scholarly journals Anin situset up for the detection of CO2from catalytic CO oxidation by using planar laser-induced fluorescence

2012 ◽  
Vol 83 (5) ◽  
pp. 053104 ◽  
Author(s):  
J. Zetterberg ◽  
S. Blomberg ◽  
J. Gustafson ◽  
Z. W. Sun ◽  
Z. S. Li ◽  
...  
Keyword(s):  
Co Oxidation ◽  
Laser Induced Fluorescence ◽  
Catalytic Co Oxidation ◽  
Planar Laser Induced Fluorescence ◽  
Planar Laser

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

Catalysts ◽  
2019 ◽  
Vol 9 (5) ◽  
pp. 484 ◽  
Author(s):  
Jianfeng Zhou ◽  
Sebastian Matera ◽  
Sebastian Pfaff ◽  
Sara Blomberg ◽  
Edvin Lundgren ◽  
...  
Keyword(s):  
Single Crystal ◽  
Co Oxidation ◽  
Flow Reactor ◽  
Laser Induced Fluorescence ◽  
Model Catalysts ◽  
Stagnation Flow ◽  
Reaction Conditions ◽  
Planar Laser Induced Fluorescence ◽  
Planar Laser ◽  
Crystal Model

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.

scholarly journals Real-Time Gas-Phase Imaging over a Pd(110) Catalyst during CO Oxidation by Means of Planar Laser-Induced Fluorescence

ACS Catalysis ◽  
2015 ◽  
Vol 5 (4) ◽  
pp. 2028-2034 ◽  
Author(s):  
Sara Blomberg ◽  
Christian Brackmann ◽  
Johan Gustafson ◽  
Marcus Aldén ◽  
Edvin Lundgren ◽  
...  
Keyword(s):  
Co Oxidation ◽  
Real Time ◽  
Gas Phase ◽  
Laser Induced Fluorescence ◽  
Phase Imaging ◽  
Planar Laser Induced Fluorescence ◽  
Planar Laser

Quantification of mixing of oxygen and iodine in Chemical Oxygen Iodine Lasers using planar laser induced fluorescence

2000 ◽  
Author(s):  
T. Muruganandam ◽  
Srihari Lakshmi ◽  
A. Ramesh ◽  
S. Viswamurthy ◽  
R. Sujith ◽  
...  
Keyword(s):  
Laser Induced Fluorescence ◽  
Planar Laser Induced Fluorescence ◽  
Planar Laser

scholarly journals The 3D Modeling System for Bioaerosol Distribution Based on Planar Laser-Induced Fluorescence

Sensors ◽  
2021 ◽  
Vol 21 (8) ◽  
pp. 2607
Author(s):  
Siying Chen ◽  
Yuanyuan Chen ◽  
Yinchao Zhang ◽  
Pan Guo ◽  
He Chen ◽  
...  
Keyword(s):  
3D Reconstruction ◽  
3D Modeling ◽  
Aerosol Particles ◽  
Laser Induced Fluorescence ◽  
Frame Rate ◽  
Oxide Semiconductor ◽  
Laser Source ◽  
Confined Space ◽  
Planar Laser Induced Fluorescence ◽  
Planar Laser

Although it is quite challenging to image and analyze the spatial distribution of bioaerosols in a confined space, a three-dimensional (3D) modeling system based on the planar laser-induced fluorescence (PLIF) technique is proposed in this paper, which is designed to analyze the temporal and spatial variations of bioaerosol particles in a confined chamber. The system employs a continuous planar laser source to excite the fluoresce, and a scientific complementary metal oxide semiconductor (sCMOS) camera to capture images of 2048 × 2048 pixels at a frame rate of 12 Hz. While a sliding platform is moving back and forth on the track, a set of images are captured at different positions for 3D reconstruction. In this system, the 3D reconstruction is limited to a maximum measurement volume of about 50 cm × 29.7 cm × 42 cm, with a spatial resolution of about 0.58 mm × 0.82 mm × 8.33 mm, and a temporal resolution of 5 s. Experiments were carried out to detect the PLIF signals from fluorescein aerosols in the chamber, and then 3D reconstruction was used to visualize and analyze the diffusion of aerosol particles. The results prove that the system can be applied to clearly reconstruct the 3D distribution and record the diffusion process of aerosol particles in a confined space.

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