| abstract |
The invention discloses an alkaline-earth metal-doped layered manganese dioxide VOCs catalyst, a preparation method and application thereof, and solves the problem that the manganese oxide catalyst in the prior art has complex crystal phase, complex preparation method and process, and is difficult to prepare a high-purity crystal form. The technical problems of δ-MnO 2 and δ-MnO 2 in the application of catalytic combustion to remove VOCs are limited. The catalyst includes δ-MnO 2 and alkaline earth metal elements doped in δ-MnO 2 . The preparation method includes the following steps: (1) obtaining a first solution, a second solution and a third solution, the first solution includes a manganese salt and a salt of an alkaline earth metal, the second solution includes an alkali and an oxidizing agent, and the third solution includes an alkali; ( 2) mixing the first solution and the second solution, then solid-liquid separation and washing to obtain a precipitation; (3) mixing the precipitation with the third solution, then performing a hydrothermal reaction, then solid-liquid separation and washing to obtain a precursor; (4) heat-treating the precursor to obtain an alkaline earth metal-doped layered manganese dioxide VOCs catalyst. |