High-Pressure Thermogravimetric Analyzer TGA HP3｜High Pressure TGA (up to 1200°C / 150 bar)
The TGA HP3 is an advanced High-Pressure Thermogravimetric Analysis (HP-TGA) platform, designed for thermal decomposition, adsorption/desorption, oxidation, and gasification studies under extreme conditions of up to 1200°C and 150 bar. It is especially suitable for high-pressure reaction mechanisms, material stability evaluation, and energy conversion research.
The system supports multiple TGA and TG-DSC sensors (thermocouple types E, K, S, B, and C) and can be integrated with a steam generator and high-pressure gas control modules. The modular MFC gas control system allows precise handling of inert gases, reactive gases, steam/water vapor, and high-pressure gas mixtures, meeting both research and industrial R&D requirements.
Key Features
- High-pressure & high-temperature capability: Up to 150 bar and 1200°C to simulate real process or extreme environments.
- High-sensitivity TGA measurement: Weight resolution down to 0.1 µg for precise thermal stability analysis.
- Multi-gas control: Supports 1–3 gases (expandable), with accurate mixing and switching via MFCs.
- Steam and condensable gas support: Compatible with steam generators, condensate traps, and heated transfer lines.
- EGA integration: FTIR, MS, and GC-MS can be connected for evolved gas analysis.
- Certified high-pressure safety design: Pressure vessel and gas panels comply with German high-pressure safety standards.
- Wide application range: Adsorption/desorption, coal gasification, hydrogenation reactions, biomass research, and petrochemical processes.
Technical Specifications
| Item | TGA HP3 |
|---|---|
| Temperature range | Room temperature to 1200°C |
| Maximum pressure | 150 bar |
| Sample weight | Up to 5 g |
| Resolution | 0.1 µg |
| Vacuum capability | 10E-4 mbar |
| TGA / TG-DSC sensors | Thermocouple types E / K / S / B / C |
| Gas control | 1, 2, or 3 gases (expandable) |
| Steam generator | Optional |
| Interface | USB or Ethernet |
Customized Gas Control (MFC System)
The TGA HP3 can be configured with multiple mass flow controllers (MFCs) to provide:
- Precise gas mixing and reaction gas control (N₂, O₂, CO₂, H₂, CH₄, etc.)
- Steam and condensable gas delivery with heated transfer lines
- High-pressure atmosphere switching from 10⁻⁴ mbar up to 150 bar
- High-pressure steam dosing and condensate collection
All gas panels are built to industrial safety standards and are fully integrated with software monitoring and alarm systems.
Application Examples
1) Decomposition behavior of calcium oxalate under high pressure (100 bar)
TG/DSC measurements under 100 bar static nitrogen still show three mass-loss steps for calcium oxalate, but the temperatures shift due to high pressure:
- The first step (dehydration) is delayed by pressure
- The second step (CO release) is almost pressure independent (irreversible reaction)
- The third step (CO₂ release) is delayed under high pressure and is reversible
2) Pressure effect on calcium oxalate decomposition (2 bar vs. 100 bar)
Under high pressure (100 bar):
- Dehydration (a) and CO₂ release (c) are shifted to higher temperatures
- CO release (b) occurs slightly earlier, as it does not depend on external pressure
3) Coal and biomass gasification studies
The TGA HP3 can simulate gasification reactions of charcoal, biomass, or coal at high temperature, such as:
- C + H₂O → CO + H₂
- C + O₂ → CO₂; C + CO₂ → 2CO
- CO + H₂O → CO₂ + H₂ (pressure-dependent equilibrium)
These studies are commonly applied to:
- Catalyst development
- CO removal technologies
- Biomass energy conversion (hydrogen and syngas production)
- Methanol and methane process analysis