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Oxygen carrier particles (OCPs) serve as fuel oxidant in emerging chemical looping combustion systems. However, chemical looping combustion process optimization is hindered by the lack of online sensors for measurements of OCP oxidation states at temperatures up to 1,000 °C and pressures up to 10 atm. We are investigating Raman spectroscopy as a potential solution, as this technique is known for its...
An optimized time‐resolved Raman spectroscopy system based on gated detection and a nanosecond pulsed laser excitation is described here. The system allows characterizing materials at high temperature by discriminating between Raman scattering and thermal emission. The optimized parameters were used to record in situ Raman data of polycrystalline c‐Y2O3 at high temperatures up to 2100 °C. In addition...
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