In situ medium and low temperature accessories are experimental equipment accessory used for material analysis, mainly used for in-situ testing in low or medium low temperature environments. Combined with vacuum environment, temperature control, and special window material design, it is widely used in fields such as chemistry, materials science, and catalytic research.

1. Core functions and technical parameters of in-situ medium and low temperature accessories

(1) Temperature range and control accuracy

Supports a temperature range of -196 ℃ to 500 ℃ in a vacuum environment (such as liquid nitrogen refrigeration), with a temperature control accuracy of ± 0.5 ℃. Some models can cover temperatures from -150 ° C to 600 ° C, suitable for a wider range of experimental needs.

(2) Refrigeration method and cooling system

Using liquid nitrogen refrigeration, with a liquid nitrogen consumption of less than 4L/h, and maintaining a stable temperature through a deionized water circulation cooling system. Optional low-temperature liquid nitrogen cooling system (such as Cryostream series).

(3) Window Materials and Structural Design

The window material is mostly polyester film (such as TD series), and some infrared configurations use KBr or SiO2 windows.

The structure includes a high-pressure resistant design (such as 133kPa) and is equipped with multiple gas inlets/outlets, suitable for in-situ reactions or atmosphere control.

2. Application fields of in-situ medium and low temperature accessories

(1) Material research

Used for in-situ testing of X-ray diffractometers (such as TD-3500) to study changes in crystal structure and phase transition processes at low temperatures. Support research on heterogeneous catalysis, gas-solid interactions, photochemical reactions, etc.

(2) Electrochemical and Battery Research

It can be extended to in-situ battery accessories to test composites in electrochemical systems (such as carbon, oxygen, nitrogen, sulfur, etc.), with a temperature resistance of up to 400 ℃.

(3) Industry Applications

The products of Dandong Tongda Technology (TD series) have been applied in the fields of chemistry, chemical engineering, geology, metallurgy, etc., and exported to countries such as the United States and Azerbaijan.

3. Typical products and brands of in-situ medium and low temperature accessories

Dandong Tongda Technology (TD Series)

The accessories for X-ray diffractometers such as TD-3500 and TD-3700 emphasize high-precision temperature control (± 0.5 ℃) and efficient liquid nitrogen refrigeration. Suitable for diffuse reflectance spectroscopy measurement, providing stainless steel reaction chamber, multi window configuration (FTIR or UV Vis compatible), supporting high vacuum to 133kPa environment.

Overall, in situ medium and low temperature accessories have become an important tool for material in situ analysis through precise temperature control, vacuum environment, and window design adapted to different instruments. They play an irreplaceable role in the study of low-temperature crystal structures and exploration of catalytic reaction mechanisms.