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Combining Planar Laser-Induced Fluorescence with Stagnation Point Flows for Small Single-Crystal Model Catalysts: CO Oxidation on a Pd(100)

Zhou, Jianfeng LU ; Matera, Sebastian ; Pfaff, Sebastian LU ; Blomberg, Sara LU ; Lundgren, Edvin LU and Zetterberg, Johan LU orcid (2019) In Catalysts 9(5).
Abstract
A stagnation flow reactor has been designed and characterized for both experimental and modeling studies of single-crystal model catalysts in heterogeneous catalysis. Using CO oxidation over a Pd(100) single crystal as a showcase, we have employed planar laser-induced fluorescence (PLIF) to visualize the CO2 distribution over the catalyst under reaction conditions and subsequently used the 2D spatially resolved gas phase data to characterize the stagnation flow reactor. From a comparison of the experimental data and the stagnation flow model, it was found that characteristic stagnation flow can be achieved with the reactor. Furthermore, the combined stagnation flow/PLIF/modeling approach makes it possible to estimate the... (More)
A stagnation flow reactor has been designed and characterized for both experimental and modeling studies of single-crystal model catalysts in heterogeneous catalysis. Using CO oxidation over a Pd(100) single crystal as a showcase, we have employed planar laser-induced fluorescence (PLIF) to visualize the CO2 distribution over the catalyst under reaction conditions and subsequently used the 2D spatially resolved gas phase data to characterize the stagnation flow reactor. From a comparison of the experimental data and the stagnation flow model, it was found that characteristic stagnation flow can be achieved with the reactor. Furthermore, the combined stagnation flow/PLIF/modeling approach makes it possible to estimate the turnover frequency (TOF) of the catalytic surface from the measured CO2 concentration profiles above the surface and to predict the CO2, CO and O2 concentrations at the surface under reaction conditions. (Less)
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author
; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Catalysts
volume
9
issue
5
article number
484
publisher
MDPI AG
external identifiers
  • scopus:85069449875
ISSN
2073-4344
DOI
10.3390/catal9050484
project
Combined techniques for studies of catalysis
language
English
LU publication?
yes
id
4ebd7213-3c8e-4120-a7ec-8c2584b3f42d
date added to LUP
2019-05-27 16:27:15
date last changed
2023-12-17 20:40:52
@article{4ebd7213-3c8e-4120-a7ec-8c2584b3f42d,
  abstract     = {{A stagnation flow reactor has been designed and characterized for both experimental and modeling studies of single-crystal model catalysts in heterogeneous catalysis. Using CO oxidation over a Pd(100) single crystal as a showcase, we have employed planar laser-induced fluorescence (PLIF) to visualize the CO<sub>2</sub> distribution over the catalyst under reaction conditions and subsequently used the 2D spatially resolved gas phase data to characterize the stagnation flow reactor. From a comparison of the experimental data and the stagnation flow model, it was found that characteristic stagnation flow can be achieved with the reactor. Furthermore, the combined stagnation flow/PLIF/modeling approach makes it possible to estimate the turnover frequency (TOF) of the catalytic surface from the measured CO<sub>2</sub> concentration profiles above the surface and to predict the CO<sub>2</sub>, CO and O2 concentrations at the surface under reaction conditions.}},
  author       = {{Zhou, Jianfeng and Matera, Sebastian and Pfaff, Sebastian and Blomberg, Sara and Lundgren, Edvin and Zetterberg, Johan}},
  issn         = {{2073-4344}},
  language     = {{eng}},
  number       = {{5}},
  publisher    = {{MDPI AG}},
  series       = {{Catalysts}},
  title        = {{Combining Planar Laser-Induced Fluorescence with Stagnation Point Flows for Small Single-Crystal Model Catalysts: CO Oxidation on a Pd(100)}},
  url          = {{http://dx.doi.org/10.3390/catal9050484}},
  doi          = {{10.3390/catal9050484}},
  volume       = {{9}},
  year         = {{2019}},
}