Visualizing the Gas Diffusion Induced Ignition of a Catalytic Reaction
(2022) In ACS Catalysis p.6589-6595- Abstract
- Many surface science experiments within heterogeneous catalysis are now conducted in realistic conditions at higher pressures. At these pressures, localized gas conditions will form throughout the reactor. Understanding these gas conditions and their interaction with the catalyst surface at relevant time scales and with spatial resolution is important. To address this issue, we use a combination of techniques that can resolve the gas and surface composition with enough temporal and spatial resolution to show even very rapid gas–surface interactions. Planar laser-induced fluorescence is used to monitor the gas phase, thermography visualizes the surface temperature, and 2D-surface optical reflectance measurements show oxide growth. By... (More)
- Many surface science experiments within heterogeneous catalysis are now conducted in realistic conditions at higher pressures. At these pressures, localized gas conditions will form throughout the reactor. Understanding these gas conditions and their interaction with the catalyst surface at relevant time scales and with spatial resolution is important. To address this issue, we use a combination of techniques that can resolve the gas and surface composition with enough temporal and spatial resolution to show even very rapid gas–surface interactions. Planar laser-induced fluorescence is used to monitor the gas phase, thermography visualizes the surface temperature, and 2D-surface optical reflectance measurements show oxide growth. By combining these techniques in an operando experiment, we demonstrate that the spatial evolution of the catalytic ignition of CO oxidation over Pd(100) at higher pressures is driven by localized gas conditions, emphasizing the need for 2D gas-phase measurements when studying model catalysts in high-pressure conditions. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/5bf8bcb6-f741-491d-bcb2-8c9bd56b1871
- author
- Pfaff, Sebastian LU ; Rämisch, Lisa LU ; Gericke, Sabrina Maria LU ; Larsson, Alfred LU ; Lundgren, Edvin LU and Zetterberg, Johan LU
- organization
- publishing date
- 2022-05-19
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- heterogeneous catalysis, operando, thermography, Pd(100), catalytic ignition, planar laser-induced fluorescence
- in
- ACS Catalysis
- issue
- 12
- pages
- 7 pages
- publisher
- The American Chemical Society (ACS)
- external identifiers
-
- scopus:85133127876
- ISSN
- 2155-5435
- DOI
- 10.1021/acscatal.2c01666
- project
- Combined techniques for studies of catalysis
- language
- English
- LU publication?
- yes
- id
- 5bf8bcb6-f741-491d-bcb2-8c9bd56b1871
- date added to LUP
- 2022-08-24 16:29:36
- date last changed
- 2023-11-18 02:55:48
@article{5bf8bcb6-f741-491d-bcb2-8c9bd56b1871, abstract = {{Many surface science experiments within heterogeneous catalysis are now conducted in realistic conditions at higher pressures. At these pressures, localized gas conditions will form throughout the reactor. Understanding these gas conditions and their interaction with the catalyst surface at relevant time scales and with spatial resolution is important. To address this issue, we use a combination of techniques that can resolve the gas and surface composition with enough temporal and spatial resolution to show even very rapid gas–surface interactions. Planar laser-induced fluorescence is used to monitor the gas phase, thermography visualizes the surface temperature, and 2D-surface optical reflectance measurements show oxide growth. By combining these techniques in an operando experiment, we demonstrate that the spatial evolution of the catalytic ignition of CO oxidation over Pd(100) at higher pressures is driven by localized gas conditions, emphasizing the need for 2D gas-phase measurements when studying model catalysts in high-pressure conditions.}}, author = {{Pfaff, Sebastian and Rämisch, Lisa and Gericke, Sabrina Maria and Larsson, Alfred and Lundgren, Edvin and Zetterberg, Johan}}, issn = {{2155-5435}}, keywords = {{heterogeneous catalysis; operando, thermography; Pd(100); catalytic ignition; planar laser-induced fluorescence}}, language = {{eng}}, month = {{05}}, number = {{12}}, pages = {{6589--6595}}, publisher = {{The American Chemical Society (ACS)}}, series = {{ACS Catalysis}}, title = {{Visualizing the Gas Diffusion Induced Ignition of a Catalytic Reaction}}, url = {{http://dx.doi.org/10.1021/acscatal.2c01666}}, doi = {{10.1021/acscatal.2c01666}}, year = {{2022}}, }