|Feature||Surface DX||Surface DA|
|Test principle||Low temperature nitrogen adsorption, dynamic method|
|Distinction||Adventurous adsorption technique||Traditional desorption technique|
|Recording adsorption data, same as static volumetric method. Separate analysis stations are suitable for testing sample with low surface area (< 10 m2/g).||Recording desorption data, analysis stations are not mutual independence but parallel. It is not suitable for accurately measure sample with low surface area (less than 10 m2/g) illustrated by gentle peak.|
|Test Method||Reference method;||Reference method;
Single point BET; Multi-point BET.
|Adsorbate and Carrier Gas||High purity nitrogen (99.999%);
High purity helium (99.999%).
|Range of P/P0||0.3 (Reference method)|
|Range of BET Surface Area||0.01 m2/g to the infinity; (It is not suitable for detecting micropore materials).|
|Repeatability||Typically better than ±1.0% (carbon black)||Typically better than ±1.5% (carbon black)|
|Efficiency||5 min per sample (reference method);
25 min per sample (multi-point BET)
|9 min per sample (reference method);
30 min per sample (multi-point BET)
|Overall Dimension||Depth: 610 mm; Width: 460 mm; Height: 680 mm; Weight: 48 kg.|
|Ambient Temperature||15-40 oC|
|Electrical Supply||AC220V±20V, 50-60 Hz, maximum power300 W;|
|Applied Field||Typical Materials||Details|
|Material Research||ceramic powder, metal powder, nanotube||According to surface area value of nanotube,
hydrogen storage capacity can be predicted.
|Chemical Engineering||carbon black, amorphous silica, zinc oxide, titanium dioxide||Surface area of carbon black is one of the important factors affecting the reinforcement performance of rubber products.|
|New Energy||lithium cobalt, lithium manganate||Increasing surface area of electrode can improve Electrochemical reaction rate and promote iron exchange in negative electrode.|
|Catalytic Technologies||active alumina oxide, molecular sieve, zeolite||Active surface area and pore structure influence reaction rate.|