Overview
In Commissioning: In-situ, Multi-modal, Catalysis-centric X-ray Spectroscopy End-Station
Beam line currently closed for upgrade.
Beam line 10-2 is a wiggler-based source that splits time between the front hutch (BL10-2a), instrumented for wide-angle X-ray scattering, and the rear hutch (BL10-2b), instrumented for X-ray spectroscopy with a focus on in-situ, time-resolved catalyst characterization.
The BL10-2b hutch is equipped with integrated systems for conducting in-situ/operando thermal-heterogeneous catalysis and electro-catalysis experiments with product analytics for time-resolved studies. An infrared spectrometer installed in the hutch allows for scheduling blocks focused on combined XAS/FTIR measurements probing the metal center as well as adsorbates and ligands. Spectra can be collected at rates up to 50 ms/XAS spectra using the quick-scanning mode of the monochromator.
Sample Environment —
| Room-temperature ex-situ sample stages |
|---|
| Capillary-cell (RT-700°C, 1-21 bara) |
| Two-chamber, flow-through electrochemical cell |
Instrumentation —
| Detectors | Parallel plate ionization chambers PIPS diode 24-element Ge solid-state detector (Coming Winter 2023-Spring 2024) Bruker Vertex 70V |
|---|---|
| Rear hutch | Dual Sample Stages [statement about beam position on stage TBD] |
| Process Control and Analytics | Compressed gas hookups for ambient or high-pressure flow systems Two 6-gas flow systems with valving for modulation and vapor dosing experiments Portable 4-gas high pressure flow system [Pump details here] Biologic SP250 [check me] potentiostat Hiden Mass Spectrometer [GC specs here] |
| Other | Filter wheels for harmonic selection Automated reference changer |
Specifications
Technical Specifications
Energy —
| Si(111) | 4.7-22 keV | ||||
|---|---|---|---|---|---|
| Si(333) | 14.1-30 keV |
Optics —
| M0 Mirror | Monochromator | M2 Mirror |
|---|---|---|
| Rh-coated cylinder mirror for harmonic rejection and vertical collimation. Cutoff-energies at 12.65, 17.4, 23.0 keV. Mirror removable for higher energy access. | Si(111) liquid nitrogen cooled double crystal, non-fixed exit with quick scanning capabilities. Step-scanning, continuous scanning and quick-scanning (50 ms EXAFS) capable. | Rh-coated toroid mirror for vertical and horizontal focus. Spot size approximately 200 um vertical x 500 um horizontal. |
Absorption —
| 508 μm Be, 4.4 m He, 205 μm fixed, 1016 μm graphite (insertable, user controlled) |
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