| abstract |
The invention discloses a preparation method of a composite manganese-based low-temperature anti-sulfur denitration catalyst, which comprises the following steps: Step S001. Prepare liquid A: weighing carbon nanotubes, absolute ethanol, and ultrasonically treating; rapidly adding isopropyl titanate , continue ultrasonic treatment; Step S002. Prepare B liquid: measure acetic acid, absolute ethanol, distilled water, stir the mixture and add dropwise to the mixture of manganese acetate, cobalt nitrate hexahydrate and cerium nitrate hexahydrate, continue stirring until The solid is completely dissolved; Step S003. Prepare MnO 2 ‑CoO‑CeO 2 /TiO 2 ‑CNTs catalyst: slowly drop the B solution into the A solution, ultrasonically treat it after the dropwise addition, and age at room temperature to form a gel; The gel is dried and then calcined to obtain a catalyst; by adopting a sol-gel method, TiO 2 and CNTs are used as catalyst carriers, manganese oxide is used as an active component, and cobalt and cerium metal additives are doped to modify the catalyst, thereby improving the performance of the catalyst. Catalytic activity, sulfur resistance and service life of manganese-based catalysts at low temperature. |