Environmental In-Situ TEM with Gas Mixtures and Vapours: Protochips Atmosphere 210
The Protochips Atmosphere closed-cell environmental gas in-situ system for TEM has been updated with new features and improvements:
- Mix any combination of gases in just 5 minutes
- Pure, mixed, complex gases and vapours
- Software-controlled flow rate, composition and pressure
- Connect a Residual Gas Analyser
Blue Scientific is the official distributor for Protochips in the UK, Ireland and Nordic region. If you have any questions or if you’d like a quote, please get in touch:
Protochips Atmosphere 210
The Protochips Atmosphere 210 turns any TEM into an environmental TEM, to enhance the in-house capabilities of your lab. You can mix gases, control flow independently and deliver gas at low pressures.
The new model has the same holder assembly and workflow as the previous Atmosphere 200, together with powerful new gas handling capabilities:
- Mix a wide variety of gases,
- Work with vapours – including H2O
- Introduce pressurised gas at realistic flow rates
- Software-controlled flow rate, composition, pressure and more
Gas Mixtures and Vapours
With the new Atmosphere 210 you can mix virtually any composition of up to three gases. Precise quantities of each gas can be added, giving you complete control of your experiment. Gases are combined with an established volumetric mixing technique – the same method used in industrial gas manufacturing. This is extremely reliable and versatile, ensuring a perfectly homogenous blend of any combination of gases.
Gas can be delivered at pressures from 1.0 Torr – 760.0 Torr. The flow rate can also be adjusted from 0.005 mL/min – 1.000 mL/min.
This gives you the flexibility to create virtually any gas mixture required. The three inputs can be:
- Pure gas eg H2, He, O2, N2, Ar
- Multi-component gas eg CO2, CH4, CO, NO2, NH3, CO
- Real-world, complex gas eg exhaust or reaction products
Another new feature is the ability to mix gaseous water, ethanol, and other vapours. This enables you to simulate catalysis environments closer to real-world conditions than ever before.
It takes just 5 minutes for the mixture to reach homogeneity, and you can switch between mixtures in 5 minutes. You can check the composition at any time, and monitor the concentraiton of each constituent gas.
The ability to control pressure and flow gives you unique benefits and possibilities, for example:
- Create dilute mixtures down 1% composition
- Control gas “residence time” with independent flow control
- Deliver gas at pressures as low as 0.3 Torr
Protochips’ Clarity software features the same workflow that existing users will be familiar with, but has been updated to accommodate new manifold and holder hardware. Now you can adjust the gas composition, flow rate and pressure at the click of a button from your PC. This is easier and more convenient, as well as giving you precise, accurate control of the gases in your experiment.
An optional software add-on called Clarity Echo is available for synchronising experiment conditions and in-situ data with the images and videos. This gives you a complete picture of what’s going on in your experiment and your sample’s reaction to environmental conditions. By synchronising data automatically, post-processing time can be reduced by 10x.
Connect a Residual Gas Analyser
Optional accessories are available for connecting a Residual Gas Analyser (RGA) to the gas outlet. This enables you to analyse in-situ chemical processes and measure reaction by-products throughout the experiment – useful in catalysis research.
For example, NiO catalysts for methanation convert CO2 gas to CH4 fuel with complex exothermic reactions. Using the Atmosphere 210, structural and morphological changes in the catalyst can be imaged directly, while tracking the methanation process in real time. Further details are available in an application note:
With these observations, you can correlate sample changes with reaction conditions and gain a more complete, quantitative understanding of the dynamics of reactions.
To reduce thermal drift, the holder construction has been improved. Thermal drift is now reduced by five times. New, chemically inert silica-based gas lines also enhance the accuracy and repeatability or your results.