Rare earth specific surface area test

According to the structure and physical and chemical properties of the electronic layer of rare earth elements, as well as their symbiosis in minerals and different ionic radii, different properties can be produced. Seventeen rare earth elements are usually divided into two groups:

Light rare earths include: lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, and gadolinium.

Heavy rare earths include: terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium, scandium.
The specific surface area of ​​rare earth is a very important parameter. The specific surface area is the surface area per gram of solid material in m2 / g; the national standard for the measurement of specific surface area is the low-temperature nitrogen adsorption BET multi-point method based on the BET theory (GB / T 19587-2004). The main points of measuring the specific surface area by the nitrogen adsorption BET multipoint method are: in the range of 5-30% nitrogen partial pressure, the amount of nitrogen adsorbed by the adsorbent (powder to be measured) is measured at different nitrogen partial pressure points to make adsorption For the isotherm, the saturated adsorption amount of the monolayer corresponding to the surface of the adsorbent when the monolayer is covered with nitrogen molecules is calculated by the BET formula, and the specific surface area of ​​the adsorbent can be calculated. The 3H-2000 series specific surface analyzer is a high-precision analytical instrument based on the national specific surface test standard. It has 7 domestic leading technologies; such as the only integrated in-situ purge processing function in China, which is designed for chromatographic specific surface testing. The problem of purging treatment between different nitrogen partial pressure points makes the purging treatment between different nitrogen partial pressure points more convenient and efficient, and reduces the impact of continuous testing on accuracy; the only program-controlled wind and heat removal device in China, After achieving full automation, it can ensure sharp and fast desorption peaks and reduce background errors; the only chromatographic concentration detection system in China, which can increase the detection accuracy of nitrogen partial pressure by 10 times relative to the flow method; the six-way valve sampler program control, The only domestic quantitative control program switching function; the only domestic particle size report function; while the instrument parameter software is displayed, the large-screen LCD hardware display on the instrument makes the instrument's working status parameters clear and the operation is more reliable; and liquid nitrogen temperature monitoring, Detector gas protection, detector constant temperature device, and sound prompts for important links make 3H-2000 series specific surface area Given instrument in accuracy and stable security, ease of operation and other aspects beyond the reach and partially similar instrument performance abroad, 3H-2000 series has a large number of customers in the country specific surface area tester, surface area instrument for the well-known brands.
Application areas:
Battery materials: graphite, lithium iron phosphate, lithium cobaltate, lithium manganate, lithium nickel cobaltate, cobalt oxide, lithium titanate, ternary materials, battery materials, lithium manganese materials, magnesium manganese materials, carbon materials, nickel hydrogen materials , Nickel-cadmium materials, diaphragms; electrolytic manganese dioxide, graphite powder, nickel hydroxide, nickel foam, modified graphite materials, cathode materials, anode materials;
Ceramic raw materials: alumina, zirconia, silicate, aluminum nitride, silica, yttrium oxide, silicon nitride, quartz, silicon carbide;
Metal oxides: alumina, zinc oxide, calcium oxide, sodium oxide, magnesium oxide, barium oxide, iron oxide, copper oxide, titanium oxide, titanium dioxide, titanium dioxide, zirconium oxide, yttrium oxide, metal oxides;
Environmental protection industry: pigments, inorganic pigments, calcium carbonate, silica, mineral powder, sediments, suspended solids;
Metal materials: silver powder, iron powder, copper powder, tungsten powder, nickel powder, aluminum powder, cobalt powder;

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