide Sorbents for SO /NO - Removal from Flue Gas. Part 2. Selective Catalytic Reduction of Nitric Oxide by Ammonia.

Various types of carbon-based and non-carbon-based catalyst supports for nitric oxide (NO) removal through selective catalytic reduction (SCR) with ammonia are examined in this review. A number of carbon-based materials, such as carbon nanotubes (CNTs), activated carbon (AC), and graphene (GR) and non-carbon-based materials, such as Zeolite Socony Mobil–5 (ZSM-5), TiO2, and Al2O3 supported materials, were identified as the most up-to-date and recently used catalysts for the removal of NO gas. The main focus of this review is the study of catalyst preparation methods, as this is highly correlated to the behaviour of NO removal. The general mechanisms involved in the system, the Langmuir–Hinshelwood or Eley–Riedeal mechanism, are also discussed. Characterisation analysis affecting the surface and chemical structure of the catalyst is also detailed in this work. Finally, a few major conclusions are drawn and future directions for work on the advancement of the SCR-NH3 catalyst are suggested.

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Selective catalytic reduction of nitric oxide over copper oxide and cerium oxide catalysts

International Journal of Environment and Pollution ◽

10.1504/ijep.2002.000657 ◽

2002 ◽

Vol 17 (1/2) ◽

pp. 44 ◽

Cited By ~ 1

Author(s):

Sheila W. Hedges ◽

Henry W. Pennline

Keyword(s):

Nitric Oxide ◽

Copper Oxide ◽

Selective Catalytic Reduction ◽

Cerium Oxide ◽

Catalytic Reduction ◽

Oxide Catalysts

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Cold selective catalytic reduction of nitric oxide for flue gas applications

Industrial & Engineering Chemistry Research ◽

10.1021/ie00103a049 ◽

1990 ◽

Vol 29 (7) ◽

pp. 1431-1435 ◽

Cited By ~ 30

Author(s):

J. P. Chen ◽

R. T. Yang ◽

M. A. Buzanowski ◽

J. E. Cichanowicz

Keyword(s):

Nitric Oxide ◽

Selective Catalytic Reduction ◽

Flue Gas ◽

Catalytic Reduction

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The DeNOx Characteristics of V/Ti Plate SCR Catalysts

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.356-360.1712 ◽

2011 ◽

Vol 356-360 ◽

pp. 1712-1715

Author(s):

Qiang Lu ◽

Shu Hua Su ◽

Shi Ye Fen ◽

Wei Liang Cheng ◽

Chang Qing Dong

Keyword(s):

Nitric Oxide ◽

Catalytic Activity ◽

Selective Catalytic Reduction ◽

Flue Gas ◽

Catalytic Reduction ◽

Incipient Wetness Impregnation ◽

Impregnation Method ◽

Negative Effects ◽

V2o5 Content ◽

Scr Catalysts

A series of V2O5/WO3/TiO2plate catalysts were prepared via the incipient wetness impregnation method, with the V2O5content of 0.68 wt%, 1.01 wt%, 1.19 wt%, 1.5 wt% and the WO3loading of 4.8 wt%, 6.2 wt%, 7.9 wt%, 9.2 wt%, respectively. Selective catalytic reduction of nitric oxide by ammonia (NH3-SCR) experiments were performed to investigate the effects of the several factors on the performance of the catalysts, including the V2O5, WO3and MoO3content in the catalysts and the O2concentration in the flue gas. The results indicated that as the rising of the V2O5 content, the SCR activity of the V2O5/WO3/TiO2catalysts was firstly increased and then slightly decreased, with the best activity obtained at the V2O5content of 1.19 wt%. As the increasing of the WO3content, the activity was firstly increased slightly and then almost kept constant. Furthermore, the loading of the MoO3on the V2O5/WO3/TiO2plate catalysts would bring negative effects to the catalytic activity. In addition, the capability of the catalysts would slightly increase as the O2concentration rising up to 7%, and then became stable at higher O2concentrations.

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