the result shows that, the concentrated nitric acid and mix acid have a obvious effect to the chemical modification of carbon fiber surface.
结果表明:用浓硝酸或混酸对碳纤维表面改性的效果是显着。
an activated carbon of wood origin was treated by a diluted sulfuric acid solution of kmno_4 (ks), concentrated nitric acid (cn) and thermal oxidation at 350℃ (ht).
the use of 98% h2so4 for removal of water in nitric acid in the sulphuric acid process concentrated nitric acid production will produce large amount of dilute sulphuric acid, which has to be treated.
the said inorganic acid is one of the kinds such as concentrated sulfuric acid, concentrated nitric acid and concentrated chlorhydric acid.
所述无机酸是指浓硫酸、浓硝酸、浓盐酸中的任一种;
the structure retrofit of the oxidation furnace in a concentrated nitric acid plant increased the production capacity of the plant and obtained a good result.