Engine Performance of Cu- and Fe-Based SCR Emission Control Systems for Heavy Duty Diesel Applications

Castagnola, Mario; Caserta, Jonathan; Chatterjee, Sougato; Chen, Hai-Ying; Conway, Raymond; Fedeyko, Joseph M.; Klink, Wassim; Markatou, Penelope; Shah, Sandip D.; Walker, Andrew P.

doi:10.4271/2011-01-1329

Cited by 15 publications

(8 citation statements)

References 5 publications

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“…It is therefore crucial to examine the effect of sulfur on different components in the aftertreatment system. Several studies [24][25][26][27][28][29][30][31][32] have addressed the impact of sulfur poisoning in ammonia SCR systems. The vanadium-based catalysts were found to have a greater tolerance toward SO 2 poisoning than did the metal zeolite catalysts [24,27,28].…”

Section: Introductionmentioning

confidence: 99%

Impact of sulfur oxide on NH3-SCR over Cu-SAPO-34

Wijayanti

Andonova

Kumar

et al. 2015

Applied Catalysis B: Environmental

119

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Section: Introductionmentioning

confidence: 99%

Impact of sulfur oxide on NH3-SCR over Cu-SAPO-34

Wijayanti

Andonova

Kumar

et al. 2015

Applied Catalysis B: Environmental

119

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“…Several studies [1][2][3][4][5][6][7][8][9] have addressed the effects of sulfur poisoning on different NH 3 -SCR catalysts. Vanadium-based catalysts were found to have a greater tolerance toward SO 2 poisoning than metal zeolite catalysts.…”

Section: Introductionmentioning

confidence: 99%

Migration, reactivity, and sulfur tolerance of copper species in SAPO-34 zeolite toward NO_x reduction with ammonia

Liu

Weng

et al. 2017

RSC Adv.

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“…As a urea SCR catalyst, Cu-zeolite, which has high NOx conversion efficiency at low temperature and low NO 2 :NO ratio condition [7], has already been introduced in the U.S. to meet US10 and is being partially introduced in Europe to meet EURO-VI. In Japan, Cu-zeolite has restricted use.…”

Section: Introductionmentioning

confidence: 99%

Development of High Porosity Cordierite Honeycomb Substrate for SCR Application to Realize High NOx Conversion Efficiency and System Compactness

Hirose

Yamamoto

Suenobu

et al. 2014

SAE Int. J. Mater. Manf.

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Today the Ammonia Selective Catalytic Reduction (SCR) system with good NOx conversion is the emission technology of choice for diesel engines globally. High NOx conversion SCR systems combined with optimized engine calibration not only address the stringent NOx emission limits which have been introduced or are being considered for later this decade, but also reduce CO 2 emissions required by government regulations and the increase in fuel economy required by end-users. Reducing the packaging envelope of today's SCR systems, while retaining or improving NOx conversion and pressure drop, is a key customer demand.High SCR loadings ensure high NOx conversion at very low temperatures. To meet this performance requirement, a High Porosity Substrate which minimizes the pressure drop impact, was introduced in SAE Paper 2012-01-1079 [1], [2], [3]. The High Porosity Substrate with an equivalent catalyst amount demonstrated a pressure drop reduction in SCR substrate against the baseline conventional substrate. Moreover, high porosity substrate with high catalyst amount shows a possibility to achieve high NOx conversion and significant downsizing. As previously proven [4], [5], [6], High CellDensity is an effective way to increase catalyst surface area and NOx conversion at high temperatures due to the mass transfer effect. A High Porosity, High Cell Density Substrate has been developed which offers a notable improvement in NOx conversion over a wide temperature range as well as SCR substrate volume reduction. This paper will define the concept and SCR NOx conversion performance of the new High Porosity with High Cell Density Substrate compared to conventional substrate. The evaluation also includes pressure drop, durability, and potential SCR downsizing.

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Engine Performance of Cu- and Fe-Based SCR Emission Control Systems for Heavy Duty Diesel Applications

Cited by 15 publications

References 5 publications

Impact of sulfur oxide on NH3-SCR over Cu-SAPO-34

Impact of sulfur oxide on NH3-SCR over Cu-SAPO-34

Migration, reactivity, and sulfur tolerance of copper species in SAPO-34 zeolite toward NO_x reduction with ammonia

Development of High Porosity Cordierite Honeycomb Substrate for SCR Application to Realize High NOx Conversion Efficiency and System Compactness

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Engine Performance of Cu- and Fe-Based SCR Emission Control Systems for Heavy Duty Diesel Applications

Cited by 15 publications

References 5 publications

Impact of sulfur oxide on NH3-SCR over Cu-SAPO-34

Impact of sulfur oxide on NH3-SCR over Cu-SAPO-34

Migration, reactivity, and sulfur tolerance of copper species in SAPO-34 zeolite toward NOx reduction with ammonia

Development of High Porosity Cordierite Honeycomb Substrate for SCR Application to Realize High NOx Conversion Efficiency and System Compactness

Contact Info

Product

Resources

About

Migration, reactivity, and sulfur tolerance of copper species in SAPO-34 zeolite toward NO_x reduction with ammonia