Violet tungsten oxide is an important dingal material for obtaining energy efficient building glass. With the promotion of violet tungsten oxide application in the field of thermal insulation, beginners may be concerned about the raw material W18O49 nano powder. For example, how to measure the specific surface area, pore size distribution and adsorption-desorption curve of W18O49 nano particles?
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First, the W18O49 nanopowder was dried at 120°C for 24h, and an appropriate amount of W18O49 nanospheres were weighed on a balance and placed in a test glass container. And then the glass container was placed in an apparatus and evacuated at 80°C for draining the impurities and gas in the pores of the nano powder. After degassing for 8 hours, adjust the parameters and place the sample to be tested in the test position. The specific surface area, pore size distribution and adsorption-desorption curve of W18O49 nano particles were measured by testing in a container in which liquid nitrogen is passed under ultra-low temperature conditions,
