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Single Acetone Droplets at Supercritical Pressure: Droplet Generation and Characterization of PLIFP
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F. Weckenmann
Published/Copyright:
December 14, 2011
Abstract
An experimental investigation of isolated acetone droplets under supercritical pressure is presented. An optically accessible pressure chamber was set up for pressures ranging up to 60 bar and temperatures of up to 530 K. A novel method for the generation of acetone droplets on demand in the vicinity of the critical point is presented. High speed shadowgraphy imaging revealed remarkable reproducibility of the droplet generation regarding their size and shape and the timing of the detachment.
The photo-physical properties of acetone in nitrogen as well as nitrogen-oxygen mixtures were investigated using planar laser induced fluorescence and phosphorescence (PLIFP). The measurements revealed a strong sensitivity and selectivity of the phosphorescence-fluorescence-ratio relative to the oxygen concentration. This demonstrates the potential of PLIFP to distinguish between the liquid and gaseous phase of acetone injected into mixtures of nitrogen and oxygen.
Keywords: Supercritical pressure; Acetone droplets; Droplet generation; Acetone fluorescence and phosphorescence; Critical point
Published Online: 2011-12-14
Published in Print: 2011-12-1
© by Oldenbourg Wissenschaftsverlag, Stuttgart, Germany
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Keywords for this article
Supercritical pressure;
Acetone droplets;
Droplet generation;
Acetone fluorescence and phosphorescence;
Critical point
Articles in the same Issue
- From flames to functional materials — The multiple facets of diagnostic techniques in Physical Chemistry
- High-Temperature Measurements of the Rate Constants for Reactions of OH with a Series of Large Normal Alkanes: n-Pentane, n-Heptane, and n-Nonane
- Experimental and Numerical Investigations of Ferrocene-Doped Propene Flames
- Non-Equilibrium Kinetic Studies of Plasma-Assisted Combustion using Laser-Based Diagnostics
- Coke Formation in Steam Reforming of Natural Gas over Rhodium/Alumina Catalysts: An Atomic Force Microscopy Study using the Oscillating Friction Mode
- Gas-Temperature Imaging in a Microwave-Plasma Nanoparticle-Synthesis Reactor Using Multi-Line NO-LIF Thermometry
- Identification of Tetrahydrofuran Reaction Pathways in Premixed Flames
- Competing Channels in the Propene + OH Reaction: Experiment and Validated Modeling over a Broad Temperature and Pressure Range
- The Effect of Carbon–Carbon Double Bonds on the Combustion Chemistry of Small Fatty Acid Esters
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