Name: Hydrothermal Synthesis Reactor
Outer Shell Material: Stainless steel (SS-304)
Inner Shell Material: PTFE(Teflon) / PPL
Volume: 25/50/100/200/500/1000mL (customize size available)
Heating and Cooling Rate: ≤5°C/min
Working Pressure: 5Mpa / 10Mpa
The Hydrothermal Synthesis Reactor, also known as a high-pressure digestion vessel, pressure digestion capsule, hydrothermal reactor, digestion capsule, or PTFE high-pressure vessel, is designed for laboratory hydrothermal synthesis, digestion, and chemical reactions under controlled high-temperature and high-pressure conditions.
The reactor consists of a high-quality 304 stainless steel outer body and an inner PTFE or PPL liner, providing reliable pressure resistance and excellent chemical compatibility. By creating a sealed high-temperature and high-pressure environment, it enables the treatment, dissolution, and synthesis of materials that are difficult to process under conventional conditions.
With available volumes from 25 mL to 1000 mL and working pressure options of 5 MPa and 10 MPa, the hydrothermal synthesis reactor is suitable for a wide range of laboratory research and material preparation applications.
| Parameter | Specification |
| Outer Body Material | 304 Stainless Steel |
| Inner Liner Material | PTFE / PPL |
| Available Volume | 25 mL, 50 mL, 100 mL, 200 mL, 500 mL, 1000 mL |
| Working Pressure | 5 MPa / 10 MPa |
| Maximum Operating Temperature – PTFE Liner | ≤ 240 °C |
| Recommended Safe Operating Temperature – PTFE Liner | 200 °C |
| Maximum Operating Temperature – PPL Liner | ≤ 280 °C |
| Recommended Safe Operating Temperature – PPL Liner | 260 °C |
| Heating/Cooling Rate | ≤ 5 °C/min |
| Main Components | Reactor Body, Reactor Lid, Bottom Pad, Top Pad, Liner, Liner Lid |
Hydrothermal synthesis reactors are widely used in laboratory research and sample preparation, including:
1. Prepare the reactor
Place the hydrothermal reactor on a clean and stable surface. Turn the stainless-steel rod counterclockwise and rotate the threaded stainless-steel main cap counterclockwise to open the reactor.
2. Remove the liner
Remove the stainless-steel top disc and take out the PTFE or PPL liner.
3. Add the reaction solution
Add the required solvent and reaction materials into the liner according to the experimental procedure. Do not exceed the recommended filling level.
4. Assemble the reactor
Place the liner back into the stainless-steel outer body, position the top disc correctly, and close the main cover.
5. Tighten the reactor
Use the stainless-steel rod to fully tighten the reactor according to the manufacturer’s operating instructions.
6. Carry out the reaction
Place the assembled reactor into a suitable oven or heating system and conduct the hydrothermal reaction under the specified temperature and pressure conditions.
7. Cool before opening
After the reaction, allow the reactor to cool sufficiently before opening it. Do not attempt to open the reactor while it is still hot or pressurized.
Before operating the hydrothermal autoclave reactor, carefully review the solvent properties, reaction conditions, and allowable pressure and temperature limits.
1. Check solvent vapor pressure
Before use, determine the saturated vapor pressure of the solvent at the intended reaction temperature. The expected pressure must remain within the reactor’s maximum allowable pressure.
2. Avoid excessive tightening of the PTFE liner
PTFE has a certain degree of compressibility under high-temperature and high-pressure conditions. During first-time use, avoid excessive tightening of the reactor lid or top tightening screws, as thermal expansion and extrusion may cause deformation of the liner.
3. Clean the liner before use
Thoroughly clean the PTFE reaction vessel before each experiment to reduce the risk of cross-contamination and maintain sample purity.
4. Lubricate the threads when required
When the operating temperature exceeds 150 °C, a suitable layer of high-temperature lithium-based grease is recommended on the threads before tightening the reactor lid. This helps reduce thread galling of stainless steel at elevated temperatures. For models with a silver-plated reactor lid, additional lubrication is not required.
5. Do not use unsuitable solvents or reaction systems
The hydrothermal reactor should not be used under the following conditions:
6. Allow sufficient cooling before opening
Always ensure that the reactor has cooled and internal pressure has been safely released before opening the vessel.
7. Follow the specified operating limits
Do not exceed the rated pressure, recommended operating temperature, or other specifications of the selected reactor model.
Our hydrothermal synthesis reactors are designed for high-temperature and high-pressure laboratory applications, combining a pressure-resistant stainless-steel body with a chemically resistant PTFE or PPL liner.
A hydrothermal synthesis reactor is used to conduct chemical reactions, material synthesis, and sample digestion under controlled high-temperature and high-pressure conditions. It is particularly useful for reactions that require a sealed environment or cannot be efficiently carried out at atmospheric pressure.
PTFE offers excellent chemical resistance and is suitable for a wide range of chemical reactions. PPL provides higher temperature resistance and can be used at temperatures up to 280 °C, depending on the specific reactor configuration and operating conditions.
Available reactor volumes include 25 mL, 50 mL, 100 mL, 200 mL, 500 mL, and 1000 mL.
Depending on the model, the working pressure is available at 5 MPa or 10 MPa.
The PTFE liner provides excellent chemical resistance and can be used with many strong-acid and strong-base systems. However, compatibility should always be evaluated based on the specific chemical, concentration, temperature, pressure, and reaction conditions.
No. The reactor should not be used for reactions that generate a large amount of gas, because gas generation can cause rapid pressure increases and create a significant safety risk.
Before operation, check the condition of the reactor body, liner, lid, sealing components, and threads. Confirm that the reaction temperature and expected pressure are within the specified operating limits and that the selected solvent and reaction system are suitable for the reactor.
VI HALBLEITERMATERIAL GmbH (VIMATERIAL) employs a stringent quality assurance system to ensure the reliability of our product quality. Strict quality control is implemented throughout the entire production chain, and for defective products, we strictly enforce the principle of rework and redo. Each batch is released only after passing detailed specification tests.
Every batch of our materials is independently tested, and, if necessary, we send samples to certified companies for testing. We provide these documents and analysis certificates with the shipment to certify that our products meet the required standards.
Contact our team of experts today and let us help you with your business!
