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A von Hamos spectrometer for in situ sulfur speciation by non-resonant sulfur Kα emission spectroscopy
- Source :
- Journal of Analytical Atomic Spectrometry. 34:2105-2111
- Publication Year :
- 2019
- Publisher :
- Royal Society of Chemistry (RSC), 2019.
-
Abstract
- A von Hamos geometry based wavelength dispersive spectrometer combined with an in situ reactor cell has been developed to measure non-resonant sulfur Kα emission for the in situ speciation of low concentrations of sulfur. The spectrometer operates at 15 cm focusing radius, is equipped with a curved Si(111) crystal and a position sensitive detector, and is capable of achieving an energy resolution of 0.56 eV at 2.3 keV. We present the details of the spectrometer and dedicated sample-cell design to study chemical reactions in situ. The spectrometer capabilities are exemplified by an in situ study of sulfur speciation during H2S poisoning of SiO2 supported Ru nanoparticles performing CO methanation.
- Subjects :
- In situ
Materials science
Spectrometer
010401 analytical chemistry
Resolution (electron density)
Analytical chemistry
chemistry.chemical_element
010501 environmental sciences
01 natural sciences
Sulfur
Chemical reaction
0104 chemical sciences
Analytical Chemistry
Crystal
chemistry
Methanation
Emission spectrum
Spectroscopy
0105 earth and related environmental sciences
Subjects
Details
- ISSN :
- 13645544 and 02679477
- Volume :
- 34
- Database :
- OpenAIRE
- Journal :
- Journal of Analytical Atomic Spectrometry
- Accession number :
- edsair.doi...........8bcb225bbf7ce3c457d72b72bef3acb4