Gravimetric sorption analysis
Measuring devices for gravimetric sorption analysis from UHV up to 1000bar
Dive into the realm of gravimetric sorption analysis (GSA) with Linseis, where scientific precision and innovation harmonize. Our expansive array of measuring devices embarks on a journey that unveils the mysteries of gas sorption.
In the heart of this sophisticated ensemble are integrated solutions that grant you the power to steer pressure, temperature, and gas dosage with finesse, all at your fingertips, thanks to the intuitive software that accompanies these instruments.
Within our GSA portfolio, two distinct load cells await your command. The first, a mechanical microbalance, stands as the embodiment of precision, ensuring that weight measurements are executed with the utmost accuracy. The second, the magnetic levitation balance, emerges as an emblem of groundbreaking technology. With its hermetically sealed measuring cell, it fearlessly navigates the intricate labyrinth of highly reactive gases.
This expansive selection of devices opens the door to a treasure trove of possibilities, spanning a temperature spectrum that stretches from a chilling -196 °C to an awe-inspiring 2400 °C. The pressure range mirrors this diversity, spanning from the ethereal landscapes of ultra-high vacuum to the robust 350 bar.
To elevate the analytical journey, we introduce the optional TG-DSC (Thermogravimetry – Differential Scanning Calorimetry) measuring head. This ingenious addition allows you to venture into the realm of simultaneous weight changes and caloric reactions, all seamlessly woven into a single measurement run.
To elevate the analytical journey, we introduce the optional TG-DSC (Thermogravimetry – Differential Scanning Calorimetry) measuring head. This ingenious addition allows you to venture into the realm of simultaneous weight changes and caloric reactions, all seamlessly woven into a single measurement run.
Linseis, a stalwart in the world of analytical instrumentation, beckons you to explore the intricate landscapes of gas sorption like never before. Whether you are unraveling the secrets of material behavior or probing the mysteries of chemical reactions, our measuring devices offer the keys to unlock these enigmatic realms with precision and finesse.
Linseis offers the widest range of sorption analyzers for numerous applications such as:
- Chemisorption/physisorption (UHV up to 1000 bar)
- Adsorption isotherms (BET surface analysis)
- TPD, TPO, TPR measurements (-196 to 1800°C)
- Enthalpies of sorption (simultaneous TG/DSC sensor)
- In-situ gas analysis (FTIR, Raman, ELIF)
- Corrosive Atmospheres Magnetic Levitation Balance
LINSEIS DSC overview
GSA PT 10
- Gravimetric Sorption Analyzer (GSA)
- Market leading precision, accuracy and repeatability
- From vacuum up to 10 bar
- -150 up to 500/700/1000°C and RT up to 1400/1600°C
GSA PT 100
- High temperature and high pressure Gravimetric Sorption Analyzer (GSA)
- Unique Magnetic Levitation Balance, seperating balance and reactor
- Selection of different gas and vapor dosing systems
- Temperature range: -170°C up to 1250/1400/1600/1800°C
- From vacuum up to 300 bar (on request)
GSA PT 1000
- Worlds only Gravimetric Sorption Anaylzer (GSA) including a DSC (Differential Scanning Calorimeter)
- Combined Gravimetric and Calorimetric Signal
- Selection of Vapor and Gas Dosing Accessories
- Temperature range: -196 up to 2400°C
- From Vacuum up to 150 bar
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Gravimetric sorption
In the fascinating realm of scientific exploration, one particular application stands out as a shining star—adsorption and desorption of various gases through materials like catalysts or porous structures. This intriguing phenomenon has earned its rightful place as a frequently requested study on thermal balances. It’s a captivating dance of molecules, and it unfolds in two distinct ways: volumetric and gravimetric sorption.
Volumetric sorption takes us on a journey where a precise amount of gas is introduced into a sample chamber. The ever-watchful change in pressure becomes our guide, unveiling the secrets of gas interactions with materials. On the other hand, gravimetric sorption beckons us to explore the alteration in mass of the sample as our path to enlightenment.
In Linseis’ remarkable thermal balance series, we wholeheartedly embrace the wonders of gravimetric sorption. Our journey is made possible by the presence of high-resolution load cells, guardians of precision that can detect even the most delicate of mass changes. With their watchful eye, we venture into the intricate terrain of adsorption and desorption, armed with a temperature range from the chilling -196°C to the blazing 2400°C, and a pressure range that spans from 0.01 mbar to 300 bar.
Areas of application:
- Gas sorption analysis
- Enthalpies of sorption (simultaneous TG/DSC sensor)
- Density determinations
- Gas storage
- Zeolites
- Catalysts
- In-situ gas analysis (FTIR, Raman, ELIF)
- Kinetic analysis
- Corrosive atmospheres – magnetic levitation balance
- Adsorption isotherm (BET Surface Analysis)
- TPD, TPO, TPR measurements (-196°C to 1800°C)
Gravimetric sorption reveals its brilliance in many ways. For those who seek a deeper understanding of the sorption process, our DSC measuring system can record the sorption enthalpy. This invaluable data provides insights that light up the path to comprehension.
The following devices can be used for gravimetric sorption analysis:
- GSA PT 10 ( STA PT 1600 )
- GSA PT 100 ( MSB )
- GSA PT 1000 ( STA HP )
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FTIR Coupling for GSA
All LINSEIS gravimetric sorption systems offer the option to integrate additional analytical tools, such as FTIR (Fourier-Transform Infrared Spectroscopy). In this specific experiment, the goal was to gasify charcoal in a CO2 environment. To achieve this, a carbon sample was introduced into the apparatus, and the temperature was gradually elevated while keeping the CO2 pressure constant. An interesting observation occurred during an isothermal phase at 1100°C, where a substantial loss of mass was recorded. This phenomenon is indicative of the gasification of the carbon, following the chemical equation C + CO2 → 2 CO.
A graphical representation illustrates the real-time FTIR measurements conducted while the coal was undergoing gasification in a TGA system. The conditions included a sample temperature of 1100°C, an atmosphere comprising pure CO2, with a gas flow rate of 20 ml/min at 273K, and a pressure of 0.013 bar.
During the main phase of mass loss, which lasted for 30 seconds, the IR spectrum clearly depicts the presence of CO and CO2 signals. This unambiguously confirms the release of carbon monoxide (CO) gas during the mass loss process.
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