REMOVAL OF NITROGEN OXIDES FROM DIESEL EXHAUST: LABORATORY STUDIES FOR DEVELOPMENT OF AN SCR-CATALYST-SYSTEM USING SOLID UREA AS REDUCING AGENT

2002 ◽  
Vol 1 (2) ◽  
pp. 119-137 ◽  
Author(s):  
Werner Weisweiler
Keyword(s):  
Nitrogen Oxides ◽  
Diesel Exhaust ◽  
Catalyst System ◽  
Reducing Agent ◽  
Laboratory Studies ◽  
Scr Catalyst

Catalyst system for the reduction of nitrogen oxides in diesel exhaust

Zeolites ◽  
1997 ◽  
Vol 18 (2-3) ◽  
pp. 234
Author(s):  
G. Schenkermayr ◽  
H. Eichiseder
Keyword(s):  
Nitrogen Oxides ◽  
Diesel Exhaust ◽  
Catalyst System

Destruction of Carbonaceous Material and Nitrogen Oxides in Conditions of Diesel Exhaust

1993 ◽  
Author(s):  
Patrick Gilot ◽  
Frederic Bonnefoy ◽  
Remy Noirot ◽  
Gilles Prado
Keyword(s):  
Nitrogen Oxides ◽  
Diesel Exhaust ◽  
Carbonaceous Material

Reduction of nitrogen oxides over unsupported iridium: effect of reducing agent

2001 ◽  
Vol 34 (1) ◽  
pp. 11-27 ◽  
Author(s):  
C Wögerbauer ◽  
M Maciejewski ◽  
A Baiker
Keyword(s):  
Nitrogen Oxides ◽  
Reducing Agent

Modification of V2O5-WO3/TiO2 Catalysts Supported on SiC Filter for NO Reduction at Low Temperature

2007 ◽  
Vol 124-126 ◽  
pp. 1713-1716 ◽  
Author(s):  
Youn Gae Kim ◽  
Joo Hong Choi ◽  
Liang Yu ◽  
Young Cheoul Bak
Keyword(s):  
No Reduction ◽  
Catalyst System ◽  
Ceramic Filter ◽  
Commercial Catalyst ◽  
Scr Catalyst ◽  
Catalytic Filter ◽  
Temperature Window ◽  
Face Velocity ◽  
The One ◽  
Optimum Working

The catalytic filter, a ceramic filter supported SCR catalyst, is a promising material for treating particulates and NOX simultaneously. Recently, it is found that a SiC filter supported V2O5- WO3-TiO2 [commercial catalyst system] shows a reasonable SCR activity around 320 °C [1]. In order to improve its catalytic activity at low temperatures, the effects of Pt and MnOX addition on the catalytic filter are investigated. The macro-porous TiO2 film was firstly coated on the pore surface of SiC filter element using the solution composed of the preformed TiO2 particles (P25). Catalytic filters were prepared by the impregnation of TiO2 coated-SiC filter in the solution containing the catalyst components. The MnOX-added catalytic filter showed very wide temperature window from 150-340 °C, providing NX slip concentration less than 20 ppm for the treatment of 700 ppm NO at a face velocity of 2 cm/s. Pt added-catalytic filter shifted the optimum working temperature towards the lower temperatures (180-240 °C) compared to the one without Pt (280-330 °C). It is understood that MnOX in the catalyst system roles as the main catalyst component while Pt rose as a electron modification additive.

Sign in / Sign up

Export Citation Format

Share Document