摘要: 按反应物的状态，纳米氧化镁的制备方法可分为固相法、气相法和液相法，分别评述了这些制备方法的优点和不足，介绍了纳米材料团聚程度的表征方法，从影响团聚的因素如反应原料、反应条件、脱水及干燥方式、烧条件和分散剂的选用等方面，较详细地讨论了纳米氧化镁粉体制备过程应采取的防团聚措施，提出了纳米氧化镁材料研究的几点建议。

关键词:纳米材料;氧化镁;团聚

Abstract: According to the state of reactants , the preparation methods ofnano-structured magnesia are classified into solid-phase method, gas-phasemethod and liquid-phase method , the benefits and disadvantages of everymethod are briefly appraised. The characterizing methods for the degree ofagglomeration on nano-particles are introduced , started with influence factorsof agglomeration, such as raw materials , reaction conditions , drying meth-ods , calcination conditions and selection of dispersants. The measures whichshould be taken for solving of agglomeration in the process of nano-magnesiapreparation are discussed in detail. Some advices on the research ofnano-structured magnesia are given.

Keywords:nanometer materials ;magnesia; agglomeration