Spatially and temporally resolved gas distributions around heterogeneous catalysts using infrared planar laser-induced fluorescence

Citations Over TimeTop 10% of 2015 papers

Abstract

Visualizing and measuring the gas distribution in close proximity to a working catalyst is crucial for understanding how the catalytic activity depends on the structure of the catalyst. However, existing methods are not able to fully determine the gas distribution during a catalytic process. Here we report on how the distribution of a gas during a catalytic reaction can be imaged in situ with high spatial (400 μm) and temporal (15 μs) resolution using infrared planar laser-induced fluorescence. The technique is demonstrated by monitoring, in real-time, the distribution of carbon dioxide during catalytic oxidation of carbon monoxide above powder catalysts. Furthermore, we demonstrate the versatility and potential of the technique in catalysis research by providing a proof-of-principle demonstration of how the activity of several catalysts can be measured simultaneously, either in the same reactor chamber, or in parallel, in different reactor tubes.

Related Papers

• → Digital imaging of reaction zones in hydrocarbon–air flames using planar laser-induced fluorescence of CH and C_2(1986)81 cited
• Planar laser induced fluorescence imaging of OH distribution in flames(2000)
• → Flow visualization of transverse jet in supersonic flow using planar laser-induced fluorescence technique(2013)
• → Measurement of Underexpanded Freejets by the Acetone Laser-Induced Fluorescence Method(2003)
• Planar laser induced fluorescence imaging of OH radical in supersonic combustor(2004)