| 摘要 |
PURPOSE:To prevent corrosion of a structural material by adding PO<2->4 to CO absorbing liquid wherein CuCl is dissoved in hexamethylphosphoramide. CONSTITUTION:0.01-0.5mol/l PO<20>4 is added to CO absorbing liquid wherein CuCl is dissolved in hexamethylphosphoramide. PO<2->4 and HCl or Cl<-> perform competitive adsorbing action for a metallic material and thereby PO<2->4 is adsorbed on the surface of metal and corrosion of metallic material due to HCl and Cl<-> is prevented. When amount of PO<2->4 to be added is more than 0.5mol/l, absorbing liquid is flocculated in a jellylike state by heating and therefore >=0.5mol/l amount to be added is unreasonable. |
