Calibration of Quenching for laser-induced fluorescence of CO₂ at 2.7 μm
(2019) FYSK02 20191Department of Physics
Combustion Physics
- Abstract
- Knowledge about the gas-phase close to an active catalyst is essential in order to understand the properties of the catalytic reaction process. By the use of planar laser-induced fluorescence (PLIF), the gas-phase can be visualized with high spatial and temporal resolution without affecting the catalyst. In this work, catalytic CO oxidation over a Pd(100) catalyst is investigated using laser-induced fluorescence of CO₂. However, as the CO oxidation requires a gas mixture of CO, CO₂ and O₂, the problem of fluorescence quenching arises. This is caused by the CO₂ colliding with other molecules, where some energy transfers into kinetic energy. Therefore, a deeper study of the quenching factor is performed, it shows intensity drops of 50 % as a... (More)
- Knowledge about the gas-phase close to an active catalyst is essential in order to understand the properties of the catalytic reaction process. By the use of planar laser-induced fluorescence (PLIF), the gas-phase can be visualized with high spatial and temporal resolution without affecting the catalyst. In this work, catalytic CO oxidation over a Pd(100) catalyst is investigated using laser-induced fluorescence of CO₂. However, as the CO oxidation requires a gas mixture of CO, CO₂ and O₂, the problem of fluorescence quenching arises. This is caused by the CO₂ colliding with other molecules, where some energy transfers into kinetic energy. Therefore, a deeper study of the quenching factor is performed, it shows intensity drops of 50 % as a result of quenching. Ultimately the quenching factors are applied to the Pd(100) measurement showing the gas-phase around the catalyst in greater detail. (Less)
Please use this url to cite or link to this publication:
http://lup.lub.lu.se/student-papers/record/8986392
- author
- Stjärneblad, Philip LU
- supervisor
- organization
- course
- FYSK02 20191
- year
- 2019
- type
- M2 - Bachelor Degree
- subject
- keywords
- Laser-induced fluorescence, CO oxidation, Catalysis, Fluorescence quenching, Calibration
- language
- English
- id
- 8986392
- date added to LUP
- 2019-06-20 15:07:26
- date last changed
- 2019-06-20 15:07:26
@misc{8986392, abstract = {{Knowledge about the gas-phase close to an active catalyst is essential in order to understand the properties of the catalytic reaction process. By the use of planar laser-induced fluorescence (PLIF), the gas-phase can be visualized with high spatial and temporal resolution without affecting the catalyst. In this work, catalytic CO oxidation over a Pd(100) catalyst is investigated using laser-induced fluorescence of CO₂. However, as the CO oxidation requires a gas mixture of CO, CO₂ and O₂, the problem of fluorescence quenching arises. This is caused by the CO₂ colliding with other molecules, where some energy transfers into kinetic energy. Therefore, a deeper study of the quenching factor is performed, it shows intensity drops of 50 % as a result of quenching. Ultimately the quenching factors are applied to the Pd(100) measurement showing the gas-phase around the catalyst in greater detail.}}, author = {{Stjärneblad, Philip}}, language = {{eng}}, note = {{Student Paper}}, title = {{Calibration of Quenching for laser-induced fluorescence of CO₂ at 2.7 μm}}, year = {{2019}}, }