Abstract: A new technology of producing magnesium peroxide with magnesium chloride,hydrogen peroxide,and ammonia as main raw materials was studied.By investigating the effects of reactants adding order,amount-of-substance ratio of reactants,reaction time,stabilizer type，and its adding amount etc.,suitable conditions for the preparation of magnesium peroxide were obtained,i.e.magnesium chloride and hydrogen peroxide were mixed firstly,and then ammonia was added,reaction time was 4 h,Na₂HPO₄ or HEDP were used as stabilizers,and n(MgCl₂)∶n(H₂O₂)∶n(NH₃•H₂O)＝1∶1∶2.5.XRD,FT-IR,SEM,and particle size distribution methods were used to characterize the products.Results showed that under suitable conditions,the mass fraction of magnesium peroxide could reach more than 40%,the products were thermally stable below 320 ℃.The products were not fully crystallized with irregular shapes.The product particles have a relatively wide size distribution range,with a median diameter of 17.62 μm. 

Key words: magnesium peroxide, non-emulsification method, hydrogen peroxide, ammonia