Selective catalytic reduction of NOx emissions from a 5.9 liter diesel engine using ethanol as a reductant

Michael D. Kass; John F. Thomas; Samuel A. Lewis; John M. Storey; Norberto Domingo; Ron L. Graves; Alexander Panov; Paul Park

doi:10.4271/2003-01-3244

Selective catalytic reduction of NOx emissions from a 5.9 liter diesel engine using ethanol as a reductant

Michael D. Kass, John F. Thomas, Samuel A. Lewis, John M. Storey, Norberto Domingo, Ron L. Graves, Alexander Panov, Paul Park

Fuel Science & Engine Technologies Resea

Research output: Contribution to journal › Conference article › peer-review

7 Scopus citations

Abstract

NOx emissions from a heavy-duty diesel engine were reduced by more than 90% and 80% utilizing a full-scale ethanol-SCR system for space velocities of 21000/h and 57000/h respectively. These results were achieved for catalyst temperatures between 360 and 400°C and for C1:NOx ratios of 4-6. The SCR process appears to rapidly convert ethanol to acetaldehyde, which subsequently slipped past the catalyst at appreciable levels at a space velocity of 57000/h. Ammonia and N₂O were produced during conversion; the concentrations of each were higher for the low space velocity condition. However, the concentration of N₂O did not exceed 10 ppm. In contrast to other catalyst technologies, NOx reduction appeared to be enhanced by initial catalyst aging, with the presumed mechanism being sulfate accumulation within the catalyst. A concept for utilizing ethanol (distilled from an E-diesel fuel) as the SCR reductant was demonstrated.

Original language	English
Journal	SAE Technical Papers
DOIs	https://doi.org/10.4271/2003-01-3244
State	Published - 2003
Event	Powertrain and Fluid Systems Conference and Exhibition - Pittsburgh, PA, United States Duration: Oct 27 2003 → Oct 30 2003

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title = "Selective catalytic reduction of NOx emissions from a 5.9 liter diesel engine using ethanol as a reductant",

abstract = "NOx emissions from a heavy-duty diesel engine were reduced by more than 90% and 80% utilizing a full-scale ethanol-SCR system for space velocities of 21000/h and 57000/h respectively. These results were achieved for catalyst temperatures between 360 and 400°C and for C1:NOx ratios of 4-6. The SCR process appears to rapidly convert ethanol to acetaldehyde, which subsequently slipped past the catalyst at appreciable levels at a space velocity of 57000/h. Ammonia and N2O were produced during conversion; the concentrations of each were higher for the low space velocity condition. However, the concentration of N2O did not exceed 10 ppm. In contrast to other catalyst technologies, NOx reduction appeared to be enhanced by initial catalyst aging, with the presumed mechanism being sulfate accumulation within the catalyst. A concept for utilizing ethanol (distilled from an E-diesel fuel) as the SCR reductant was demonstrated.",

author = "Kass, {Michael D.} and Thomas, {John F.} and Lewis, {Samuel A.} and Storey, {John M.} and Norberto Domingo and Graves, {Ron L.} and Alexander Panov and Paul Park",

year = "2003",

doi = "10.4271/2003-01-3244",

language = "English",

journal = "SAE Technical Papers",

issn = "0148-7191",

publisher = "SAE International",

note = "Powertrain and Fluid Systems Conference and Exhibition ; Conference date: 27-10-2003 Through 30-10-2003",

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TY - JOUR

T1 - Selective catalytic reduction of NOx emissions from a 5.9 liter diesel engine using ethanol as a reductant

AU - Kass, Michael D.

AU - Thomas, John F.

AU - Lewis, Samuel A.

AU - Storey, John M.

AU - Domingo, Norberto

AU - Graves, Ron L.

AU - Panov, Alexander

AU - Park, Paul

PY - 2003

Y1 - 2003

N2 - NOx emissions from a heavy-duty diesel engine were reduced by more than 90% and 80% utilizing a full-scale ethanol-SCR system for space velocities of 21000/h and 57000/h respectively. These results were achieved for catalyst temperatures between 360 and 400°C and for C1:NOx ratios of 4-6. The SCR process appears to rapidly convert ethanol to acetaldehyde, which subsequently slipped past the catalyst at appreciable levels at a space velocity of 57000/h. Ammonia and N2O were produced during conversion; the concentrations of each were higher for the low space velocity condition. However, the concentration of N2O did not exceed 10 ppm. In contrast to other catalyst technologies, NOx reduction appeared to be enhanced by initial catalyst aging, with the presumed mechanism being sulfate accumulation within the catalyst. A concept for utilizing ethanol (distilled from an E-diesel fuel) as the SCR reductant was demonstrated.

AB - NOx emissions from a heavy-duty diesel engine were reduced by more than 90% and 80% utilizing a full-scale ethanol-SCR system for space velocities of 21000/h and 57000/h respectively. These results were achieved for catalyst temperatures between 360 and 400°C and for C1:NOx ratios of 4-6. The SCR process appears to rapidly convert ethanol to acetaldehyde, which subsequently slipped past the catalyst at appreciable levels at a space velocity of 57000/h. Ammonia and N2O were produced during conversion; the concentrations of each were higher for the low space velocity condition. However, the concentration of N2O did not exceed 10 ppm. In contrast to other catalyst technologies, NOx reduction appeared to be enhanced by initial catalyst aging, with the presumed mechanism being sulfate accumulation within the catalyst. A concept for utilizing ethanol (distilled from an E-diesel fuel) as the SCR reductant was demonstrated.

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U2 - 10.4271/2003-01-3244

DO - 10.4271/2003-01-3244

M3 - Conference article

AN - SCOPUS:85072438997

SN - 0148-7191

JO - SAE Technical Papers

JF - SAE Technical Papers

T2 - Powertrain and Fluid Systems Conference and Exhibition

Y2 - 27 October 2003 through 30 October 2003

ER -

Selective catalytic reduction of NOx emissions from a 5.9 liter diesel engine using ethanol as a reductant

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