Advanced

Preferential oxidation of carbon monoxide on mounted and unmounted noble-metal catalysts in hydrogen-rich streams

Hulteberg, Christian LU ; Brandin, J G M; Silversand, F A and Lundberg, Mats LU (2005) In International Journal of Hydrogen Energy 30(11). p.1235-1242
Abstract
A number of different noble metal catalysts were studied for activity in the preferential oxidation of carbon monoxide in hydrogen-rich streams. The prepared catalysts had an active phase of platinum, palladium, iridium, ruthenium or rhodium impregnated either directly on an aluminia matrix or mounted on nickel or cobalt oxide. The catalysts were studied for activity, but also for the reversed water gas shift side reaction. The most active catalyst was platinum mounted on cobalt oxide and it was studied closely. The platinum on the cobalt oxide was studied using STEM with XEDS and the effects of the platinum cluster size were investigated. Via microscopy it was possible to show that platinum had no preference for either alumina or cobalt.... (More)
A number of different noble metal catalysts were studied for activity in the preferential oxidation of carbon monoxide in hydrogen-rich streams. The prepared catalysts had an active phase of platinum, palladium, iridium, ruthenium or rhodium impregnated either directly on an aluminia matrix or mounted on nickel or cobalt oxide. The catalysts were studied for activity, but also for the reversed water gas shift side reaction. The most active catalyst was platinum mounted on cobalt oxide and it was studied closely. The platinum on the cobalt oxide was studied using STEM with XEDS and the effects of the platinum cluster size were investigated. Via microscopy it was possible to show that platinum had no preference for either alumina or cobalt. The activity increased with increasing platinum cluster size but the selectivity passed through a maximum, a probable deactivation mechanism to the catalyst on stream, showed on a 1,000 h deactivated sample. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
International Journal of Hydrogen Energy
volume
30
issue
11
pages
1235 - 1242
publisher
Elsevier
external identifiers
  • wos:000231074300005
  • scopus:22244456389
ISSN
1879-3487
DOI
10.1016/j.ijhydene.2005.04.054
language
English
LU publication?
yes
id
18759f43-2772-4d2e-a0c5-cbc20144c9f3 (old id 156467)
date added to LUP
2007-06-25 11:20:48
date last changed
2017-10-01 04:36:46
@article{18759f43-2772-4d2e-a0c5-cbc20144c9f3,
  abstract     = {A number of different noble metal catalysts were studied for activity in the preferential oxidation of carbon monoxide in hydrogen-rich streams. The prepared catalysts had an active phase of platinum, palladium, iridium, ruthenium or rhodium impregnated either directly on an aluminia matrix or mounted on nickel or cobalt oxide. The catalysts were studied for activity, but also for the reversed water gas shift side reaction. The most active catalyst was platinum mounted on cobalt oxide and it was studied closely. The platinum on the cobalt oxide was studied using STEM with XEDS and the effects of the platinum cluster size were investigated. Via microscopy it was possible to show that platinum had no preference for either alumina or cobalt. The activity increased with increasing platinum cluster size but the selectivity passed through a maximum, a probable deactivation mechanism to the catalyst on stream, showed on a 1,000 h deactivated sample.},
  author       = {Hulteberg, Christian and Brandin, J G M and Silversand, F A and Lundberg, Mats},
  issn         = {1879-3487},
  language     = {eng},
  number       = {11},
  pages        = {1235--1242},
  publisher    = {Elsevier},
  series       = {International Journal of Hydrogen Energy},
  title        = {Preferential oxidation of carbon monoxide on mounted and unmounted noble-metal catalysts in hydrogen-rich streams},
  url          = {http://dx.doi.org/10.1016/j.ijhydene.2005.04.054},
  volume       = {30},
  year         = {2005},
}