In situ structure-activity correlation experiments of the ruthenium catalyzed CO oxidation reaction
(2009) Workshop of the European-Synchrotron-Radiation-Facility, 2009 145(3-4). p.236-242- Abstract
- The complex structure-activity correlation of the CO oxidation on ruthenium has been studied in a batch reactor by using in situ surface X-ray diffraction (SXRD) and on-line mass spectrometry. Two distinct active phases are identified at higher pressures in the mbar range depending on the reaction conditions: a non-oxidic phase and a RuO2(1 1 0) layer of variable thickness ranging from 1.5 nm to 10 nm. For reaction temperatures lower than 520 K the experimental turnover frequency (TOF) numbers are shown to be almost identical for the two types of active phases. Above 520 K the RuO2(1 1 0) layer turned out to be much more active than the non-oxidic phase. Kinetic reaction experiments on the RuO2(1 1 0) phase reveal an activation energy of... (More)
- The complex structure-activity correlation of the CO oxidation on ruthenium has been studied in a batch reactor by using in situ surface X-ray diffraction (SXRD) and on-line mass spectrometry. Two distinct active phases are identified at higher pressures in the mbar range depending on the reaction conditions: a non-oxidic phase and a RuO2(1 1 0) layer of variable thickness ranging from 1.5 nm to 10 nm. For reaction temperatures lower than 520 K the experimental turnover frequency (TOF) numbers are shown to be almost identical for the two types of active phases. Above 520 K the RuO2(1 1 0) layer turned out to be much more active than the non-oxidic phase. Kinetic reaction experiments on the RuO2(1 1 0) phase reveal an activation energy of 78 +/- 10 kJ/mol which is in perfect agreement with corresponding reactivity experiments on supported and powder RuO2 catalyst. Under oxidizing reaction conditions and high concentration of CO2 in the gas mixture, the RuO2(1 1 0) model catalyst shows reversible product-poisoning. (C) 2008 Elsevier B.V. All rights reserved. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/1477381
- author
- Over, H. ; Balmes, O. and Lundgren, Edvin LU
- organization
- publishing date
- 2009
- type
- Chapter in Book/Report/Conference proceeding
- publication status
- published
- subject
- keywords
- Structure-activity correlation, Kinetic data, Ru-oxide, CO oxidation
- host publication
- Catalysis Today
- volume
- 145
- issue
- 3-4
- pages
- 236 - 242
- publisher
- Elsevier
- conference name
- Workshop of the European-Synchrotron-Radiation-Facility, 2009
- conference location
- Grenoble, France
- conference dates
- 2009-02-02 - 2009-02-05
- external identifiers
-
- wos:000269006900008
- scopus:67651036429
- ISSN
- 0920-5861
- DOI
- 10.1016/j.cattod.2008.10.048
- language
- English
- LU publication?
- yes
- id
- 903f6941-f22b-46b8-bf98-09b12c71804f (old id 1477381)
- date added to LUP
- 2016-04-01 14:24:22
- date last changed
- 2022-03-29 20:46:17
@inproceedings{903f6941-f22b-46b8-bf98-09b12c71804f,
abstract = {{The complex structure-activity correlation of the CO oxidation on ruthenium has been studied in a batch reactor by using in situ surface X-ray diffraction (SXRD) and on-line mass spectrometry. Two distinct active phases are identified at higher pressures in the mbar range depending on the reaction conditions: a non-oxidic phase and a RuO2(1 1 0) layer of variable thickness ranging from 1.5 nm to 10 nm. For reaction temperatures lower than 520 K the experimental turnover frequency (TOF) numbers are shown to be almost identical for the two types of active phases. Above 520 K the RuO2(1 1 0) layer turned out to be much more active than the non-oxidic phase. Kinetic reaction experiments on the RuO2(1 1 0) phase reveal an activation energy of 78 +/- 10 kJ/mol which is in perfect agreement with corresponding reactivity experiments on supported and powder RuO2 catalyst. Under oxidizing reaction conditions and high concentration of CO2 in the gas mixture, the RuO2(1 1 0) model catalyst shows reversible product-poisoning. (C) 2008 Elsevier B.V. All rights reserved.}},
author = {{Over, H. and Balmes, O. and Lundgren, Edvin}},
booktitle = {{Catalysis Today}},
issn = {{0920-5861}},
keywords = {{Structure-activity correlation; Kinetic data; Ru-oxide; CO oxidation}},
language = {{eng}},
number = {{3-4}},
pages = {{236--242}},
publisher = {{Elsevier}},
title = {{In situ structure-activity correlation experiments of the ruthenium catalyzed CO oxidation reaction}},
url = {{http://dx.doi.org/10.1016/j.cattod.2008.10.048}},
doi = {{10.1016/j.cattod.2008.10.048}},
volume = {{145}},
year = {{2009}},
}