A von Hamos spectrometer for in situ sulfur speciation by non-resonant sulfur Kα emission spectroscopy

被引：10

作者：

Kuzmenko, Dzulija ^{[1
,2
]}

Vogelsang, Urs ^{[1
]}

Hitz, Stephan ^{[1
]}

Mueller, David ^{[1
]}

Clark, Adam H. ^{[1
]}

Kinschel, Dominik ^{[1
,3
]}

Czapla-Masztafiak, Joanna ^{[4
]}

Milne, Christopher ^{[1
]}

Szlachetko, Jakub ^{[4
]}

Nachtegaal, Maarten ^{[1
]}

机构：

[1] Paul Scherrer Inst, CH-5232 Villigen, Switzerland

[2] Swiss Fed Inst Technol, Dept Chem & Appl Biosci, Vladimir Prelog Weg 1-5, CH-8093 Zurich, Switzerland

[3] Ecole Polytech Fed Lausanne, CH-1015 Lausanne, Switzerland

[4] Polish Acad Sci, Inst Nucl Phys, PL-31342 Krakow, Poland

来源：

JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY | 2019年 / 34卷 / 10期

基金：

瑞士国家科学基金会;

关键词：

CATALYSTS; SPECTRA; GAS;

D O I：

10.1039/c9ja00195f

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A von Hamos geometry based wavelength dispersive spectrometer combined with an in situ reactor cell has been developed to measure non-resonant sulfur K alpha 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.

引用

页码：2105 / 2111

页数：7

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