Hebei Messi Biology Co., Ltd. stated that nano magnesium oxide (MgO) is a new type of high-functional fine inorganic material. Due to its fine particles, it has special functions such as heat, light, electricity, mechanics and chemistry that are different from the bulk material. Since nano magnesium oxide is an alkaline oxide, it has a wide range of uses in the field of catalysis. It can be used as an auxiliary agent to adjust the acidity and alkalinity of the catalyst, or as an alkaline catalyst to directly catalyze certain reactions. Therefore, the study of the surface structure and catalytic properties of magnesium oxide has attracted widespread attention.
Since nano magnesium oxide itself has high surface reactivity, especially strong surface alkalinity, by increasing the specific surface area of magnesium oxide, it can have better catalytic and adsorption properties. The synthesis of nano magnesium oxide mainly includes precipitation method, sol-gel method, metal alkoxide method and solid phase method.
In this study, magnesium chloride and precipitant were used as raw materials, and magnesium oxide powder was prepared by precipitation method, and the effect of preparation conditions on the specific surface area of the product magnesium oxide powder was investigated. With magnesium chloride as the reaction raw material, sodium carbonate as the precipitant, and the addition of surfactant polyethylene glycol, under the conditions of reactant concentration 1.0 mol/L, reaction temperature 30°C, reaction system pH value 9.8~10, and roasting temperature 500°C, the prepared magnesium oxide powder has a large specific surface area. The preparation of magnesium oxide powder by precipitation method is simple and easy, and has good industrial prospects.