Teflon lined autoclave, also known as a hydrothermal synthesis reactor, is a high-pressure vessel used for chemical reactions under high temperature and pressure conditions. It consists of a stainless-steel outer shell and a Teflon (PTFE) inner liner, which provides excellent corrosion resistance and chemical stability. This design allows the autoclave to handle strong acids, alkalis, and organic solvents safely.

Working Principle of Teflon Autoclave

The Teflon lined autoclave operates on the principle of hydrothermal synthesis. The sample solution is sealed inside the Teflon liner, which is placed in the stainless-steel vessel. When heated in an oven, the internal temperature and pressure rise, enabling crystallization, nanoparticle synthesis, and chemical reactions that cannot occur under normal conditions. The PTFE liner prevents contamination and ensures a high-purity reaction environment.

Key Features and Advantages

• High Corrosion Resistance – Teflon liner is inert to most chemicals, acids, and alkalis.
• High Temperature Resistance – Typically used within 220–280°C (depending on model).
• Excellent Sealing Performance – Prevents leakage and maintains stable internal pressure.
• Easy Cleaning & Maintenance – Smooth PTFE surface minimizes residue buildup.
• Safe and Reliable Design – Double-layer structure ensures operator safety.

Applications of Teflon Lined Autoclave

Teflon autoclaves are widely used in scientific research, material development, and chemical analysis. Common application areas include:

• Hydrothermal synthesis of crystals and nanoparticles
• Material science experiments (e.g., zeolite, perovskite, graphene oxide)
• Chemical synthesis and catalyst preparation
• Geochemical and mineral research
• Pharmaceutical and laboratory testing

How to Use a Teflon Autoclave

1. Place the sample and solution into the Teflon liner.
2. Tighten the stainless-steel shell with the sealing ring.
3. Heat the autoclave in an oven or furnace to the desired temperature.
4. After the reaction, cool the autoclave naturally before opening.
5. Remove the liner carefully and collect the sample.

Teflon autoclave Technical parameters