Cat-STM
In-Operando STM for catalysis
Catalytic Scanning Tunneling Microscopy for solid-gas interface studies in-operando under high pressure and high temperatures.
Leiden Probe Microscopy offers STM to study catalysis at the gas/solid interface for in-operando research. LPM makes STM easy and fast for chemistry.
01 Pressure and temperature control
The Cat-STM introduces another dimension to the fields of surface science and physical chemistry: operando scanning probe experiments under conditions running from UHV up to 6 bar of reactive gas atmosphere and at elevated temperature. Observe the process in action, under industrial conditions.
02 Correlated surface morphology
With the Cat-STM system one can simultaneously monitor the surface morphology and the reaction products as function of feed gas composition. The Cat-STM can operate in both batch and flow reactor mode.
03 Fast gas variation
The unique design of the reactor with a volume of < 5mL allows fast pressure and gas mixture variations as well as detection of small amounts of reaction products with our dedicated LPM in-line gas analyzer.
04 Simple UHV system integration
The Cat-STM unit is fully UHV compatible and can be integrated in new or existing UHV systems. It can be combined with all common UHV sample preparation and analysis tools.
05 In-situ sample transfer
This allows preparation of well-defined samples, in-situ, prior to the high pressure experiments, as well as studying the sample after exposure to high pressures in an UHV environment without exposing the sample to air.
Leiden Probe Microscopy offers STM in a reactor cell for in-operando research of the gas-solid interface at elivated temperatures and high pressures. LPM makes STM easy and fast for chemistry.
| Reactor STM | ||
| STM scan range (X,Y) | 2,5 µm | |
| STM scan range (Z) | 1 µm | |
| Max scan speed | Video rate | |
| STM resolution | Atomic resolution on Au(111) | |
| Coarse travel range (X,Y) | 20 mm x 20 mm | |
| Samples | Single Crystals, Thin Films | |
| Gas exchange rate | <10 s | |
| Reactor volume | <5 ml | |
| Vibration Isolation | Spring suspension and eddy current damping. | |
| Sample holder | Industry-standard Flag Style Sample Holder | |
| Sample transfer | Transfer rod | |
| Integration | Stand-alone or on DN200CF flange | |
| Full system footprint; height | 850 mm x 950 mm x 1000 mm | |
| Electronics | ||
| SPM controller | Specs Nanonis Mimea BP5e control system | |
| High voltage driver | LPM HV Driver | |
| IV converter | Femto DLPCA-200 preamp | |
| Fast scan module | Elettra FAST 2.0 Module | |
| Protective Environment | ||
| Gas environment | Ar, CO, CO2, H2 | |
| Reactor pressure | UHV - 6 bar | |
| Gas analysis | LPM T100 Gas Analyser | |
| Reactor temperature | RT to 600°C | |
Do you want to know more? Download our brochure!
We are always highly interested in learning more about the work of our customers. Don't hesitate to reach out!
We encourage you to get in touch with us without any hesitation! We are eager to learn more about your work and explore how we can assist you in achieving your goals.
Typical applications
What our technology can do for you
Selection of user results:
Nature Communications 2019, 10 (2546); R.V. Mom, J.N. Louwen, J.W.M. Frenken et al.: In situ observations of an active MoS2 model hydrodesulfurization catalyst
J. Phys. Chem. C 2018, 122, (26430); J. Zheng, O. Ivashenko, A. O. Sjåstad et al.: Roadmap for Modeling RhPt/Pt(111) Catalytic Surfaces
Nature Communications 2017, 8 (429); M.A. van Spronsen, J.W.M. Frenken & I.M.N. Groot: Observing the oxidation of platinum, Nature Communications
Application fields
- CO oxidation
- Fischer-Tropsch synthesis
- NOx reduction
- High pressure CVD growth
- Ethylene epoxydation
- Ammonia/Methanol synthesis
Get in contact with us
In case you are looking for more in-depth discussions about our technology and whether it could help your experimental work, feel free to reach out. Jessika would be happy to have a chat.
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