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Effect of water vapour on the selectivity in the reduction of nitric oxide with ammonia over vanadia supported on silica-titania

Odenbrand, Ingemar LU ; Gabrielsson, PLT ; Brandin, Jan LU and Andersson, Lars A H LU (1991) In Applied Catalysis 78(1). p.109-123
Abstract
The effect of the presence of water vapor on the reduction of nitric oxide with ammonia was investigated using vanadia on SiO2-TiO2 as a catalyst. The selectivity towards nitrogen is greatly increased upon addition of water. Repeated use at temperatures of 825 K causes sintering of the catalyst and loss of activity as well as selectivity towards nitrogen. The formation of nitrous oxide is preferentially taking place on large crystals of presumably reduced vanadia. Removal of these crystals results in a more selective catalyst.
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author
; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
NITRIC OXIDE REDUCTION, VANADIA, TITANIA SILICA, NITROUS OXIDE, WATER, CRYSTALLINITY, SINTERING
in
Applied Catalysis
volume
78
issue
1
pages
109 - 123
publisher
Elsevier
external identifiers
  • wos:A1991GN67600008
  • scopus:0026237599
ISSN
0166-9834
DOI
10.1016/0166-9834(91)80092-B
language
English
LU publication?
yes
id
2eaf58c1-f2ce-46da-b7da-5922d4e5c5c9 (old id 3916393)
date added to LUP
2016-04-01 15:58:51
date last changed
2023-11-14 02:47:43
@article{2eaf58c1-f2ce-46da-b7da-5922d4e5c5c9,
  abstract     = {{The effect of the presence of water vapor on the reduction of nitric oxide with ammonia was investigated using vanadia on SiO2-TiO2 as a catalyst. The selectivity towards nitrogen is greatly increased upon addition of water. Repeated use at temperatures of 825 K causes sintering of the catalyst and loss of activity as well as selectivity towards nitrogen. The formation of nitrous oxide is preferentially taking place on large crystals of presumably reduced vanadia. Removal of these crystals results in a more selective catalyst.}},
  author       = {{Odenbrand, Ingemar and Gabrielsson, PLT and Brandin, Jan and Andersson, Lars A H}},
  issn         = {{0166-9834}},
  keywords     = {{NITRIC OXIDE REDUCTION; VANADIA; TITANIA SILICA; NITROUS OXIDE; WATER; CRYSTALLINITY; SINTERING}},
  language     = {{eng}},
  number       = {{1}},
  pages        = {{109--123}},
  publisher    = {{Elsevier}},
  series       = {{Applied Catalysis}},
  title        = {{Effect of water vapour on the selectivity in the reduction of nitric oxide with ammonia over vanadia supported on silica-titania}},
  url          = {{http://dx.doi.org/10.1016/0166-9834(91)80092-B}},
  doi          = {{10.1016/0166-9834(91)80092-B}},
  volume       = {{78}},
  year         = {{1991}},
}