| abstract |
The invention discloses a composite metal salt, catalyst and application based on phosphorus tailings. The composite metal salt is obtained through the following steps: dissolving sodium hydroxide into water to obtain an alkaline solution A; dispersing the soluble aluminum salt and the calcined product of phosphorus tailings into water, and mixing evenly to obtain a turbid solution B; The liquid B is mixed, and the stirring reaction and the hydrothermal reaction are carried out in sequence, and finally the composite metal salt based on phosphorus tailings is obtained. The catalyst prepared by the invention exhibits excellent physical and chemical properties, especially in the solvent-free aerobic oxidation of benzyl alcohol to form benzaldehyde, which exhibits ultra-high selectivity, and has excellent stability. The invention has the advantages of low raw material cost, simple preparation method, simple operation process, resource saving and environmental friendliness, which is beneficial to solve the environmental pollution caused by phosphorus tailings, improve the ecological environment, improve the utilization rate of resources, and realize the pollution-free comprehensive treatment of phosphorus tailings resources. And recycling, with huge economic, social and environmental benefits. |