• 专利标题:   Method for removing surfactant in nanocatalyst comprises e.g. dispersing powdered nanocatalyst with surfactant adsorbed on surface in aqueous solution, dropping hydrogen peroxide and iron aqueous solution, centrifuging and grinding.
  • 专利号:   CN112973801-A
  • 发明人:   WANG S, LI H, SUN G
  • 专利权人:   CAS DALIAN CHEM PHYSICAL INST
  • 国际专利分类:   B01J023/42, B01J023/44, B01J035/00, B01J037/00, B01J037/12
  • 专利详细信息:   CN112973801-A 18 Jun 2021 B01J-035/00 202159 Pages: 10 Chinese
  • 申请详细信息:   CN112973801-A CN11276430 12 Dec 2019
  • 优先权号:   CN11276430

▎ 摘  要

NOVELTY - Method for removing surfactant in nanocatalyst comprises (i) dispersing the powdered nanocatalyst with surfactant adsorbed on the surface in the aqueous solution, and ultrasonically dispersing uniformly; (ii) adjusting the pH of the nanocatalyst dispersion liquid to acidic with an aqueous inorganic acid solution; (iii) dropping hydrogen peroxide aqueous solution and iron aqueous solution to the above acidic solution; (iv) heating the reaction for 4-10 hours under stirring conditions; (v) cooling down, centrifuging, and removing the supernatant; (vi) washing the solid with hot water until the pH is neutral, drying in an oven, and grinding. USE - The method is useful for removing surfactant in nanocatalyst. ADVANTAGE - The method is simple and has mild reaction condition. The nano-catalyst has high catalytic activity.