Deactivating effects of lead on the selective catalytic reduction of nitric oxide with ammonia over a V2O5/WO3/TiO2 catalyst for waste incineration applications
(1998) In Industrial & Engineering Chemistry Research 37(4). p.1196-1202- Abstract
- Lead is one of the poisonous elements for de-NOx catalysts especially in the case of municipal waste incineration plants. Samples of a commercial selective catalytic reduction catalyst were impregnated with different amounts of Pb(NO3)(2), and their catalytic activities were studied. The XPS and SEM analysis showed higher lead concentration on the outer surface of the monolith than on the inside of the wall for all samples. Pb covers the surface of inactive TiO2 sites, likewise active V2O5/WO3 sites, in a thin, noncrystalline layer. Both activity and NH3 chemisorbed decreased in the same manner with increasing poison coverage. This suggests that the area available for reaction was the same or at least proportional to that for the... (More)
- Lead is one of the poisonous elements for de-NOx catalysts especially in the case of municipal waste incineration plants. Samples of a commercial selective catalytic reduction catalyst were impregnated with different amounts of Pb(NO3)(2), and their catalytic activities were studied. The XPS and SEM analysis showed higher lead concentration on the outer surface of the monolith than on the inside of the wall for all samples. Pb covers the surface of inactive TiO2 sites, likewise active V2O5/WO3 sites, in a thin, noncrystalline layer. Both activity and NH3 chemisorbed decreased in the same manner with increasing poison coverage. This suggests that the area available for reaction was the same or at least proportional to that for the adsorption of NH3 and deactivation of the catalyst may be due to competitive chemisorption of the poison on the acid sites instead of by pore blocking. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/3916349
- author
- Khodayari, R and Odenbrand, Ingemar LU
- organization
- publishing date
- 1998
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Industrial & Engineering Chemistry Research
- volume
- 37
- issue
- 4
- pages
- 1196 - 1202
- publisher
- The American Chemical Society (ACS)
- external identifiers
-
- wos:000073101700003
- scopus:0032050607
- ISSN
- 0888-5885
- DOI
- 10.1021/ie9706065
- language
- English
- LU publication?
- yes
- id
- 3b18d920-f359-4d62-a63c-8eb1ed89086c (old id 3916349)
- date added to LUP
- 2016-04-01 17:12:03
- date last changed
- 2023-11-15 01:26:56
@article{3b18d920-f359-4d62-a63c-8eb1ed89086c,
abstract = {{Lead is one of the poisonous elements for de-NOx catalysts especially in the case of municipal waste incineration plants. Samples of a commercial selective catalytic reduction catalyst were impregnated with different amounts of Pb(NO3)(2), and their catalytic activities were studied. The XPS and SEM analysis showed higher lead concentration on the outer surface of the monolith than on the inside of the wall for all samples. Pb covers the surface of inactive TiO2 sites, likewise active V2O5/WO3 sites, in a thin, noncrystalline layer. Both activity and NH3 chemisorbed decreased in the same manner with increasing poison coverage. This suggests that the area available for reaction was the same or at least proportional to that for the adsorption of NH3 and deactivation of the catalyst may be due to competitive chemisorption of the poison on the acid sites instead of by pore blocking.}},
author = {{Khodayari, R and Odenbrand, Ingemar}},
issn = {{0888-5885}},
language = {{eng}},
number = {{4}},
pages = {{1196--1202}},
publisher = {{The American Chemical Society (ACS)}},
series = {{Industrial & Engineering Chemistry Research}},
title = {{Deactivating effects of lead on the selective catalytic reduction of nitric oxide with ammonia over a V2O5/WO3/TiO2 catalyst for waste incineration applications}},
url = {{http://dx.doi.org/10.1021/ie9706065}},
doi = {{10.1021/ie9706065}},
volume = {{37}},
year = {{1998}},
}