Reducing NOx in diesel exhausts by SCR technique: Experiments and simulations
(1994) In AIChE Journal 40(11). p.1911-1919- Abstract
- Results of experiments are compared to simulations of the performance of V2O5/gamma-alumina SCR catalyst used to remove nitrogen oxides from diesel exhausts. The kinetic model is based on Eley-Rideal kinetics. Temperature programmed desorption (TPD) of the ammonia is used to evaluate adsorption/desorption parameters. Stationary experiments on a 3.6-dm(3) engine with a 4.8-dm(3) honeycomb catalyst is used to evaluate kinetic rate parameters for the reduction of NO with NH3. The desorption activation energy, E(a,des), is best fitted as a function of surface coverage yielding E(a,des) = 240 * (1-0.44 * theta(NH3)(0.36)) kJ/mol. A dynamic test (FTP) with a 12-dm(3) engine and 24.8-dm(3) honeycomb catalyst is done with a stoichiometric... (More)
- Results of experiments are compared to simulations of the performance of V2O5/gamma-alumina SCR catalyst used to remove nitrogen oxides from diesel exhausts. The kinetic model is based on Eley-Rideal kinetics. Temperature programmed desorption (TPD) of the ammonia is used to evaluate adsorption/desorption parameters. Stationary experiments on a 3.6-dm(3) engine with a 4.8-dm(3) honeycomb catalyst is used to evaluate kinetic rate parameters for the reduction of NO with NH3. The desorption activation energy, E(a,des), is best fitted as a function of surface coverage yielding E(a,des) = 240 * (1-0.44 * theta(NH3)(0.36)) kJ/mol. A dynamic test (FTP) with a 12-dm(3) engine and 24.8-dm(3) honeycomb catalyst is done with a stoichiometric injection of ammonia. The NOx conversion is 52%, but during the freeway traffic the conversion reached 72%. The prediction of NOx conversion is good, but there are some deviations for temperature and ammonia slip. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/3916377
- author
- Andersson, SL ; Gabrielsson, P and Odenbrand, Ingemar LU
- organization
- publishing date
- 1994
- type
- Contribution to journal
- publication status
- published
- subject
- in
- AIChE Journal
- volume
- 40
- issue
- 11
- pages
- 1911 - 1919
- publisher
- John Wiley & Sons Inc.
- external identifiers
-
- wos:A1994PP89700014
- scopus:0028539308
- ISSN
- 1547-5905
- DOI
- 10.1002/aic.690401115
- language
- English
- LU publication?
- yes
- id
- 3579b42f-a27a-4e9f-a6ad-c85baf79b753 (old id 3916377)
- date added to LUP
- 2016-04-01 11:38:23
- date last changed
- 2023-09-01 01:19:51
@article{3579b42f-a27a-4e9f-a6ad-c85baf79b753,
abstract = {{Results of experiments are compared to simulations of the performance of V2O5/gamma-alumina SCR catalyst used to remove nitrogen oxides from diesel exhausts. The kinetic model is based on Eley-Rideal kinetics. Temperature programmed desorption (TPD) of the ammonia is used to evaluate adsorption/desorption parameters. Stationary experiments on a 3.6-dm(3) engine with a 4.8-dm(3) honeycomb catalyst is used to evaluate kinetic rate parameters for the reduction of NO with NH3. The desorption activation energy, E(a,des), is best fitted as a function of surface coverage yielding E(a,des) = 240 * (1-0.44 * theta(NH3)(0.36)) kJ/mol. A dynamic test (FTP) with a 12-dm(3) engine and 24.8-dm(3) honeycomb catalyst is done with a stoichiometric injection of ammonia. The NOx conversion is 52%, but during the freeway traffic the conversion reached 72%. The prediction of NOx conversion is good, but there are some deviations for temperature and ammonia slip.}},
author = {{Andersson, SL and Gabrielsson, P and Odenbrand, Ingemar}},
issn = {{1547-5905}},
language = {{eng}},
number = {{11}},
pages = {{1911--1919}},
publisher = {{John Wiley & Sons Inc.}},
series = {{AIChE Journal}},
title = {{Reducing NOx in diesel exhausts by SCR technique: Experiments and simulations}},
url = {{http://dx.doi.org/10.1002/aic.690401115}},
doi = {{10.1002/aic.690401115}},
volume = {{40}},
year = {{1994}},
}