A flexible cell for in situ combined XAS–DRIFTS–MS experiments

• Published in: Journal of synchrotron radiation 2019-05, Vol.26 (3), p.801-810
• Main Authors: Meira, Debora M., Monte, Manuel, Fernández-García, Marcos, Meunier, Frederic, Mathon, Olivier, Pascarelli, Sakura, Agostini, Giovanni
• Format: Article
• Language: English
• Subjects: Absorption; Catalysis; Chemical Sciences; coupled experiments; Environment and Society; Environmental Sciences; Fluorescence; fluorescence mode; Fourier transforms; in situ characterization; multi‐technique characterization; Reflectance; Sample holders; XAS–DRIFTS–MS
• ISSN: 1600-5775; 0909-0495; 1600-5775
• DOI: 10.1107/S1600577519003035

A new cell for in situ combined X‐ray absorption, diffuse reflectance IR Fourier transform and mass spectroscopies (XAS–DRIFTS–MS) is presented. The cell stands out among others for its achievements and flexibility. It is possible to perform XAS measurements in transmission or fluorescence modes, and the cell is compatible with external devices like UV‐light and Raman probes. It includes different sample holders compatible with the different XAS detection modes, different sample forms (free powder or self‐supporting pellet) and different sample loading/total absorption. Additionally, it has a small dead volume and can operate over a wide range of temperature (up to 600°C) and pressure (up to 5 bar). Three research examples will be shown to illustrate the versatility of the cell. This cell covers a wider range of applications than any other cell currently known for this type of study. A new cell is demonstrated that has been designed and tested to perform in situ X‐ray absorption, diffuse reflectance IR Fourier transform and mass spectroscopies. It is possible to perform X‐ray absorption spectroscopy measurements in transmission or fluorescence modes. The best configuration can be adjusted depending on the specific requirements of the experiment, and the cell is compatible with external devices like UV‐light and Raman probes.