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Pilot-scale investigation of Pt/alumina catalysts deactivation by organosilicon in the total oxidation of hydrocarbons

Larsson, AC; Rahmani, M; Arnby, K; Sohrabi, M; Skoglundh, M; Cruise, N and Sanati, Mehri LU (2007) In Topics in Catalysis 45(1-4). p.121-124
Abstract
The deactivation of alumina-supported platinum catalyst for VOC oxidation by long-term exposure for hexamethyldisiloxane (HMDS) has been investigated in a pilot scale reactor for up to 1000 h of exposure. Catalyst samples were characterized by ICP-AES, BET and silicon deposition by SEM. Catalyst activity was investigated using oxidation of ethyl acetate showing deactivation of the catalyst samples as exposed to HMDS increasing with exposure time. Silicon was shown to deposit on the catalyst as well as on the blank alumina support. SEM investigation of an individual pellet revealed a radial eggshell silicon distribution. CO chemisorption showed strong decrease of Pt active sites after deactivation, while still maintaining reasonable... (More)
The deactivation of alumina-supported platinum catalyst for VOC oxidation by long-term exposure for hexamethyldisiloxane (HMDS) has been investigated in a pilot scale reactor for up to 1000 h of exposure. Catalyst samples were characterized by ICP-AES, BET and silicon deposition by SEM. Catalyst activity was investigated using oxidation of ethyl acetate showing deactivation of the catalyst samples as exposed to HMDS increasing with exposure time. Silicon was shown to deposit on the catalyst as well as on the blank alumina support. SEM investigation of an individual pellet revealed a radial eggshell silicon distribution. CO chemisorption showed strong decrease of Pt active sites after deactivation, while still maintaining reasonable oxidation levels of ethyl acetate. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
deactivation - platinum - volatile organic compounds - ethyl acetate - organosilicon
in
Topics in Catalysis
volume
45
issue
1-4
pages
121 - 124
publisher
Kluwer
external identifiers
  • Scopus:34548155758
ISSN
1572-9028
DOI
10.1007/s11244-007-0251-6
language
English
LU publication?
yes
id
d5b66ed3-2733-43de-9982-28376bcc6183 (old id 638356)
date added to LUP
2009-02-26 11:44:15
date last changed
2016-11-15 12:58:45
@misc{d5b66ed3-2733-43de-9982-28376bcc6183,
  abstract     = {The deactivation of alumina-supported platinum catalyst for VOC oxidation by long-term exposure for hexamethyldisiloxane (HMDS) has been investigated in a pilot scale reactor for up to 1000 h of exposure. Catalyst samples were characterized by ICP-AES, BET and silicon deposition by SEM. Catalyst activity was investigated using oxidation of ethyl acetate showing deactivation of the catalyst samples as exposed to HMDS increasing with exposure time. Silicon was shown to deposit on the catalyst as well as on the blank alumina support. SEM investigation of an individual pellet revealed a radial eggshell silicon distribution. CO chemisorption showed strong decrease of Pt active sites after deactivation, while still maintaining reasonable oxidation levels of ethyl acetate.},
  author       = {Larsson, AC and Rahmani, M and Arnby, K and Sohrabi, M and Skoglundh, M and Cruise, N and Sanati, Mehri},
  issn         = {1572-9028},
  keyword      = {deactivation - platinum - volatile organic compounds - ethyl acetate - organosilicon},
  language     = {eng},
  number       = {1-4},
  pages        = {121--124},
  publisher    = {ARRAY(0xaef7060)},
  series       = {Topics in Catalysis},
  title        = {Pilot-scale investigation of Pt/alumina catalysts deactivation by organosilicon in the total oxidation of hydrocarbons},
  url          = {http://dx.doi.org/10.1007/s11244-007-0251-6},
  volume       = {45},
  year         = {2007},
}