Year1
- 工作温度：
- ≤220℃
- 工作压力：
- ≤3MPa
Also known as sample dissolver, hydrothermal synthesis reactor, high-pressure digestion tank, digestion tank, PTFE high-pressure tank, pressure digestion tank, PTFE sealed sample dissolution The tank is a closed container used to dissolve insoluble substances. It is used for sample pretreatment in small-dose synthesis reactions and analysis such as atomic absorption spectroscopy and plasma emission. Therefore, it is widely used in research in the fields of petrochemical industry, biomedicine, materials science, geochemistry, environmental science, CDC, food science, commodity inspection and other fields. The hydrothermal method refers to the material synthesis in which the reaction raw materials are uniformly dispersed in water, the liquid phase formed is put into a sealed container, and then the container is heated to dissolve and recrystallize substances with poor solubility at normal temperatures and pressures. and special methods of processing. The basic types of reactions for hydrothermal synthesis of nanomaterials mainly include hydrothermal oxidation, hydrothermal reduction, hydrothermal decomposition, hydrothermal precipitation, hydrothermal synthesis, hydrothermal dehydration, and hydrothermal single crystal growth.
Technical parameters of water heating kettle:
, working temperature: ℃
, working pressure:
, heating and cooling rate: ℃/
, volume:,,,,
Pour the reactants into the PTFE bushing or para-polystyrene bushing and ensure that the feeding coefficient is less than.
Make sure the gasket under the kettle body is in the correct position (with the convex side facing down) and then put in the polytetrafluoro bushing or the counter-position polystyrene bushing and the upper gasket. First, tighten the kettle lid and then use the screw to twist the kettle lid. Tighten until tightened.
Place the hydration synthesis reaction kettle in the heater and heat it up to the required reaction temperature according to the specified heating rate. (Less than the specified safe operating temperature).
After confirming that the intra-abdominal temperature is lower than the boiling point of the reactant and solvent, the kettle lid can be opened for subsequent operations. When the reaction is completed and the temperature is cooled down, the specified cooling rate must be strictly followed to facilitate safety and the service life of the reactor.
After confirming that the temperature inside the abdomen is lower than the boiling point of the reactant and solvent, first use the screw to loosen the lid of the kettle and then open the lid of the kettle.
The hydrothermal synthesis reaction kettle must be cleaned in time after each use to avoid rust.
In high temperature, high pressure and closed environments, the dielectric constant, viscosity, density and surface tension of water will decrease, and the chestnut volume and diffusion coefficient will increase. Due to the formation of water vapor, the pressure of the reaction environment increases, which usually cannot be maintained at normal temperature. Reactions that occur under normal pressure or reactions with a slow reaction rate can be realized. The water used in the reaction can not only serve as a solvent but also participate in the reaction. Due to changes in the physical properties of water, it can transmit pressure, accelerate osmotic reactions and control the reaction process to achieve material synthesis.
Currently. Hydrothermal methods can be used to achieve controllable synthesis of single-component and multi-component composite nanocrystals. The nanocrystalline grains synthesized by the hydrothermal method have uniform dispersion and size distribution. Composite materials with a certain stoichiometric composition can also be synthesized according to the proportion of raw materials added.
, good corrosion resistance, no spillage of harmful substances, reducing pollution and safe to use.
It has a polytetrafluoroethylene bushing with double-layer care and can withstand acid and alkali.
Special specifications can be customized according to drawings and samples.
Contact person: Tan Gong
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