Sorbitol as raw material, through dehydration closed loop formation of sorbitol, and then with palmitic acid esterification reaction prepared. About Sorbitan monopalmitate: Sorbitol as raw material, through dehydration closed loop formation
As an important industrial material, chromium diboride powder has been widely used in many fields. With the progress of science and technology and the change in market demand, the development of the chromium diboride powder industry is also constantly changing. This paper will analyze the status quo of the chromium diboride powder industry and forecast its future development prospects.
High Purity Hafnium Nitride HfN Powder refers to high-purity Hafnium nitride powder. Hafnium nitride is a gray powder with a cubic crystal structure, a melting point of up to 3310 ℃, and a microhardness of 16GPa. It is quite stable but easily corrupted by aqua regia, concentrated sulfuric acid, and hydrofluoric acid. This powder is generated by the direct reaction of hafnium and nitrogen at 900 ℃, or by the reaction of hafnium halides with ammonia or a mixture of nitrogen and hydrogen gas. It has the characteristics of high purity, small particle size, uniform distribution, large specific surface area, and high surface activity.
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