ACHIEVE CHEM - Hydrothermal Synthesis Reactor

Hydrothermal Synthesis Reactor (PHR) has been widely used in chemical experiments as a hydrothermal synthesis reactor. Their hydrothermal synthesis reactor activities have been widely used in high temperature and high pressure. The following is a detailed description of the Hydrothermal Synthesis Reactor:

1) Basic overview

Definition: hydrothermal synthesis reactor is a small reactor commonly used in chemistry laboratories, which can be used for small doses of synthesis reactions, and achieve the purpose of rapid digestion of insoluble substances through strong acids or alkali in the tank and high temperature and high pressure closed environment.

Alias: high-pressure digestion tank, sample dissolver, pressure bomb, digestion tank, polytetrafluoroethylene high-pressure tank, etc.

Application: hydrothermal synthesis reactor has a wide range of application prospects in chemical synthesis research, which can be used for melting sample pretreatment of atomic absorption spectrum, as well as replacing platinum crucible to solve the problem of melting sample treatment for the analysis of trace elements in high purity alumina. In addition, it is often used for pretreatment digestion of heavy metals, agricultural residues, food, silt, rare earth, aquatic products, organic matter and other samples.

 

2) Structure composition

The structure of hydrothermal reactor usually includes an upper cover, a reactor, a magnetic stirrer, a heater, an intake valve, an exhaust valve, a pressure gauge, a temperature control device and other components. Among them, the reactor is the core part of the entire equipment, usually made of high pressure, corrosion resistant materials, such as stainless steel, titanium and so on. In addition, there are polytetrafluoroethylene (PTFE) or polytetrafluoroethylene (TFM) lined water autoclave reactors, which are mainly composed of an external high-quality stainless steel sheath and an internal Teflon liner or Teflon cavity.

 

3) The working principle

Hydrothermal synthesis reactor through high temperature and high pressure heating reaction, promote the reaction of the reaction material, improve the reaction rate and efficiency. Nanocrystals with very small particle size can be obtained by thermal decomposition, dissolution and compound decomposition of reactive substances under high temperature and high pressure in hydrothermal reactor.

 

4) Methods of use

The use of hydrothermal reactor is relatively simple, and the general experimental process is as follows:

The reaction mother liquor or suspension is added to the reactor.

Select the appropriate heating method and parameters and start heating.

When the reaction reaches a certain level, the heating is stopped.

After the reactor is cooled to room temperature, the reaction products are removed.

 

5) Precautions

When using hydrothermal synthesis reactor, the following points need to be noted:

Select the appropriate reactor volume and temperature pressure range.

Check the reactor before operation to ensure that it is in good condition.

During the heating process, exhaust and intake operations are required to maintain the air pressure inside the reactor.

After the operation is completed, it is necessary to clean the reactor in time to ensure the normal operation of the next use.

Avoid operating the autoclave without water, and do not add any extra weight to the autoclave.

The teflon reaction vessel should be properly cleaned before use to avoid contamination.

 

a. Definition and overview

Polytetrafluoroethylene hydrothermal reactor is a high temperature and high pressure reaction vessel composed of polytetrafluoroethylene (PTFE) inner liner and stainless steel jacket. PTFE lining not only provides a closed reaction space, but also has excellent corrosion resistance, can withstand strong acids, alkali and other corrosive chemicals, to meet the special conditions required for the synthesis of specific materials.

b. Structure and composition

Liner: Made of polytetrafluoroethylene (PTFE) material, it has excellent chemical stability and corrosion resistance, and can withstand high temperature and high pressure environment, while ensuring that the reactants will not react with the inner wall of the container.

Jacket: Usually made of high-quality stainless steel, it provides strong support and protection for the inner liner, while having good thermal conductivity to ensure even temperature distribution during the reaction.

Sealing device: Through the close coordination of the body and the cover to achieve sealing, to ensure that the high-pressure environment during the reaction process will not leak, while preventing external impurities from entering the reaction system.

c. The working principle

Polytetrafluoroethylene hydrothermal reactor works under certain temperature and pressure conditions, and uses high temperature and high pressure aqueous solution to dissolve or react with the dissolved products of the substance that are insoluble or insoluble under atmospheric conditions. By controlling the temperature difference of the solution, convection is generated, and then the supersaturated state is formed, so that the crystal precipitates and grows. This process can be used in the preparation of nanomaterials, compound synthesis, crystal growth and so on.

d.  Application field

Polytetrafluoroethylene hydrothermal reactor has a wide range of applications in a number of fields, including but not limited to:

New material synthesis: Used to synthesize a variety of new functional materials, such as nanomaterials, composite materials, etc.

Energy field: In the field of energy catalysis, fuel cells and other fields for the preparation of efficient catalysts and electrode materials.

Environmental science: for the treatment of environmental pollutants such as waste water and exhaust gas, as well as the pre-treatment and analysis of environmental samples.

Biomedical: Used in biomedical engineering for the preparation of biomedical materials, such as drug carriers, tissue engineering scaffolds, etc.

e. Use precautions

Feed control: When the reactants are poured into the teflon bushings, the feed factor should be ensured to be less than 80% to leave enough space for the reactants to expand and gas generation.

Seal inspection: When assembling the reactor, ensure that the gasket under the reactor body is located correctly and sealed well to prevent leakage during the reaction process.

Temperature and pressure control: In the process of heating and pressure boost, the operation should be strictly in accordance with the specified heating rate and pressure range to avoid exceeding the bearing capacity of the equipment.

Safe operation: Appropriate protective equipment should be worn during operation, such as protective glasses, lab clothes, etc., to prevent accidents.

Cleaning and maintenance: The reactor should be cleaned in time after the reaction, especially the lining and seal should be thoroughly cleaned to prevent corrosion and damage.

 

 

Here is the requirements from Netherlands customer, blue font is a detailed description:

 

1. The height and diameter of the vessel.

    Ф88×187mm.

 

2. we are not sure if it fits yet can you provide the also the diameter and height of the 100ml vessel

Dimensions of 100ml:
    Ф77.2×159mm; Gross weight: 2.7KG.