Selective catalytic reduction of NOx in diesel exhaust gases with NH3 over Ce & Cu mordenite and V2O5/TiO2/WO3 type catalysts: Can Ce solve the NH3 slip problem?

1995 ◽  
pp. 645-653 ◽  
Author(s):  
R.J. Hultermans ◽  
E. Ito ◽  
Á József ◽  
P.M. Lugt ◽  
C.M. van den Bleek
Keyword(s):  
Selective Catalytic Reduction ◽  
Diesel Exhaust ◽  
Catalytic Reduction ◽  
Exhaust Gases ◽  
Reduction Of Nox

Recent progress of metal-exchanged zeolites for selective catalytic reduction of NOx with NH3 in diesel exhaust

Fuel ◽  
2021 ◽  
Vol 305 ◽  
pp. 121482
Author(s):  
Xiaofeng Wang ◽  
Yang Xu ◽  
Zhe Zhao ◽  
Jianbin Liao ◽  
Chen Chen ◽  
...  
Keyword(s):  
Selective Catalytic Reduction ◽  
Diesel Exhaust ◽  
Recent Progress ◽  
Catalytic Reduction ◽  
Reduction Of Nox

scholarly journals Reduction of NOx Emission of a Diesel Engine with a Multiple Injection Pump by SCR Catalytic Converter

2016 ◽  
Vol 64 (4) ◽  
pp. 1205-1210 ◽  
Author(s):  
Vít Marek ◽  
Lukáš Tunka ◽  
Adam Polcar ◽  
Dušan Slimařík
Keyword(s):  
Diesel Engine ◽  
Selective Catalytic Reduction ◽  
Catalytic Reduction ◽  
Catalytic Converter ◽  
Nox Emission ◽  
Multiple Injection ◽  
Scr Catalyst ◽  
Exhaust Gases ◽  
Injection Pump ◽  
Reduction Of Nox

This paper deals with reduction of NOx-emission of a diesel engine with multiple injection pump by SCR catalytic converter. Main aim of the measurement was the detection of SCR catalyst converter efficiency. Tests were realized at the Research and Development workplace of Zetor Tractor a.s. Used engine was equipped with a multiple injection pump with electromagnetic regulator of a fuel charge. During the experiment selective catalytic reduction and diesel particulate filter were used as an after treatment of harmful pollutants reduction. Testing cycle of the eight-point test was chosen and Non-Road Steady Cycle (NRSC) was maintained according to 97/68/EC directive. Results confirmed the dependencies between temperatures of SCR catalyst and exhaust gases and the volume of exhaust gases on efficiency of SCR catalyst. During the operation load of the engine, selective catalytic reduction reached efficiency over 90 %. Used after treatment system is suitable for reduction of harmful pollutants according to the Tier 4f norm.

Ce-ZSM-5 catalysts for the selective catalytic reduction of NOx in stationary diesel exhaust gas

1999 ◽  
Vol 21 (3) ◽  
pp. 203-213 ◽  
Author(s):  
W.E.J. van Kooten ◽  
B. Liang ◽  
H.C. Krijnsen ◽  
O.L. Oudshoorn ◽  
H.P.A. Calis ◽  
...  
Keyword(s):  
Selective Catalytic Reduction ◽  
Diesel Exhaust ◽  
Catalytic Reduction ◽  
Exhaust Gas ◽  
Reduction Of Nox

scholarly journals Selective Catalytic Reduction of NOx from Diesel Exhaust Gas.

1995 ◽  
Vol 61 (582) ◽  
pp. 772-778
Author(s):  
Takaaki Morimune ◽  
Hajime Yamaguchi ◽  
Shinryo Ka ◽  
Yukio Yasukawa
Keyword(s):  
Selective Catalytic Reduction ◽  
Diesel Exhaust ◽  
Catalytic Reduction ◽  
Exhaust Gas ◽  
Reduction Of Nox

scholarly journals Modeling of Urea Decomposition in Selective Catalytic Reduction (SCR) for Systems of Diesel Exhaust Gases Aftertreatment by Finite Volume Method

Catalysts ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 749
Author(s):  
Filip Kuternowski ◽  
Maciej Staszak ◽  
Katarzyna Staszak
Keyword(s):  
Finite Volume Method ◽  
Selective Catalytic Reduction ◽  
Finite Volume ◽  
Diesel Exhaust ◽  
Catalytic Reduction ◽  
Water Solution ◽  
Process Conditions ◽  
Actual Process ◽  
Exhaust Gases ◽  
Volume Method

This study presents modeling of selective catalytic reduction (SCR) for systems of diesel exhaust gases aftertreatment. The main purpose of this work is to develop the modeling approach that allows accurate prediction of urea–water solution behavior (UWS) in the real diesel exhausts in temperature range 373 K to 873 K. The UWS is a key element of catalytic reduction of diesel NOx which utilizes ammonia as reducing specie. The finite volume method (FVM) extended by the nonrandom two liquids (NRTL) phase equilibrium model was used to perform the calculations. The results obtained were verified with experimental measurements. The comparison show that the NRTL extension introduced in this work allows reproducing the actual process conditions in the diesel exhaust environment. The accuracy of the results permits the model to be used for the design purposes and simulation approaches as well.

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