【摘要】 采用柠檬酸法测定了均匀沉淀法制备出的纳米氧化镁粉体活性,并与普通氧化镁粉体活性进行了比较。探讨了煅烧温度和煅烧时间对纳米氧化镁粉体活性的影响。结果表明,煅烧温度和煅烧时间对纳米氧化镁粉体活性的影响很大,煅烧温度为450℃和煅烧时间为3 h得到的纳米氧化镁粉体活性较大。普通氧化镁粉体的活性要低于纳米氧化镁粉体的活性。更多还原

【Abstract】 The nanoparticles of magnesium oxide are prepared by homogeneous precipitating method and their activity is measured by the citric acid method.The effect of calcining temperature and calcining time on activity of nanoparticles of MgO is investigated.Comparison of activity of different kinds of powders of MgO is made.The results show that the calcining temperature and the calcining time influence significantly the activity of nanoparticles of MgO.It is also reveals that the optimum calcining temperature and the calcining time are about 450 ℃ and 3 h,and the activity of nanoparticles of MgO is higher than commercial powders of MgO.更多还原